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Insights into rework mechanisms of glaciers on rock avalanche deposits in Pamir since the end of the late Pleistocene.

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Title: Insights into rework mechanisms of glaciers on rock avalanche deposits in Pamir since the end of the late Pleistocene.
Authors: Wang, Qingdong1,2,3 (AUTHOR), Zhang, Yingbin2 (AUTHOR) yingbinz719@swjtu.edu.cn, Peng, Xinyan4 (AUTHOR), Wang, Lei3 (AUTHOR), Yu, Pengcheng2 (AUTHOR), Hu, Bing2 (AUTHOR), Liu, Jing2 (AUTHOR), Zeng, Ying2 (AUTHOR), Buah, Peter Antwi2 (AUTHOR), Bohnhoff, Marco3 (AUTHOR)
Source: Landslides. May2025, Vol. 22 Issue 5, p1435-1453. 19p.
Subjects: Rockslides, Rock glaciers, Physical geology, Earth sciences, Physical geography
Abstract: Glacial reworking of large rock avalanche sediment significantly contributes to glacial sediment transfer. This study presents two interaction models, derived from a comprehensive site investigation and numerical simulation, to elucidate the redistribution impact of glaciers on rock avalanche deposits. We examined the landforms of rock avalanche deposits subjected to glacial modification for over 14,000 years in Muztagh Ata, Kashgar, Xinjiang Province, China. To accurately capture the kinematic behavior of the glacier, we integrated the Glen flow law into the discontinuous deformation analysis (DDA) coupled with smoothed particle hydrodynamics (SPH) method. Temperature evolution was also considered as a critical input parameter of our models. We found that the region near the glacier source primarily experienced entrainment, while areas further away were characterized by expansion. Additionally, we systematically investigated the effects of temperature and stress exponent on the viscosity and movement distance of glaciers. Our study is expected to provide some valuable insights into the dynamics of glacier interactions with rock avalanche deposits, thereby enhancing understanding of their combined influence on landscape formation and sediment redistribution. [ABSTRACT FROM AUTHOR]
Copyright of Landslides is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Insights into rework mechanisms of glaciers on rock avalanche deposits in Pamir since the end of the late Pleistocene.
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  Data: <searchLink fieldCode="JN" term="%22Landslides%22">Landslides</searchLink>. May2025, Vol. 22 Issue 5, p1435-1453. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Rockslides%22">Rockslides</searchLink><br /><searchLink fieldCode="DE" term="%22Rock+glaciers%22">Rock glaciers</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+geology%22">Physical geology</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+geography%22">Physical geography</searchLink>
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  Data: Glacial reworking of large rock avalanche sediment significantly contributes to glacial sediment transfer. This study presents two interaction models, derived from a comprehensive site investigation and numerical simulation, to elucidate the redistribution impact of glaciers on rock avalanche deposits. We examined the landforms of rock avalanche deposits subjected to glacial modification for over 14,000 years in Muztagh Ata, Kashgar, Xinjiang Province, China. To accurately capture the kinematic behavior of the glacier, we integrated the Glen flow law into the discontinuous deformation analysis (DDA) coupled with smoothed particle hydrodynamics (SPH) method. Temperature evolution was also considered as a critical input parameter of our models. We found that the region near the glacier source primarily experienced entrainment, while areas further away were characterized by expansion. Additionally, we systematically investigated the effects of temperature and stress exponent on the viscosity and movement distance of glaciers. Our study is expected to provide some valuable insights into the dynamics of glacier interactions with rock avalanche deposits, thereby enhancing understanding of their combined influence on landscape formation and sediment redistribution. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Landslides is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Rock glaciers
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              Text: May2025
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