Pub Date : 2025-06-01Epub Date: 2025-03-16DOI: 10.1016/j.aeolia.2025.100970
Yan Liu , Jia Jia , Lai Zhao , Yixiao Zhang , Junhuai Yang , Zhenhao Zhu , Yijiao Fan , Ziwei Tao , Zhenyuan Yao
Dust deposited in high-altitude snow is often exceptionally well-preserved, making high-altitude snow deposits an excellent medium for studying dust fluxes. We investigated the magnetic characteristics of snow dust at high altitudes in the Tianshan Mountains and then determined its potential source areas. Our results indicated the following: 1) The magnetic mineralogy of snow dust at high altitudes in the Tianshan Mountains is mainly magnetite with a minor amount of hematite. 2) There is a significant pollution contribution to the high-altitude snow in the Tianshan Mountains, as well as a natural contribution from surface sediments in the Yili Basin. 3) Composite fingerprint factor analysis showed that the relative contribution of anthropogenic pollution to snow dust in the Tianshan Mountains is about 6–42 %. Our results also indicate that the dust release capacity of sedimentary environments in the Yili Basin can be ordered as: desert > fluvial sediments > loess > alluvial fan.
{"title":"Magnetic characteristics and source analysis of modern snow dust from the Tianshan Mountains","authors":"Yan Liu , Jia Jia , Lai Zhao , Yixiao Zhang , Junhuai Yang , Zhenhao Zhu , Yijiao Fan , Ziwei Tao , Zhenyuan Yao","doi":"10.1016/j.aeolia.2025.100970","DOIUrl":"10.1016/j.aeolia.2025.100970","url":null,"abstract":"<div><div>Dust deposited in high-altitude snow is often exceptionally well-preserved, making high-altitude snow deposits an excellent medium for studying dust fluxes. We investigated the magnetic characteristics of snow dust at high altitudes in the Tianshan Mountains and then determined its potential source areas. Our results indicated the following: 1) The magnetic mineralogy of snow dust at high altitudes in the Tianshan Mountains is mainly magnetite with a minor amount of hematite. 2) There is a significant pollution contribution to the high-altitude snow in the Tianshan Mountains, as well as a natural contribution from surface sediments in the Yili Basin. 3) Composite fingerprint factor analysis showed that the relative contribution of anthropogenic pollution to snow dust in the Tianshan Mountains is about 6–42 %. Our results also indicate that the dust release capacity of sedimentary environments in the Yili Basin can be ordered as: desert > fluvial sediments > loess > alluvial fan.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100970"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-04-24DOI: 10.1016/j.aeolia.2025.100975
Hesam Salmabadi , Mohsen Saeedi , Michael Notaro , Alexandre Roy
The Mesopotamian Marshes, located in southern Iraq and southwestern Iran, represent one of the world’s largest wetland ecosystems. These marshlands have undergone significant degradation primarily due to anthropogenic activities, including extensive dam construction, oil extraction, and political conflicts, transforming vast areas into potential dust sources. This study investigates the wind climatology over the marshes and analyzes the long-range transport pathways of dust originating from the region using forward air-parcel trajectories generated with the HYSPLIT model from 2000 to 2023, with each trajectory calculated over an 8-day period. Through trajectory clustering, we identified four primary transport pathways with distinct seasonal patterns. The dominant pathway (35%) follows the Shamal winds southeastward across the Persian Gulf, particularly active in summer and spring. A second pathway (35%) curves southwestward toward Africa, while a third (19%) moves northeastward toward the Caspian Sea and Kazakhstan during non-summer seasons. The fourth pathway (11%) represents high-altitude transport via mid-tropospheric westerlies, potentially reaching East Asia. Meteorological analysis suggests that dust emission potential is active year-round and is highest during summer. Summer is characterized by high temperatures (seasonal mean of ), no precipitation, and the highest seasonal mean wind speeds (). These findings provide crucial insights into the spatial extent and seasonal variability of dust transport from the Mesopotamian Marshes, demonstrating their far-reaching impact on air quality, ecosystems, and climate in regions as distant as East Asia and North Africa, highlighting the need for targeted conservation to mitigate environmental impacts posed by dust from these degraded wetlands.
