Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau
Oxygen-isotope records from the sediments of hydrologically-closed lakes are commonly interpreted in terms of changing effective precipitation. We compare an 850-year-long oxygen-isotope record derived from ostracode carbonate from the sediments of Sugan Lake, in the northern Tibetan Plateau, with t...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:126422 2023-12-24T10:17:32+01:00 Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau Holmes, JA Zhang, JW Chen, FH Qiang, MR 2007-12-11 application/pdf https://discovery.ucl.ac.uk/id/eprint/126422/1/2007GL032228.pdf https://discovery.ucl.ac.uk/id/eprint/126422/ eng eng AMER GEOPHYSICAL UNION https://discovery.ucl.ac.uk/id/eprint/126422/1/2007GL032228.pdf https://discovery.ucl.ac.uk/id/eprint/126422/ open Geophysical Research Letters , 34 (23) , Article L23403. (2007) ASIAN MONSOON TREE-RINGS ICE CORE CHINA PRECIPITATION QINGHAI LAKE PLEISTOCENE MOISTURE CLIMATE Article 2007 ftucl 2023-11-27T13:07:35Z Oxygen-isotope records from the sediments of hydrologically-closed lakes are commonly interpreted in terms of changing effective precipitation. We compare an 850-year-long oxygen-isotope record derived from ostracode carbonate from the sediments of Sugan Lake, in the northern Tibetan Plateau, with tree-ring and ice core evidence for changing temperature, precipitation and isotopic composition of the lake's inflow. Taking into account all of these independent records, we show that variations in the carbonate delta O-18 values could not have been the result of varying effective precipitation alone: changes in water temperature and in the delta O-18 of source waters also played a significant role. Where independent records of temperature, precipitation or the isotopic composition of input waters are unavailable, care should be taken to avoid simplistic interpretations of carbonate stable isotope records, as these may contribute to incorrect paleoclimatic reconstructions. Article in Journal/Newspaper ice core University College London: UCL Discovery |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
ASIAN MONSOON TREE-RINGS ICE CORE CHINA PRECIPITATION QINGHAI LAKE PLEISTOCENE MOISTURE CLIMATE |
spellingShingle |
ASIAN MONSOON TREE-RINGS ICE CORE CHINA PRECIPITATION QINGHAI LAKE PLEISTOCENE MOISTURE CLIMATE Holmes, JA Zhang, JW Chen, FH Qiang, MR Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
topic_facet |
ASIAN MONSOON TREE-RINGS ICE CORE CHINA PRECIPITATION QINGHAI LAKE PLEISTOCENE MOISTURE CLIMATE |
description |
Oxygen-isotope records from the sediments of hydrologically-closed lakes are commonly interpreted in terms of changing effective precipitation. We compare an 850-year-long oxygen-isotope record derived from ostracode carbonate from the sediments of Sugan Lake, in the northern Tibetan Plateau, with tree-ring and ice core evidence for changing temperature, precipitation and isotopic composition of the lake's inflow. Taking into account all of these independent records, we show that variations in the carbonate delta O-18 values could not have been the result of varying effective precipitation alone: changes in water temperature and in the delta O-18 of source waters also played a significant role. Where independent records of temperature, precipitation or the isotopic composition of input waters are unavailable, care should be taken to avoid simplistic interpretations of carbonate stable isotope records, as these may contribute to incorrect paleoclimatic reconstructions. |
format |
Article in Journal/Newspaper |
author |
Holmes, JA Zhang, JW Chen, FH Qiang, MR |
author_facet |
Holmes, JA Zhang, JW Chen, FH Qiang, MR |
author_sort |
Holmes, JA |
title |
Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
title_short |
Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
title_full |
Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
title_fullStr |
Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
title_full_unstemmed |
Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau |
title_sort |
paleoclimatic implications of an 850-year oxygen-isotope record from the northern tibetan plateau |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2007 |
url |
https://discovery.ucl.ac.uk/id/eprint/126422/1/2007GL032228.pdf https://discovery.ucl.ac.uk/id/eprint/126422/ |
genre |
ice core |
genre_facet |
ice core |
op_source |
Geophysical Research Letters , 34 (23) , Article L23403. (2007) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/126422/1/2007GL032228.pdf https://discovery.ucl.ac.uk/id/eprint/126422/ |
op_rights |
open |
_version_ |
1786205754848444416 |