A new remote-sensing-based volcanic debris avalanche database of Northwest Argentina (Central Andes)

IF 5.8 2区工程技术 Q1 ENGINEERING, GEOLOGICAL Landslides Pub Date : 2024-09-18 DOI:10.1007/s10346-024-02365-y

Emilce Bustos, Gianluca Norini, Walter Ariel Báez, Pablo Grosse, Marcelo Arnosio, Lucia Capra

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Abstract

Volcanic debris avalanches are significant landslide events that shape volcanic landscapes globally. This study focuses on creating a comprehensive database of volcanic debris avalanches in Northwest Argentina through remote sensing analysis, leveraging the region’s well-preserved deposits in arid conditions. The database includes morphometric parameters extracted from 12-m spatial resolution TanDEM-X digital elevation models and literature, providing insights into the occurrence and characteristics of these potentially catastrophic events. The methodology involved compiling bibliographic and cartographic data, manual digitization of collapse scars and deposits, and computation of morphometric parameters in a GIS, integrating structural lineaments and hydrothermal alteration zones. The database, which comprises 19 records, features detailed data on scars and deposits, morphometric characteristics, and additional layers for regional lineaments and hydrothermal alteration zones. Statistical analyses reveal correlations between various morphometric parameters, with most avalanche directions aligning perpendicularly to regional tectonic trends and hydrothermal alteration zones identified as significant factors in volcanic instability. The majority of collapses originate from composite volcanoes, with larger collapses linked to dacitic compositions. Collapses have ages between the Upper Miocene and Pliocene. We deem that the database, accessible via the IBIGEO website, will be a valuable tool for researchers and national authorities for geological risk assessment, enhancing the understanding of the spatial and temporal distribution of volcanic debris avalanches in the Central Volcanic Zone of the Andes. Continuous updates and fieldwork are essential to validate and expand the database, addressing gaps and confirming remote observations, thereby contributing to global knowledge on volcanic sector collapses and associated risks.

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阿根廷西北部（中安第斯山脉）基于遥感技术的新火山碎屑雪崩数据库

火山碎屑崩塌是影响全球火山地貌的重大滑坡事件。本研究的重点是利用该地区在干旱条件下保存完好的沉积物，通过遥感分析建立阿根廷西北部火山碎屑崩塌综合数据库。该数据库包括从 12 米空间分辨率的 TanDEM-X 数字高程模型和文献中提取的形态参数，有助于深入了解这些潜在灾难性事件的发生情况和特征。该方法包括汇编文献和制图数据、手工数字化塌陷疤痕和沉积物、在地理信息系统中计算形态测量参数，并将结构线形和热液蚀变带整合在一起。该数据库共有 19 条记录，包括塌陷疤痕和沉积物的详细数据、形态计量特征，以及区域线状构造和热液蚀变带的附加图层。统计分析揭示了各种形态测量参数之间的相关性，大多数雪崩方向与区域构造趋势和热液蚀变带垂直，被认为是火山不稳定的重要因素。大多数崩塌源于复合火山，较大的崩塌与白云岩成分有关。崩塌的年代介于上新世和中新世之间。我们认为，可通过 IBIGEO 网站访问的该数据库将成为研究人员和国家当局进行地质风险评估的宝贵工具，有助于加深对安第斯山脉中部火山区火山碎屑崩塌的时空分布的了解。不断更新和实地考察对于验证和扩大数据库、弥补差距和确认遥感观测结果至关重要，从而促进全球对火山区崩塌和相关风险的了解。

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来源期刊

Landslides 地学-地球科学综合

CiteScore

13.60

自引率

14.90%

发文量

191

审稿时长

>12 weeks

期刊介绍： Landslides are gravitational mass movements of rock, debris or earth. They may occur in conjunction with other major natural disasters such as floods, earthquakes and volcanic eruptions. Expanding urbanization and changing land-use practices have increased the incidence of landslide disasters. Landslides as catastrophic events include human injury, loss of life and economic devastation and are studied as part of the fields of earth, water and engineering sciences. The aim of the journal Landslides is to be the common platform for the publication of integrated research on landslide processes, hazards, risk analysis, mitigation, and the protection of our cultural heritage and the environment. The journal publishes research papers, news of recent landslide events and information on the activities of the International Consortium on Landslides. - Landslide dynamics, mechanisms and processes - Landslide risk evaluation: hazard assessment, hazard mapping, and vulnerability assessment - Geological, Geotechnical, Hydrological and Geophysical modeling - Effects of meteorological, hydrological and global climatic change factors - Monitoring including remote sensing and other non-invasive systems - New technology, expert and intelligent systems - Application of GIS techniques - Rock slides, rock falls, debris flows, earth flows, and lateral spreads - Large-scale landslides, lahars and pyroclastic flows in volcanic zones - Marine and reservoir related landslides - Landslide related tsunamis and seiches - Landslide disasters in urban areas and along critical infrastructure - Landslides and natural resources - Land development and land-use practices - Landslide remedial measures / prevention works - Temporal and spatial prediction of landslides - Early warning and evacuation - Global landslide database