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| DOI | 10.1177/09596836231163486 |
| Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso | |
| Sagwal, Sumit; Kumar, Anil; Sharma, Choudhurimayum Pankaj; Srivastava, Pradeep; Agarwal, Shravi; Bhushan, Ravi | |
| 发表日期 | 2023 |
| ISSN | 0959-6836 |
| EISSN | 1477-0911 |
| 起始页码 | 842 |
| 结束页码 | 859 |
| 卷号 | 33期号:7 |
| 英文摘要 | Variations in lake-levels and hydrology are connected to climatic dynamics over the Trans-Himalaya and Tibetan Plateau (TP). Pangong Tso, a similar to 140 km long hypersaline lake, is sensitive to changes in air temperature, precipitation and snow-glacier melt over the southwestern TP. The incised tributaries entering the lake expose deltaic sequences constituting topset, foreset and bottomset. Sedimentology, chronology and diatom analysis of delta sediments; and stable isotopic and sclerochronological analysis of gastropods helped delineate the Late-Holocene variation in lake levels, surface temperature and salinity. The elevation of the topsets is considered as representing past lake high-stands from where molluscs were also recovered. Three phased lake level changes are observed during the past 3 ka. The first high-stand (+1.4-3.0 m) was at similar to 2.8-2.0 ka when lake surface salinity and temperature were 4.67-6.01 ppt (parts per thousand) and 5 degrees C-7 degrees C, respectively, against the modern average values of 7.7 +/- 0.09 ppt and 16.1 degrees C +/- 2.0 degrees C. Followed by a brief decline, another high-stand (+3.0-3.6 m) is observed at 1.1 ka when the salinity is reduced to 4.03-5.72 ppt and lake surface temperature to 5 degrees C8 degrees C. A corresponding increase in freshwater diatom concentration is also observed here. The third phase over the past 1 ka witnessed a fall of similar to 3.6-6 m in lake level that is attributed to an abrupt rise in aridity over the TP. We demonstrate that lake level variation in the region is a function of the variability of the Indian Summer Monsoon (ISM) and the westerlies, however during the high-stand, the hydrology of the lake was dominated by ISM precipitation. |
| 关键词 | ISMLadakh Himalayalake level fluctuationLate-Holocenepaleoclimatesclerochronological analysis |
| 英文关键词 | BASIN WESTERN TIBET; CARBON-ISOTOPE; QINGHAI LAKE; ENVIRONMENTAL-CHANGES; GASTROPOD RADIX; SUMMER MONSOON; INDUS RIVER; CLIMATE; OXYGEN; TEMPERATURE |
| WOS研究方向 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000974230500001 |
| 来源期刊 | HOLOCENE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/283867 |
| 作者单位 | Department of Science & Technology (India); Wadia Institute of Himalayan Geology (WIHG); Academy of Scientific & Innovative Research (AcSIR); Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay; Hemwati Nandan Bahuguna Garhwal University; Department of Space (DoS), Government of India; Physical Research Laboratory - India; Department of Science & Technology (India); Wadia Institute of Himalayan Geology (WIHG) |
| 推荐引用方式 GB/T 7714 | Sagwal, Sumit,Kumar, Anil,Sharma, Choudhurimayum Pankaj,et al. Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso[J],2023,33(7). |
| APA | Sagwal, Sumit,Kumar, Anil,Sharma, Choudhurimayum Pankaj,Srivastava, Pradeep,Agarwal, Shravi,&Bhushan, Ravi.(2023).Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso.HOLOCENE,33(7). |
| MLA | Sagwal, Sumit,et al."Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau: Paleo-salinity records from Pangong Tso".HOLOCENE 33.7(2023). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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