{"title":"Dust transport pathways from the Mesopotamian Marshes","authors":"Hesam Salmabadi , Mohsen Saeedi , Michael Notaro , Alexandre Roy","doi":"10.1016/j.aeolia.2025.100975","DOIUrl":"10.1016/j.aeolia.2025.100975","url":null,"abstract":"<div><div>The Mesopotamian Marshes, located in southern Iraq and southwestern Iran, represent one of the world’s largest wetland ecosystems. These marshlands have undergone significant degradation primarily due to anthropogenic activities, including extensive dam construction, oil extraction, and political conflicts, transforming vast areas into potential dust sources. This study investigates the wind climatology over the marshes and analyzes the long-range transport pathways of dust originating from the region using forward air-parcel trajectories generated with the HYSPLIT model from 2000 to 2023, with each trajectory calculated over an 8-day period. Through trajectory clustering, we identified four primary transport pathways with distinct seasonal patterns. The dominant pathway (35%) follows the Shamal winds southeastward across the Persian Gulf, particularly active in summer and spring. A second pathway (35%) curves southwestward toward Africa, while a third (19%) moves northeastward toward the Caspian Sea and Kazakhstan during non-summer seasons. The fourth pathway (11%) represents high-altitude transport via mid-tropospheric westerlies, potentially reaching East Asia. Meteorological analysis suggests that dust emission potential is active year-round and is highest during summer. Summer is characterized by high temperatures (seasonal mean of <span><math><mrow><mn>38</mn><mo>.</mo><mn>8</mn><msup><mrow><mspace></mspace></mrow><mrow><mo>∘</mo></mrow></msup><mi>C</mi></mrow></math></span>), no precipitation, and the highest seasonal mean wind speeds (<span><math><mrow><mn>5</mn><mo>.</mo><mn>31</mn><mspace></mspace><mi>m</mi><msup><mrow><mi>s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span>). These findings provide crucial insights into the spatial extent and seasonal variability of dust transport from the Mesopotamian Marshes, demonstrating their far-reaching impact on air quality, ecosystems, and climate in regions as distant as East Asia and North Africa, highlighting the need for targeted conservation to mitigate environmental impacts posed by dust from these degraded wetlands.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100975"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-03-29DOI: 10.1016/j.aeolia.2025.100972
Abbas Miri
The air quality index (AQI), PM10 and PM2.5 reflect the level of air pollution and are used to assess the risk level of dust-related diseases and hospitalization. Previous studies have assessed the hospital admissions in relation to individual (e.g., PM10) or multiple air pollutants (AQI, PM10, and PM2.5) to examine the efficacy of these indices in reflecting health risks. This study examined the efficacy of air pollutants (AQI, PM10, and PM2.5) and dust storm indices (wind speed, visibility and dust storm index (DSI)) in reflecting health risks. Hospital admissions for respiratory, eye, and cardiovascular diseases were received from the Zabol Medical Emergency Center during 13 dust storm events in 2022 and 20 events in 2023. PM2.5 and PM10 were gathered from the Zabol University of Medical Sciences, and visibility and wind speed were collected from the Zabol meteorological station from May 2022 to Dec 2023. The results revealed AQI > 100 and an increase in hospital admissions with increasing AQI during the period of study. The greatest hospital admissions were observed in June and July 2023, consistent with highest levels of PM10 and values of DSI. Significant positive correlations were found between hospital admissions and both air pollutants and dust storm indices. AQI, DSI, Vis < 2 km (visibility < 2 km) and wind speed showed the highest correlations (r2 > 81). AQI and Vis < 2 km were the dominant factors contributing to hospital admissions. Further, the results suggested that AQI, PM10, visibility, and DSI can function as a tool for risk communication and assessment of dust-related disease and hospitalization risk.
