Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China
Equilibrium-line altitudes (ELAs) are an important proxy of the fluctuations and mass–balance characteristics of glaciers and have been widely used to reconstruct regional paleoclimatic conditions. The Diancang Massif, which has experienced the well-known "Tali Glacial Stage" was uplifted...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-03-01
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| Series: | Open Geosciences |
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| Online Access: | https://doi.org/10.1515/geo-2022-0426 |
| _version_ | 1797848713017688064 |
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| author | Zeng Hongyun Li Peng Zhu Yunqiang Zhang Jinqu Zhao Xiaoqin |
| author_facet | Zeng Hongyun Li Peng Zhu Yunqiang Zhang Jinqu Zhao Xiaoqin |
| author_sort | Zeng Hongyun |
| collection | DOAJ |
| description | Equilibrium-line altitudes (ELAs) are an important proxy of the fluctuations and mass–balance characteristics of glaciers and have been widely used to reconstruct regional paleoclimatic conditions. The Diancang Massif, which has experienced the well-known "Tali Glacial Stage" was uplifted during MIS 3b (marine isotope stages). With its unique characteristics, the Diancang Massif has become an irreplaceable area for the study of inland paleoclimatic and paleo-environmental changes in China. Nevertheless, despite the considerable amount of glaciological studies on this area, a detailed and systematic estimation of paleoglacial ELAs during the Last Glacial Maximum remains to be performed. In this study, several approaches are employed to estimate the ELAs on the basis of previous studies. The results are compared and analyzed, and the final results are determined using a weighted arithmetic average method. Finally, the weighted root mean square error is applied to evaluate the accuracy of the results. Moreover, two critical parameters, differences between positive and negative effects and the distance ratio between the accumulation area and ablation area, are discussed in detail. In the comprehensive results, the final estimated paleoglacial ELAs of the north slope of “Yuju Peak” and the south slope of “Longquan Peak” are 3,773 and 3,883 m, and their median errors are 18.73 and 45.00 m, respectively. Overall, paleoglacial ELAs in the Diancang Massif could be systematically and scientifically estimated for the first time, which is expected to provide fundamental data for accurate modeling of paleoclimatic changes in this area. |
| first_indexed | 2024-04-09T18:32:03Z |
| format | Article |
| id | doaj.art-866c835691ec41b8bd428f1224bb82a8 |
| institution | Directory Open Access Journal |
| issn | 2391-5447 |
| language | English |
| last_indexed | 2024-04-09T18:32:03Z |
| publishDate | 2023-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Geosciences |
| spelling | doaj.art-866c835691ec41b8bd428f1224bb82a82023-04-11T17:07:16ZengDe GruyterOpen Geosciences2391-54472023-03-011511456810.1515/geo-2022-0426Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, ChinaZeng Hongyun0Li Peng1Zhu Yunqiang2Zhang Jinqu3Zhao Xiaoqin4School of Earth Sciences, Yunnan University, Kunming, ChinaSchool of Business and Tourism Management, Yunnan University, Kunming, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, ChinaSchool of Computer Sciences, South China Normal University, Guangzhou, ChinaSchool of Earth Sciences, Yunnan University, Kunming, ChinaEquilibrium-line altitudes (ELAs) are an important proxy of the fluctuations and mass–balance characteristics of glaciers and have been widely used to reconstruct regional paleoclimatic conditions. The Diancang Massif, which has experienced the well-known "Tali Glacial Stage" was uplifted during MIS 3b (marine isotope stages). With its unique characteristics, the Diancang Massif has become an irreplaceable area for the study of inland paleoclimatic and paleo-environmental changes in China. Nevertheless, despite the considerable amount of glaciological studies on this area, a detailed and systematic estimation of paleoglacial ELAs during the Last Glacial Maximum remains to be performed. In this study, several approaches are employed to estimate the ELAs on the basis of previous studies. The results are compared and analyzed, and the final results are determined using a weighted arithmetic average method. Finally, the weighted root mean square error is applied to evaluate the accuracy of the results. Moreover, two critical parameters, differences between positive and negative effects and the distance ratio between the accumulation area and ablation area, are discussed in detail. In the comprehensive results, the final estimated paleoglacial ELAs of the north slope of “Yuju Peak” and the south slope of “Longquan Peak” are 3,773 and 3,883 m, and their median errors are 18.73 and 45.00 m, respectively. Overall, paleoglacial ELAs in the Diancang Massif could be systematically and scientifically estimated for the first time, which is expected to provide fundamental data for accurate modeling of paleoclimatic changes in this area.https://doi.org/10.1515/geo-2022-0426paleoglacier, equilibrium-line altitudeslast glacial maximumdiancang massifpaleoglacier reconstructiontali glacial stage |
| spellingShingle | Zeng Hongyun Li Peng Zhu Yunqiang Zhang Jinqu Zhao Xiaoqin Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China Open Geosciences paleoglacier, equilibrium-line altitudes last glacial maximum diancang massif paleoglacier reconstruction tali glacial stage |
| title | Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China |
| title_full | Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China |
| title_fullStr | Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China |
| title_full_unstemmed | Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China |
| title_short | Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China |
| title_sort | reconstruction of paleoglacial equilibrium line altitudes during the last glacial maximum in the diancang massif northwest yunnan province china |
| topic | paleoglacier, equilibrium-line altitudes last glacial maximum diancang massif paleoglacier reconstruction tali glacial stage |
| url | https://doi.org/10.1515/geo-2022-0426 |
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