构造和气候对帕米尔高原地形空间变化的控制以及对排水系统演变的影响

IF 2.7 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Journal of Asian Earth Sciences Pub Date : 2024-09-16 DOI:10.1016/j.jseaes.2024.106333
{"title":"构造和气候对帕米尔高原地形空间变化的控制以及对排水系统演变的影响","authors":"","doi":"10.1016/j.jseaes.2024.106333","DOIUrl":null,"url":null,"abstract":"<div><p>The Pamir Plateau, NW prolongation of the Tibetan Plateau, experienced late Cenozoic thrusting and extensional shearing/faulting and mainly receives moisture from the mid-latitude Westerlies. Thus, this region provides a natural laboratory to study how tectonic activity and climate impact topography. In this study, we extracted geomorphic indices from digital elevation model data, including local relief, normalized channel steepness index (<em>k<sub>sn</sub></em>), river longitudinal and <em>χ</em> profiles, as well as cross-valley profiles, to reveal the topographic variations across the Pamir Plateau, and to analyze the effects of tectonic activity and climate on its topography. Because the upper reaches of the Panj, Ghez, and Tashkurgan river catchments, and the Karakul Lake endorheic catchment are located in extremely low precipitation regions and dominantly result from late Cenozoic crustal extension, they generally have low local relief and <em>k<sub>sn</sub></em> values, gentle gradients on the <em>χ</em>-elevation plots, and wide valleys, especially along the intermontane basins. By contrast, the lower reaches of the Panj, Ghez, and Tashkurgan catchments generally have high local relief and <em>k<sub>sn</sub></em> values, steep gradients on the <em>χ</em>-elevation plots, and narrow V-shaped, deeply-incised valleys. For the lower reaches of the Panj catchment in the western Pamir, this difference is due to relatively high precipitation from the Westerlies, but for those of the Ghez and Tashkurgan catchments in the eastern Pamir, although they receive low precipitation, they cross the footwall of the Kongur Shan normal fault, along which tectonic uplift rates are particularly high. During the past ∼ 25 Ma, the drainage divide between the Panj catchment and the Ghez and Tashkurgan catchments migrated eastwards from the Pamir Plateau interior to its present location along the eastern Pamir Range, driven by high precipitation and erosion to the west.</p></div>","PeriodicalId":50253,"journal":{"name":"Journal of Asian Earth Sciences","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Tectonic and climatic controls on topographic spatial variability across the Pamir Plateau and implications for drainage evolution\",\"authors\":\"\",\"doi\":\"10.1016/j.jseaes.2024.106333\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Pamir Plateau, NW prolongation of the Tibetan Plateau, experienced late Cenozoic thrusting and extensional shearing/faulting and mainly receives moisture from the mid-latitude Westerlies. Thus, this region provides a natural laboratory to study how tectonic activity and climate impact topography. In this study, we extracted geomorphic indices from digital elevation model data, including local relief, normalized channel steepness index (<em>k<sub>sn</sub></em>), river longitudinal and <em>χ</em> profiles, as well as cross-valley profiles, to reveal the topographic variations across the Pamir Plateau, and to analyze the effects of tectonic activity and climate on its topography. Because the upper reaches of the Panj, Ghez, and Tashkurgan river catchments, and the Karakul Lake endorheic catchment are located in extremely low precipitation regions and dominantly result from late Cenozoic crustal extension, they generally have low local relief and <em>k<sub>sn</sub></em> values, gentle gradients on the <em>χ</em>-elevation plots, and wide valleys, especially along the intermontane basins. By contrast, the lower reaches of the Panj, Ghez, and Tashkurgan catchments generally have high local relief and <em>k<sub>sn</sub></em> values, steep gradients on the <em>χ</em>-elevation plots, and narrow V-shaped, deeply-incised valleys. For the lower reaches of the Panj catchment in the western Pamir, this difference is due to relatively high precipitation from the Westerlies, but for those of the Ghez and Tashkurgan catchments in the eastern Pamir, although they receive low precipitation, they cross the footwall of the Kongur Shan normal fault, along which tectonic uplift rates are particularly high. During the past ∼ 25 Ma, the drainage divide between the Panj catchment and the Ghez and Tashkurgan catchments migrated eastwards from the Pamir Plateau interior to its present location along the eastern Pamir Range, driven by high precipitation and erosion to the west.</p></div>\",\"PeriodicalId\":50253,\"journal\":{\"name\":\"Journal of Asian Earth Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Asian Earth Sciences\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1367912024003286\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Asian Earth Sciences","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1367912024003286","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