空气质量指数（AQI）、PM10和PM2.5反映了空气污染水平，并用于评估与粉尘有关的疾病和住院的风险水平。以前的研究评估了与单个（如PM10）或多种空气污染物（AQI、PM10和PM2.5）相关的住院率，以检验这些指标在反映健康风险方面的功效。本研究考察了空气污染物（AQI、PM10和PM2.5）和沙尘暴指数（风速、能见度和沙尘暴指数（DSI））在反映健康风险方面的功效。在2022年的13次沙尘暴和2023年的20次沙尘暴期间，扎博尔医疗急救中心接收了呼吸道、眼部和心血管疾病的入院治疗。2022年5月至2023年12月，PM2.5和PM10数据来自扎博尔医科大学，能见度和风速数据来自扎博尔气象站。结果显示：AQI >；在研究期间，随着空气质量指数的增加，住院率也随之增加。2023年6月和7月住院人数最多，与PM10和DSI的最高水平一致。住院人数与空气污染物指数和沙尘暴指数均呈显著正相关。AQI， DSI, Vis <；2公里(能见度<；2 km)和风速的相关性最高(r2 >；81)。AQI与Vis；2公里是导致住院的主要因素。结果表明，AQI、PM10、能见度和DSI可以作为风险沟通和评估粉尘相关疾病和住院风险的工具。
{"title":"On the relationship between air pollution indices and risk level of dust-related diseases and associated hospitalization","authors":"Abbas Miri","doi":"10.1016/j.aeolia.2025.100972","DOIUrl":"10.1016/j.aeolia.2025.100972","url":null,"abstract":"<div><div>The air quality index (AQI), PM<sub>10</sub> and PM<sub>2.5</sub> reflect the level of air pollution and are used to assess the risk level of dust-related diseases and hospitalization. Previous studies have assessed the hospital admissions in relation to individual (e.g., PM<sub>10</sub>) or multiple air pollutants (AQI, PM<sub>10</sub>, and PM<sub>2.5</sub>) to examine the efficacy of these indices in reflecting health risks. This study examined the efficacy of air pollutants (AQI, PM<sub>10</sub>, and PM<sub>2.5</sub>) and dust storm indices (wind speed, visibility and dust storm index (DSI)) in reflecting health risks. Hospital admissions for respiratory, eye, and cardiovascular diseases were received from the Zabol Medical Emergency Center during 13 dust storm events in 2022 and 20 events in 2023. PM<sub>2.5</sub> and PM<sub>10</sub> were gathered from the Zabol University of Medical Sciences, and visibility and wind speed were collected from the Zabol meteorological station from May 2022 to Dec 2023. The results revealed AQI > 100 and an increase in hospital admissions with increasing AQI during the period of study. The greatest hospital admissions were observed in June and July 2023, consistent with highest levels of PM<sub>10</sub> and values of DSI. Significant positive correlations were found between hospital admissions and both air pollutants and dust storm indices. AQI, DSI, Vis < 2 km (visibility < 2 km) and wind speed showed the highest correlations (r<sup>2</sup> > 81). AQI and Vis < 2 km were the dominant factors contributing to hospital admissions. Further, the results suggested that AQI, PM<sub>10</sub>, visibility, and DSI can function as a tool for risk communication and assessment of dust-related disease and hospitalization risk.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100972"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-05-25DOI: 10.1016/j.aeolia.2025.100978
Adriana Mehl , Andrea Coronato , Ramiro López
Late Quaternary aeolian dune-paleosol sedimentary successions in perched dunes at the Fuegian steppe (northern Isla Grande de Tierra del Fuego, Patagonia) offer valuable insights into the Holocene climatic and environmental variability of southernmost South America, on the Southern Hemisphere westerly winds belt. Using morphological and geochemical data from eight paleosols interbedded in the aeolian units of a perched dune related to the ephemeral, shallow Laguna Arturo lake (53°43′ S, 68°18′ W), we assessed Holocene soil formation. The morphological characteristics and CIA index of the paleosols indicate poor to moderate weathering, with very limited hydrolysis and leaching mostly due to the subhumid climatic regime of the Fuegian steppe. Despite this, pedogenesis led to the formation of discrete paleosols after the Late Glacial. Oxidation is a conspicuous process in the Lateglacial-Early Holocene and early Middle Holocene paleosols of the succession. The poor pedological structure of paleosols from the late Middle Holocene, along with the aeolian deposits rate of sedimentation, records more likely arid conditions in southern Patagonia, a pattern consistent with other multi-proxy records in the region. The Late Holocene paleosols record slightly higher CIA indices and characteristics compatible with a higher moisture in the environment compared to the Middle Holocene. The studied dune-paleosol succession documents relatively short soil formation intervals, possibly linked to increased humidity in the Fuegian steppe due to short-term climate variability since around 12,800 cal yrs. BP, related to the dynamics of the Southern Hemisphere westerly winds.
