Geochemistry and grain size analysis of the Tangra Yumco lake sediment record
A possible asynchronicity of the spatial and temporal moisture availability on the Tibetan Plateau was controversially discussed in recent years. Here we present the first attempt to systematically investigate possible spatial and temporal variations of moisture availability by examining two lakes,...
Main Authors: | , , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2016
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.869940 https://doi.org/10.1594/PANGAEA.869940 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.869940 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.869940 2023-05-15T16:37:54+02:00 Geochemistry and grain size analysis of the Tangra Yumco lake sediment record Ahlborn, Marieke Haberzettl, Torsten Wang, Junbo Henkel, Karoline Kasper, Thomas Daut, Gerhard Zhu, Liping Mäusbacher, Roland MEDIAN LATITUDE: 31.242385 * MEDIAN LONGITUDE: 86.721815 * SOUTH-BOUND LATITUDE: 31.232170 * WEST-BOUND LONGITUDE: 86.720830 * NORTH-BOUND LATITUDE: 31.252600 * EAST-BOUND LONGITUDE: 86.722800 2016-01-03 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.869940 https://doi.org/10.1594/PANGAEA.869940 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.869940 https://doi.org/10.1594/PANGAEA.869940 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ahlborn, Marieke; Haberzettl, Torsten; Wang, Junbo; Henkel, Karoline; Kasper, Thomas; Daut, Gerhard; Zhu, Liping; Mäusbacher, Roland (2016): Synchronous pattern of moisture availability on the southern Tibetan Plateau since 17.5 cal. ka BP - the Tangra Yumco lake sediment record. Boreas, https://doi.org/10.1111/bor.12204 Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.869940 https://doi.org/10.1111/bor.12204 2023-01-20T07:33:50Z A possible asynchronicity of the spatial and temporal moisture availability on the Tibetan Plateau was controversially discussed in recent years. Here we present the first attempt to systematically investigate possible spatial and temporal variations of moisture availability by examining two lakes, Tangra Yumco and Nam Co, on an east-west-transect on the southern Tibetan Plateau using identical proxies for palaeoenvironmental reconstruction. In this study, an independent record from Tangra Yumco was analyzed applying a multi-proxy approach to reconstruct variations in moisture availability since the Lateglacial. Results were subsequently compared to previously published records from Nam Co and additional records from Tso Moriri (northwestern Himalaya) and Naleng Co (south-eastern Tibetan Plateau). Our results show that Tangra Yumco was at least partially ice-covered prior to 17.1 cal. ka BP. A temperature rise after 17.1 cal. ka BP probably resulted in thawing of the permafrost. At 16.0 cal. ka BP moisture availability increased representing an initial monsoonal intensification. Warmer conditions between 13.0 and 12.4 cal. ka BP and cooler conditions between 12.4 cal. ka BP and the onset of the Holocene reflect the Bølling-Allerød and Younger Dryas. At the onset of the Holocene moisture availability rapidly increased, while moisture was highest prior to 8.5 cal. ka BP concurrently with highest temperatures. After 8.5 cal. ka BP the moisture availability gradually decreased and showed only minor amplitude variations. These findings are well in phase with the records from other large lakes likes Nam Co, Tso Moriri, and Naleng Co revealing a synchronous pattern of moisture availability on the southern Tibetan Plateau. Dataset Ice permafrost PANGAEA - Data Publisher for Earth & Environmental Science Tangra ENVELOPE(-60.100,-60.100,-62.667,-62.667) ENVELOPE(86.720830,86.722800,31.252600,31.232170) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
A possible asynchronicity of the spatial and temporal moisture availability on the Tibetan Plateau was controversially discussed in recent years. Here we present the first attempt to systematically investigate possible spatial and temporal variations of moisture availability by examining two lakes, Tangra Yumco and Nam Co, on an east-west-transect on the southern Tibetan Plateau using identical proxies for palaeoenvironmental reconstruction. In this study, an independent record from Tangra Yumco was analyzed applying a multi-proxy approach to reconstruct variations in moisture availability since the Lateglacial. Results were subsequently compared to previously published records from Nam Co and additional records from Tso Moriri (northwestern Himalaya) and Naleng Co (south-eastern Tibetan Plateau). Our results show that Tangra Yumco was at least partially ice-covered prior to 17.1 cal. ka BP. A temperature rise after 17.1 cal. ka BP probably resulted in thawing of the permafrost. At 16.0 cal. ka BP moisture availability increased representing an initial monsoonal intensification. Warmer conditions between 13.0 and 12.4 cal. ka BP and cooler conditions between 12.4 cal. ka BP and the onset of the Holocene reflect the Bølling-Allerød and Younger Dryas. At the onset of the Holocene moisture availability rapidly increased, while moisture was highest prior to 8.5 cal. ka BP concurrently with highest temperatures. After 8.5 cal. ka BP the moisture availability gradually decreased and showed only minor amplitude variations. These findings are well in phase with the records from other large lakes likes Nam Co, Tso Moriri, and Naleng Co revealing a synchronous pattern of moisture availability on the southern Tibetan Plateau. |
format |
Dataset |
author |
Ahlborn, Marieke Haberzettl, Torsten Wang, Junbo Henkel, Karoline Kasper, Thomas Daut, Gerhard Zhu, Liping Mäusbacher, Roland |
spellingShingle |
Ahlborn, Marieke Haberzettl, Torsten Wang, Junbo Henkel, Karoline Kasper, Thomas Daut, Gerhard Zhu, Liping Mäusbacher, Roland Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
author_facet |
Ahlborn, Marieke Haberzettl, Torsten Wang, Junbo Henkel, Karoline Kasper, Thomas Daut, Gerhard Zhu, Liping Mäusbacher, Roland |
author_sort |
Ahlborn, Marieke |
title |
Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
title_short |
Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
title_full |
Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
title_fullStr |
Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
title_full_unstemmed |
Geochemistry and grain size analysis of the Tangra Yumco lake sediment record |
title_sort |
geochemistry and grain size analysis of the tangra yumco lake sediment record |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.869940 https://doi.org/10.1594/PANGAEA.869940 |
op_coverage |
MEDIAN LATITUDE: 31.242385 * MEDIAN LONGITUDE: 86.721815 * SOUTH-BOUND LATITUDE: 31.232170 * WEST-BOUND LONGITUDE: 86.720830 * NORTH-BOUND LATITUDE: 31.252600 * EAST-BOUND LONGITUDE: 86.722800 |
long_lat |
ENVELOPE(-60.100,-60.100,-62.667,-62.667) ENVELOPE(86.720830,86.722800,31.252600,31.232170) |
geographic |
Tangra |
geographic_facet |
Tangra |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Supplement to: Ahlborn, Marieke; Haberzettl, Torsten; Wang, Junbo; Henkel, Karoline; Kasper, Thomas; Daut, Gerhard; Zhu, Liping; Mäusbacher, Roland (2016): Synchronous pattern of moisture availability on the southern Tibetan Plateau since 17.5 cal. ka BP - the Tangra Yumco lake sediment record. Boreas, https://doi.org/10.1111/bor.12204 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.869940 https://doi.org/10.1594/PANGAEA.869940 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.869940 https://doi.org/10.1111/bor.12204 |
_version_ |
1766028194835595264 |