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A sediment record from Lake Nam Co dataset (Holocene)
CTR :89
Key words Nam Co,sediment record,Holocene
Relevant data This study focuses on Holocene monsoon dynamics on the central Tibetan Plateau (TP) inferred using a sediment record from Lake Nam Co. A high-resolution (decadal) multi-proxy approach, using geochemical, micropaleontological, and sedimentological methods was applied. Fifteen AMS-14C ages were used to establish the chronology, assuming a reservoir effect of 1420 years. Our results point to a first strong monsoonal pulse at Lake Nam Co ~11.3 cal ka BP, followed by colder and drier conditions until ~10.8 cal ka BP. A warm and humid climate from ~10.8 to ~9.5 cal ka BP is related to a strong summer monsoon on the central TP, triggering a lake-level highstand at ~9.5 cal ka BP. Declining minerogenic input after ~9.5 cal ka BP indicates less moisture availability until ~7.7 cal ka BP. Following stable conditions between ~7.7 and ~6.6 cal ka BP, a warm and wet climate is inferred for the time span from ~6.6 to ~4.8 cal ka BP. A change towards drier conditions after ~4.8 cal ka BP points to a weakening of the Indian Ocean Summer Monsoon on the central TP, further diminished after ~2.0 cal ka BP. A short-term wet spell occurred from ~1.5 to ~1.3 cal ka BP. By comparing the results derived from Lake Nam Co with several lacustrine records from the central, northern, and eastern TP, a similar but not synchronous pattern of monsoon-driven paleoenvironmental change is observed. Although the general trend of lake and catchment evolution on the TP during the Holocene is also reproduced in this record, pronounced spatial and temporal offsets with respect to distinct climate events were detected, suggesting periods of non-uniform moisture and temperature evolution.
Data shows that
a. Description of Intellectual Property Rights When using a dataset, please refer to the following documents in the article: Stefan Doberschutz, Peter Frenzel, Torsten Haberzettl, et al. Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China)[J]. J Paleolimnol, 2013, 52(2): 253-266 b. The data labels refer to the following specifications: In order to respect intellectual property rights and protect the rights and interests of data contributors and service providers, data users are requested to mark the data sources in the research results (including project evaluation reports, acceptance reports, academic papers and graduation thesis) based on this data, and the references cited in the [Citation Reference], and submit the publicly available results to the "National Earth System Science Data Sharing Platform" Data sources refer to the following specifications: Chinese Expression: 国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库; English Expression: East Asian Paleoenvironmental Science Database, National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China Acknowledgments refer to the following specifications: Acknowledgments in Chinese: 感谢国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库提供数据支撑。 Acknowledgments in English: Acknowledgement for the data support from " National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China, East Asian Paleoenvironmental Science Database. " Iegal liability: The platform owns intellectual property rights protected by the law, including copyrights for all the data products or services and relevant information published by the platform itself or contributed by some data contributors. No unit or individual may copy, modify, transcribing, spread or sell any part of the above data products, services, information or materials in any way or reason without the written permission of this platform. Where the infringement of copyright and other intellectual property rights of the platform, the platform will be held accountable according to law, hereby solemnly declare! c. Contacts Name: Data processing group Email: eapsd@ieecas.cn Tel: 029-62336213
Data collection format Excel
Data classification Geological record - Lakes and oceans
Data source
East Asian Paleoenvironmental Science Database
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Full name: 
ZhaoHL Email: zhaohl@ieecas.cn
Unit: IEECAS Phone: 029-62336213
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