{"title":"Holocene aeolian dune-paleosol record at the Fuegian steppe: assessment of interglacial climate and environmental variability at the southernmost tip of Patagonia (Isla Grande de Tierra del Fuego)","authors":"Adriana Mehl , Andrea Coronato , Ramiro López","doi":"10.1016/j.aeolia.2025.100978","DOIUrl":"10.1016/j.aeolia.2025.100978","url":null,"abstract":"<div><div>Late Quaternary aeolian dune-paleosol sedimentary successions in perched dunes at the Fuegian steppe (northern Isla Grande de Tierra del Fuego, Patagonia) offer valuable insights into the Holocene climatic and environmental variability of southernmost South America, on the Southern Hemisphere westerly winds belt. Using morphological and geochemical data from eight paleosols interbedded in the aeolian units of a perched dune related to the ephemeral, shallow Laguna Arturo lake (53°43′ S, 68°18′ W), we assessed Holocene soil formation. The morphological characteristics and CIA index of the paleosols indicate poor to moderate weathering, with very limited hydrolysis and leaching mostly due to the subhumid climatic regime of the Fuegian steppe. Despite this, pedogenesis led to the formation of discrete paleosols after the Late Glacial. Oxidation is a conspicuous process in the Lateglacial-Early Holocene and early Middle Holocene paleosols of the succession. The poor pedological structure of paleosols from the late Middle Holocene, along with the aeolian deposits rate of sedimentation, records more likely arid conditions in southern Patagonia, a pattern consistent with other multi-proxy records in the region. The Late Holocene paleosols record slightly higher CIA indices and characteristics compatible with a higher moisture in the environment compared to the Middle Holocene. The studied dune-paleosol succession documents relatively short soil formation intervals, possibly linked to increased humidity in the Fuegian steppe due to short-term climate variability since around 12,800 cal yrs. BP, related to the dynamics of the Southern Hemisphere westerly winds.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100978"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-03-14DOI: 10.1016/j.aeolia.2025.100971
Ruifei Yu , Lidong Zhu , Ji Wang , Tianyang Wang , Zhenzhen Ma , Fengquan Li , Xiao Zhang , Guangqin Du
The loess-like Quaternary red clay (QRC) covers extensive areas in South China, making its genesis and provenance essential for interpreting this unique paleoclimate archive in subtropical regions. However, it remains unclear whether the loess-like QRC originates from local fluvial deposits, the Chinese Loess Plateau, or a mixture of both. This study investigates the provenance of the loess-like QRC in mid-subtropical China, focusing on the interaction between local and distant dust sources. To achieve this, we applied geochemical methods, including grain size analysis, mineralogy, provenance indicators, and quantitative analysis, to two loess-like QRC sections (JL and LHH). Our findings indicate that the silt fraction is more effective for provenance discrimination, necessitating caution when interpreting bulk samples. Notably, the LHH section shows a shift from a predominance of local dust at the bottom to a significantly higher contribution from distant dust at the top. This trend suggests that since around 0.44 Ma, the intensification of the East Asian Winter Monsoon (EAWM) has facilitated enhanced dust transport from Central Asia, shifting the provenance of red earth in mid-subtropical China and reinforcing the mixed-source origin of the loess-like QRC. Additionally, variations in heavy mineral content indicate weak silicate weathering and/or pedogenesis in the YBS and VYS layers, which also suggesting a dry and cold climate since 0.44 Ma. This research provides valuable insights into the sediment dynamics and climatic factors shaping the provenance of the loess-like QRC in subtropical regions.
{"title":"East Asian winter monsoon during the late quaternary shifted the provenance of red earth in mid-subtropical China","authors":"Ruifei Yu , Lidong Zhu , Ji Wang , Tianyang Wang , Zhenzhen Ma , Fengquan Li , Xiao Zhang , Guangqin Du","doi":"10.1016/j.aeolia.2025.100971","DOIUrl":"10.1016/j.aeolia.2025.100971","url":null,"abstract":"<div><div>The loess-like Quaternary red clay (QRC) covers extensive areas in South China, making its genesis and provenance essential for interpreting this unique paleoclimate archive in subtropical regions. However, it remains unclear whether the loess-like QRC originates from local fluvial deposits, the Chinese Loess Plateau, or a mixture of both. This study investigates the provenance of the loess-like QRC in mid-subtropical China, focusing on the interaction between local and distant dust sources. To achieve this, we applied geochemical methods, including grain size analysis, mineralogy, provenance indicators, and quantitative analysis, to two loess-like QRC sections (JL and LHH). Our findings indicate that the silt fraction is more effective for provenance discrimination, necessitating caution when interpreting bulk samples. Notably, the LHH section shows a shift from a predominance of local dust at the bottom to a significantly higher contribution from distant dust at the top. This trend suggests that since around 0.44 Ma, the intensification of the East Asian Winter Monsoon (EAWM) has facilitated enhanced dust transport from Central Asia, shifting the provenance of red earth in mid-subtropical China and reinforcing the mixed-source origin of the loess-like QRC. Additionally, variations in heavy mineral content indicate weak silicate weathering and/or pedogenesis in the YBS and VYS layers, which also suggesting a dry and cold climate since 0.44 Ma. This research provides valuable insights into the sediment dynamics and climatic factors shaping the provenance of the loess-like QRC in subtropical regions.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100971"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143627866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-03-24DOI: 10.1016/j.aeolia.2025.100973
