Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau
The existence of glacial lakes in the southeastern Tibetan Plateau (SETP) is a potential hazard to downstream regions, as the outburst of such lakes has the potential to result in disastrous glacial lake outburst floods (GLOFs). In the present study, we conducted a comprehensive investigation of Bie...
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Copernicus Publications
2023
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ftdoajarticles:oai:doaj.org/article:f780bf32c0bf4a0a9ebedf6f7aeb4062 2023-05-15T18:32:29+02:00 Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau H. Duan X. Yao Y. Zhang H. Jin Q. Wang Z. Du J. Hu B. Wang 2023-02-01T00:00:00Z https://doi.org/10.5194/tc-17-591-2023 https://doaj.org/article/f780bf32c0bf4a0a9ebedf6f7aeb4062 EN eng Copernicus Publications https://tc.copernicus.org/articles/17/591/2023/tc-17-591-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-591-2023 1994-0416 1994-0424 https://doaj.org/article/f780bf32c0bf4a0a9ebedf6f7aeb4062 The Cryosphere, Vol 17, Pp 591-616 (2023) Environmental sciences GE1-350 Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.5194/tc-17-591-2023 2023-02-12T01:30:25Z The existence of glacial lakes in the southeastern Tibetan Plateau (SETP) is a potential hazard to downstream regions, as the outburst of such lakes has the potential to result in disastrous glacial lake outburst floods (GLOFs). In the present study, we conducted a comprehensive investigation of Bienong Co, a moraine-dammed glacial lake in the SETP. First, the lake basin morphology was determined, and the lake volume was estimated, showing that the maximum lake depth is ∼181 m and the lake volume is <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>∼</mo><mn mathvariant="normal">102.3</mn><mo>×</mo><msup><mn mathvariant="normal">10</mn><mn mathvariant="normal">6</mn></msup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="68pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="aeea7b3d314ff5f150aa7a4958bf963e"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-591-2023-ie00001.svg" width="68pt" height="14pt" src="tc-17-591-2023-ie00001.png"/></svg:svg> m 3 . These scenarios included the possibility of GLOFs being triggered by ice avalanches (Scenarios A1–3) from the mother glacier or by landslides from the lateral moraines (Scenarios B1–3 and C1–3). Avalanche volumes of the nine trigger scenarios were obtained from the Rapid Mass Movement Simulation (RAMMS) modeling results. Next, the Basic Simulation Environment for Computation of Environmental Flow and Natural Hazard Simulation (BASEMENT) model was used to simulate the generation and propagation of the avalanche-induced displacement waves in the lake. With the model, the overtopping flows and erosion on the moraine dam and the subsequent downstream floods were also simulated. The results indicate that the ice avalanche scenario may cause the largest mass volume entering the lake, resulting in a displacement wave up to 25.2 m in ... Article in Journal/Newspaper The Cryosphere Directory of Open Access Journals: DOAJ Articles Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) The Cryosphere 17 2 591 616 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 H. Duan X. Yao Y. Zhang H. Jin Q. Wang Z. Du J. Hu B. Wang Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
The existence of glacial lakes in the southeastern Tibetan Plateau (SETP) is a potential hazard to downstream regions, as the outburst of such lakes has the potential to result in disastrous glacial lake outburst floods (GLOFs). In the present study, we conducted a comprehensive investigation of Bienong Co, a moraine-dammed glacial lake in the SETP. First, the lake basin morphology was determined, and the lake volume was estimated, showing that the maximum lake depth is ∼181 m and the lake volume is <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>∼</mo><mn mathvariant="normal">102.3</mn><mo>×</mo><msup><mn mathvariant="normal">10</mn><mn mathvariant="normal">6</mn></msup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="68pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="aeea7b3d314ff5f150aa7a4958bf963e"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-591-2023-ie00001.svg" width="68pt" height="14pt" src="tc-17-591-2023-ie00001.png"/></svg:svg> m 3 . These scenarios included the possibility of GLOFs being triggered by ice avalanches (Scenarios A1–3) from the mother glacier or by landslides from the lateral moraines (Scenarios B1–3 and C1–3). Avalanche volumes of the nine trigger scenarios were obtained from the Rapid Mass Movement Simulation (RAMMS) modeling results. Next, the Basic Simulation Environment for Computation of Environmental Flow and Natural Hazard Simulation (BASEMENT) model was used to simulate the generation and propagation of the avalanche-induced displacement waves in the lake. With the model, the overtopping flows and erosion on the moraine dam and the subsequent downstream floods were also simulated. The results indicate that the ice avalanche scenario may cause the largest mass volume entering the lake, resulting in a displacement wave up to 25.2 m in ... |
format |
Article in Journal/Newspaper |
author |
H. Duan X. Yao Y. Zhang H. Jin Q. Wang Z. Du J. Hu B. Wang |
author_facet |
H. Duan X. Yao Y. Zhang H. Jin Q. Wang Z. Du J. Hu B. Wang |
author_sort |
H. Duan |
title |
Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
title_short |
Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
title_full |
Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
title_fullStr |
Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
title_full_unstemmed |
Lake volume and potential hazards of moraine-dammed glacial lakes – a case study of Bienong Co, southeastern Tibetan Plateau |
title_sort |
lake volume and potential hazards of moraine-dammed glacial lakes – a case study of bienong co, southeastern tibetan plateau |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-591-2023 https://doaj.org/article/f780bf32c0bf4a0a9ebedf6f7aeb4062 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Glacial Lake |
geographic_facet |
Glacial Lake |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 17, Pp 591-616 (2023) |
op_relation |
https://tc.copernicus.org/articles/17/591/2023/tc-17-591-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-591-2023 1994-0416 1994-0424 https://doaj.org/article/f780bf32c0bf4a0a9ebedf6f7aeb4062 |
op_doi |
https://doi.org/10.5194/tc-17-591-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
2 |
container_start_page |
591 |
op_container_end_page |
616 |
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1766216599855955968 |