帕米尔高原是青藏高原向西北的延伸,经历了新生代晚期的推移和延伸剪切/断层,主要接受来自中纬度西风的湿气。因此,该地区为研究构造活动和气候如何影响地形提供了一个天然实验室。在这项研究中,我们从数字高程模型数据中提取了地貌指数,包括局部地形、归一化河道陡度指数(ksn)、河流纵剖面和χ剖面以及跨谷剖面,以揭示帕米尔高原的地形变化,并分析构造活动和气候对其地形的影响。由于上游的潘杰河、格孜河、塔什库尔干河集水区和卡拉库勒湖内流集水区位于降水量极低的地区,且主要是新生代晚期地壳延伸的结果,因此它们的局部地形和 ksn 值普遍较低,χ-高程图上的梯度平缓,河谷宽阔,尤其是沿山间盆地的河谷。相比之下,Panj、Ghez 和 Tashkurgan 集水区的下游通常具有较高的局部地形起伏和 ksn 值、χ 高程图上的陡峭梯度以及狭窄的 V 形深谷。帕米尔西部 Panj 集水区的下游之所以存在这种差异,是因为西风降水量相对较高,而帕米尔东部 Ghez 和 Tashkurgan 集水区的降水量虽然较低,但它们横跨孔古尔山正断层的底壁,沿此断层的构造隆起率特别高。在过去的 ∼ 25 Ma 期间,潘杰集水区与格孜集水区和塔什库尔干集水区之间的排水分界线从帕米尔高原内部向东迁移,在高降水量和西侧侵蚀作用的推动下,沿着帕米尔山脉东部迁移到了现在的位置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Tectonic and climatic controls on topographic spatial variability across the Pamir Plateau and implications for drainage evolution

The Pamir Plateau, NW prolongation of the Tibetan Plateau, experienced late Cenozoic thrusting and extensional shearing/faulting and mainly receives moisture from the mid-latitude Westerlies. Thus, this region provides a natural laboratory to study how tectonic activity and climate impact topography. In this study, we extracted geomorphic indices from digital elevation model data, including local relief, normalized channel steepness index (ksn), river longitudinal and χ profiles, as well as cross-valley profiles, to reveal the topographic variations across the Pamir Plateau, and to analyze the effects of tectonic activity and climate on its topography. Because the upper reaches of the Panj, Ghez, and Tashkurgan river catchments, and the Karakul Lake endorheic catchment are located in extremely low precipitation regions and dominantly result from late Cenozoic crustal extension, they generally have low local relief and ksn values, gentle gradients on the χ-elevation plots, and wide valleys, especially along the intermontane basins. By contrast, the lower reaches of the Panj, Ghez, and Tashkurgan catchments generally have high local relief and ksn values, steep gradients on the χ-elevation plots, and narrow V-shaped, deeply-incised valleys. For the lower reaches of the Panj catchment in the western Pamir, this difference is due to relatively high precipitation from the Westerlies, but for those of the Ghez and Tashkurgan catchments in the eastern Pamir, although they receive low precipitation, they cross the footwall of the Kongur Shan normal fault, along which tectonic uplift rates are particularly high. During the past ∼ 25 Ma, the drainage divide between the Panj catchment and the Ghez and Tashkurgan catchments migrated eastwards from the Pamir Plateau interior to its present location along the eastern Pamir Range, driven by high precipitation and erosion to the west.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Asian Earth Sciences
Journal of Asian Earth Sciences 地学-地球科学综合
CiteScore
5.90
自引率
10.00%
发文量
324
审稿时长
71 days
期刊介绍: Journal of Asian Earth Sciences has an open access mirror journal Journal of Asian Earth Sciences: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The Journal of Asian Earth Sciences is an international interdisciplinary journal devoted to all aspects of research related to the solid Earth Sciences of Asia. The Journal publishes high quality, peer-reviewed scientific papers on the regional geology, tectonics, geochemistry and geophysics of Asia. It will be devoted primarily to research papers but short communications relating to new developments of broad interest, reviews and book reviews will also be included. Papers must have international appeal and should present work of more than local significance. The scope includes deep processes of the Asian continent and its adjacent oceans; seismology and earthquakes; orogeny, magmatism, metamorphism and volcanism; growth, deformation and destruction of the Asian crust; crust-mantle interaction; evolution of life (early life, biostratigraphy, biogeography and mass-extinction); fluids, fluxes and reservoirs of mineral and energy resources; surface processes (weathering, erosion, transport and deposition of sediments) and resulting geomorphology; and the response of the Earth to global climate change as viewed within the Asian continent and surrounding oceans.
期刊最新文献
Moho topographic inversion of the South China Sea based on genetic algorithm Editorial Board Depositional and diagenetic heterogeneities in sequence stratigraphic framework of a mixed carbonate-siliciclastic reservoir: A case study from Oligocene–Miocene Asmari Formation in the Persian Gulf Sedimentary records of liquefaction from central Kerala (southwestern India), as earthquake indicators in a cratonic area Refined evaluation approach for geometrical, physical and chemical properties of completely decomposed tuff soil particles
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1