Liqiang Kang, Xiaomei Wang, Xueyong Zou, Zhicheng Yang
The existing research mainly focuses on the influence of a single type of roughness element on shear-stress partitioning and sediment transport. However, when the two types of roughness elements (such as gravel and vegetation) coexist, the laws of shear-stress partitioning and sediment transport are still unclear. Two different types of roughness elements are selected (one is the cylindrical gravel model, and the other is the flexible plant model). The distribution of surface shear stress, total shear stress and sand transport rate on different gravel-vegetation surfaces were measured in a wind tunnel. The results show that the shear-stress partitioning on gravel-vegetation surfaces is expressed as a function of the gravel lateral cover and the plant lateral cover, and the model parameters can be approximately characterized by the model parameters of gravel-only surface and vegetation-only surface. The sand transport rate on gravel-vegetation surface is related to the probability density function of surface shear stress which is expressed as a normal distribution function. For gravel lateral cover greater than 0.025, the parameter C in the model of sand transport rate decreases linearly with increasing gravel lateral cover and increases linearly with increasing plant frontal area, but is not influenced by plant lateral cover. The non-dimensional sand transport rate of gravel-vegetation surface decays exponentially with total lateral cover, and its decay rate is smaller than that of gravel-only surface, but larger than that of vegetation-only surface. The present research is helpful to improve wind erosion model in the future.
{"title":"Effect of the gravel-vegetation combination on shear-stress partitioning and sand transport rate","authors":"Liqiang Kang, Xiaomei Wang, Xueyong Zou, Zhicheng Yang","doi":"10.1016/j.aeolia.2025.100973","DOIUrl":"10.1016/j.aeolia.2025.100973","url":null,"abstract":"<div><div>The existing research mainly focuses on the influence of a single type of roughness element on shear-stress partitioning and sediment transport. However, when the two types of roughness elements (such as gravel and vegetation) coexist, the laws of shear-stress partitioning and sediment transport are still unclear. Two different types of roughness elements are selected (one is the cylindrical gravel model, and the other is the flexible plant model). The distribution of surface shear stress, total shear stress and sand transport rate on different gravel-vegetation surfaces were measured in a wind tunnel. The results show that the shear-stress partitioning on gravel-vegetation surfaces is expressed as a function of the gravel lateral cover and the plant lateral cover, and the model parameters can be approximately characterized by the model parameters of gravel-only surface and vegetation-only surface. The sand transport rate on gravel-vegetation surface is related to the probability density function of surface shear stress which is expressed as a normal distribution function. For gravel lateral cover greater than 0.025, the parameter <em>C</em> in the model of sand transport rate decreases linearly with increasing gravel lateral cover and increases linearly with increasing plant frontal area, but is not influenced by plant lateral cover. The non-dimensional sand transport rate of gravel-vegetation surface decays exponentially with total lateral cover, and its decay rate is smaller than that of gravel-only surface, but larger than that of vegetation-only surface. The present research is helpful to improve wind erosion model in the future.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100973"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-05-05DOI: 10.1016/j.aeolia.2025.100976
Yunkun Shi , Chongyi E , Zhaokang Zhang , Qiang Peng , Jing Zhang , Yongjuan Sun , Jiawei Wang
Aeolian sediments are a crucial component of Earth’s surface and serve as a significant terrestrial climate archive. The Menyuan Basin is a sensitive region for the interaction between the monsoons and Westerlies in the northeastern Qinghai-Tibet Plateau, where loess is extensively distributed, rendering it an ideal area for investigating climatic processes. In this study, climate changes in the Menyuan Basin since 40 ka are reconstructed using proxy records and luminescence dating obtained from the Yahecun profile. Our results show that the Menyuan Basin experienced a dry and cold climate from 40 to 16 ka, a continuous increase in moisture and temperature from 16 to 4.4 ka, and a relatively mild climate since 4.4 ka. The temperature variations in the Menyuan Basin are primarily driven by solar insolation; after 6 ka, the increase in the greenhouse gas concentrations contributed to higher temperatures. Precipitation in the region is governed by changes in the Westerlies and monsoons. During the glacial period, the summer monsoon weakened, and the transport of westerly water vapor decreased, resulting in reduced precipitation in the Menyuan Basin. Following the glacial period, an intensified summer monsoon and increased westerly water vapor transport collectively led to heightened precipitation. After 5 ka, the strengthening of the Westerlies likely sustained high precipitation in the Menyuan Basin. The intensity of winter monsoons in the Menyuan Basin is influenced by high-latitude insolation, with reduced high-latitude insolation after 6 ka leading to enhanced winter monsoons.
{"title":"Climate changes revealed from the aeolian sediments in the Menyuan Basin, northeastern Qinghai-Tibet Plateau","authors":"Yunkun Shi , Chongyi E , Zhaokang Zhang , Qiang Peng , Jing Zhang , Yongjuan Sun , Jiawei Wang","doi":"10.1016/j.aeolia.2025.100976","DOIUrl":"10.1016/j.aeolia.2025.100976","url":null,"abstract":"<div><div>Aeolian sediments are a crucial component of Earth’s surface and serve as a significant terrestrial climate archive. The Menyuan Basin is a sensitive region for the interaction between the monsoons and Westerlies in the northeastern Qinghai-Tibet Plateau, where loess is extensively distributed, rendering it an ideal area for investigating climatic processes. In this study, climate changes in the Menyuan Basin since 40 ka are reconstructed using proxy records and luminescence dating obtained from the Yahecun profile. Our results show that the Menyuan Basin experienced a dry and cold climate from 40 to 16 ka, a continuous increase in moisture and temperature from 16 to 4.4 ka, and a relatively mild climate since 4.4 ka. The temperature variations in the Menyuan Basin are primarily driven by solar insolation; after 6 ka, the increase in the greenhouse gas concentrations contributed to higher temperatures. Precipitation in the region is governed by changes in the Westerlies and monsoons. During the glacial period, the summer monsoon weakened, and the transport of westerly water vapor decreased, resulting in reduced precipitation in the Menyuan Basin. Following the glacial period, an intensified summer monsoon and increased westerly water vapor transport collectively led to heightened precipitation. After 5 ka, the strengthening of the Westerlies likely sustained high precipitation in the Menyuan Basin. The intensity of winter monsoons in the Menyuan Basin is influenced by high-latitude insolation, with reduced high-latitude insolation after 6 ka leading to enhanced winter monsoons.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"73 ","pages":"Article 100976"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2025-02-15DOI: 10.1016/j.aeolia.2025.100963
Giora J. Kidron , Abraham Starinsky , Joel Roskin
Aeolian-fluvial processes on Earth and Mars are drawing recent attention. Hypothesizing that water-induced horizontal layering (WIHL) may serve as an important tool for the reconstruction of the paleogeomorphology and climatology of wind-driven dunefields and sandstone, the properties of three types of WIHL are analyzed. WIHL may stem from floods, runoff or high water table, the distinction of which may be complicated. To study their unique properties and the factors responsible for their occurrence in an inland (Nizzana, Negev Desert) and coastal (Nizzanim; southern coast of Israel) dunefields, basic soil properties were analyzed: the electrical conductivity (EC), silt and clay, i.e., fines content (FC), calcium carbonate (CC), and organic carbon (OC). The findings show thin (commonly ≤ 5–6 cm-thick) disconnected FC- and CC– enriched horizontally-laid lenses within the upper soil profile of the sandy interdune, interpreted as runoff-induced sediments. Flat thick (0.5–1.0 m) and 40–60 m-diameter patches (playas) of fines-enriched sediments, scattered within the Nizzana interdunes, were interpreted as flood-induced sediments. Albic (bleached) horizons at 10–30 cm depth at the coast, which did not exhibit significant changes in FC and CC, were interpreted to result from alternating oxidation and redox sequences during occasionally high water table. The current data indicate that variability in the spatial distribution of FC, CC and OC may point to the origin and factors responsible for the occurrence of variable WIHL. This may assist geologists and sedimentologists to reconstruct high-resolution paleoenvironmental and climatological aeolian-fluvial conditions of coastal, inland and past geological sand bodies and sandstones.
{"title":"The geomorphic and palaeoenvironmental significance of water-induced horizontal layering in arid inland and coastal mediterranean interdunes","authors":"Giora J. Kidron , Abraham Starinsky , Joel Roskin","doi":"10.1016/j.aeolia.2025.100963","DOIUrl":"10.1016/j.aeolia.2025.100963","url":null,"abstract":"<div><div>Aeolian-fluvial processes on Earth and Mars are drawing recent attention. Hypothesizing that water-induced horizontal layering (WIHL) may serve as an important tool for the reconstruction of the paleogeomorphology and climatology of wind-driven dunefields and sandstone, the properties of three types of WIHL are analyzed. WIHL may stem from floods, runoff or high water table, the distinction of which may be complicated. To study their unique properties and the factors responsible for their occurrence in an inland (Nizzana, Negev Desert) and coastal (Nizzanim; southern coast of Israel) dunefields, basic soil properties were analyzed: the electrical conductivity (EC), silt and clay, i.e., fines content (FC), calcium carbonate (CC), and organic carbon (OC). The findings show thin (commonly ≤ 5–6 cm-thick) disconnected FC- and CC– enriched horizontally-laid lenses within the upper soil profile of the sandy interdune, interpreted as runoff-induced sediments. Flat thick (0.5–1.0 m) and 40–60 m-diameter patches (playas) of fines-enriched sediments, scattered within the Nizzana interdunes, were interpreted as flood-induced sediments. Albic (bleached) horizons at 10–30 cm depth at the coast, which did not exhibit significant changes in FC and CC, were interpreted to result from alternating oxidation and redox sequences during occasionally high water table. The current data indicate that variability in the spatial distribution of FC, CC and OC may point to the origin and factors responsible for the occurrence of variable WIHL. This may assist geologists and sedimentologists to reconstruct high-resolution paleoenvironmental and climatological aeolian-fluvial conditions of coastal, inland and past geological sand bodies and sandstones.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"72 ","pages":"Article 100963"},"PeriodicalIF":3.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143420503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2024-12-04DOI: 10.1016/j.aeolia.2024.100954
Zachary Lawless , Ty Hosler , Bradley R. Adams , Gregory T. Carling
Dust events are tracked from source to sink using geochemical/isotopic tracers, dust emission and transport modeling, or remote sensing, but these tools are rarely used together. To test the utility of combining multiple dust tracking methods, we used three Wasatch Front (Utah) dust events from August 2009, May 2020, and September 2020 to compare source apportionment estimated by the Community Multiscale Air Quality (CMAQ) model and strontium isotope (87Sr/86Sr) ratios. The Wasatch Front is impacted by atmospheric particulate matter (PM) from local urban sources and regional playas including Sevier Dry Lake, Great Salt Lake (GSL), and the GSL Desert. CMAQ modeling of the August 2009 event showed dust emission and transport from multiple playa sources to the Salt Lake City measurement site as wind patterns changed during the storm. The predicted mix of sources was consistent with the measured 87Sr/86Sr ratio of 0.71217 on the PM10 filter collected during the event. Modeling of the May 2020 period showed a consistent meteorological pattern that carried dust from the Sevier Dry Lake area toward the Provo measurement site, consistent with the measured 87Sr/86Sr ratio of 0.71015. Modeling of the September 2020 period indicated a major dust event with complex wind patterns that changed during the event, resulting in relatively small amounts of dust from GSL Desert being transported to the Provo site. No emissions from Sevier Dry Lake were predicted to reach the site during the September event, suggesting GSL Desert contributions were mixed with local dust with a lower 87Sr/86Sr ratio to produce the measured value of 0.71097. Results from the three dust events demonstrate the benefits of combining CMAQ emission and transport modeling with isotopic data from PM10 filters to better characterize dust source-to-sink behavior in Utah, and illustrate the potential for application in other arid regions.
{"title":"Combining modeling and isotopic signatures to track Aeolian dust from source to sink in the Wasatch Front, Utah, USA","authors":"Zachary Lawless , Ty Hosler , Bradley R. Adams , Gregory T. Carling","doi":"10.1016/j.aeolia.2024.100954","DOIUrl":"10.1016/j.aeolia.2024.100954","url":null,"abstract":"<div><div>Dust events are tracked from source to sink using geochemical/isotopic tracers, dust emission and transport modeling, or remote sensing, but these tools are rarely used together. To test the utility of combining multiple dust tracking methods, we used three Wasatch Front (Utah) dust events from August 2009, May 2020, and September 2020 to compare source apportionment estimated by the Community Multiscale Air Quality (CMAQ) model and strontium isotope (<sup>87</sup>Sr/<sup>86</sup>Sr) ratios. The Wasatch Front is impacted by atmospheric particulate matter (PM) from local urban sources and regional playas including Sevier Dry Lake, Great Salt Lake (GSL), and the GSL Desert. CMAQ modeling of the August 2009 event showed dust emission and transport from multiple playa sources to the Salt Lake City measurement site as wind patterns changed during the storm. The predicted mix of sources was consistent with the measured<!--> <sup>87</sup>Sr/<sup>86</sup>Sr ratio of 0.71217 on the PM<sub>10</sub> <!-->filter collected during the event. Modeling of the May 2020 period showed a consistent meteorological pattern that carried dust from the Sevier Dry Lake area toward the Provo measurement site, consistent with the measured<!--> <sup>87</sup>Sr/<sup>86</sup>Sr ratio of 0.71015. Modeling of the September 2020 period indicated a major dust event with complex wind patterns that changed during the event, resulting in relatively small amounts of dust from GSL Desert being transported to the Provo site. No emissions from Sevier Dry Lake were predicted to reach the site during the September event, suggesting GSL Desert contributions were mixed with local dust with a lower <sup>87</sup>Sr/<sup>86</sup>Sr ratio to produce the measured value of 0.71097. Results from the three dust events demonstrate the benefits of combining CMAQ emission and transport modeling with isotopic data from PM<sub>10</sub> <!-->filters to better characterize dust source-to-sink behavior in Utah, and illustrate the potential for application in other arid regions.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"72 ","pages":"Article 100954"},"PeriodicalIF":3.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2025-02-07DOI: 10.1016/j.aeolia.2025.100962
L.A. de Oro , F. Avecilla , M.S. Larroulet , R.N. Comas , M.J. Mendez
Wind erosion is a major soil degradation process in arid and semi-arid environments, like the semi-arid region of Argentina. Xerophytic Caldén forests in these areas, often experience natural summer fires which reduce vegetation cover and its protective effect on the soil. PM10 (particles with diameters < 10 µm) emission is part of the wind erosion process. In the Caldén forest, cyclically fires affect the physico-chemical properties of the soil, depending on surface temperatures. However, information on how these changes affect soil susceptibility to wind erosion and PM10 emission is limited. This study aimed to evaluate the effect of temperatures from 100 to 600 °C on Caldén forest soil with varying vegetation cover and its potential to emit PM10 (PE-PM10). Soil samples were collected from Grassland site (gramineous-herbaceous stratum without woody plants influence) and Forest site (shrubby and arboreal stratum). The study evaluated physical (texture, microaggregation, erodible fraction < 0.84 mm) and chemical (total organic carbon −TOC-) surface changes and PE-PM10 after exposure to different temperatures. In both sites, temperatures above 400 °C decreased TOC and altered physical properties by reducing clay and coarse sands content while increasing silt and fine sands content. Erodible fraction increased and the microaggregation decreased with rising temperature. PE-PM10 was correlated in a linear and positive way with temperature in both sites (p < 0.05), with highest emission at 600 °C. Grassland site showed higher emissions than Forest. These results suggested that higher temperatures reduced clay and TOC content, key to soil stability, leading to increased PM10 emissions as microaggregates break down.
{"title":"Potential PM10 emission from soil affected by different temperatures in a Caldén Forest of semiarid Pampas, Argentina","authors":"L.A. de Oro , F. Avecilla , M.S. Larroulet , R.N. Comas , M.J. Mendez","doi":"10.1016/j.aeolia.2025.100962","DOIUrl":"10.1016/j.aeolia.2025.100962","url":null,"abstract":"<div><div>Wind erosion is a major soil degradation process in arid and semi-arid environments, like the semi-arid region of Argentina. Xerophytic Caldén forests in these areas, often experience natural summer fires which reduce vegetation cover and its protective effect on the soil. PM10 (particles with diameters < 10 µm) emission is part of the wind erosion process. In the Caldén forest, cyclically fires affect the physico-chemical properties of the soil, depending on surface temperatures. However, information on how these changes affect soil susceptibility to wind erosion and PM10 emission is limited. This study aimed to evaluate the effect of temperatures from 100 to 600 °C on Caldén forest soil with varying vegetation cover and its potential to emit PM10 (PE-PM10). Soil samples were collected from Grassland site (gramineous-herbaceous stratum without woody plants influence) and Forest site (shrubby and arboreal stratum). The study evaluated physical (texture, microaggregation, erodible fraction < 0.84 mm) and chemical (total organic carbon −TOC-) surface changes and PE-PM10 after exposure to different temperatures. In both sites, temperatures above 400 °C decreased TOC and altered physical properties by reducing clay and coarse sands content while increasing silt and fine sands content. Erodible fraction increased and the microaggregation decreased with rising temperature. PE-PM10 was correlated in a linear and positive way with temperature in both sites (p < 0.05), with highest emission at 600 °C. Grassland site showed higher emissions than Forest. These results suggested that higher temperatures reduced clay and TOC content, key to soil stability, leading to increased PM10 emissions as microaggregates break down.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"72 ","pages":"Article 100962"},"PeriodicalIF":3.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143298123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号