Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR)
Datasets presented in the Quaternary Science Reviews article "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020; 10.1016/j.quascirev.2020.106542). Abstract: The respective impacts of Northern and So...
Main Author: | |
---|---|
Language: | unknown |
Published: |
2020
|
Subjects: | |
Online Access: | http://nbn-resolving.org/urn:nbn:nl:ui:13-ub-7f9z https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:192434 |
id |
ftdans:oai:easy.dans.knaw.nl:easy-dataset:192434 |
---|---|
record_format |
openpolar |
spelling |
ftdans:oai:easy.dans.knaw.nl:easy-dataset:192434 2023-07-02T03:30:40+02:00 Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) MARTIN, L (via Mendeley Data) 2020-09-20T13:22:07.958Z http://nbn-resolving.org/urn:nbn:nl:ui:13-ub-7f9z https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:192434 unknown 1 7rvd2mck58 http://nbn-resolving.org/urn:nbn:nl:ui:13-ub-7f9z doi:10.17632/7rvd2mck58.1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:192434 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Leo MARTIN Interdisciplinary sciences 2020 ftdans https://doi.org/10.17632/7rvd2mck58.1 2023-06-13T12:42:36Z Datasets presented in the Quaternary Science Reviews article "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020; 10.1016/j.quascirev.2020.106542). Abstract: The respective impacts of Northern and Southern Hemispheric climatic changes on the Tropics during the last deglaciation remain poorly understood. In the High Tropical Andes, the Antarctic Cold Reversal (ACR, 14.3–12.9 ka BP) is better represented among morainic records than the Younger Dryas (12.9–11.7 ka BP). However, in the Altiplano basin (Bolivia), two cold periods of the Northern Hemisphere (Heinrich Stadial 1a, 16.5–14.5 ka BP, and the Younger Dryas) are synchronous with (i) major advances or standstills of paleoglaciers and (ii) the highstands of giant paleolakes Tauca and Coipasa. Here, we present new cosmic ray exposure (CRE) ages from glacial landforms of the Bolivian Andes that formed during the last deglaciation (Termination 1). We reconstruct the equilibrium line altitudes (ELA) associated with each moraine and use them in an inverse algorithm combining paleoglaciers and paleolake budgets to derive temperature and precipitation during the last deglaciation. Our temperature reconstruction (ΔT relative to present day) yields a consistent regional trend of progressive warming from ΔT = −5 to −2.5 °C during 17–14.5 ka BP, followed by a return to colder conditions around −4 °C during the ACR (14.5–12.9 ka BP). The Coipasa highstand (12.9–11.8 ka BP) is coeval with another warming trend followed by ΔT stabilization at the onset of the Holocene (ca. 10 ka BP), around −3 °C. Our results suggest that, during the last deglaciation (20–10 ka BP) atmospheric temperatures in the Tropical Andes mimicked Antarctic variability, whereas precipitation over the Altiplano was driven by changes in the Northern Hemisphere. Other/Unknown Material Antarc* Antarctic Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Antarctic Ela ENVELOPE(9.642,9.642,63.170,63.170) The Altiplano ENVELOPE(163.917,163.917,-78.133,-78.133) The Antarctic |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Interdisciplinary sciences |
spellingShingle |
Interdisciplinary sciences MARTIN, L (via Mendeley Data) Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
topic_facet |
Interdisciplinary sciences |
description |
Datasets presented in the Quaternary Science Reviews article "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020; 10.1016/j.quascirev.2020.106542). Abstract: The respective impacts of Northern and Southern Hemispheric climatic changes on the Tropics during the last deglaciation remain poorly understood. In the High Tropical Andes, the Antarctic Cold Reversal (ACR, 14.3–12.9 ka BP) is better represented among morainic records than the Younger Dryas (12.9–11.7 ka BP). However, in the Altiplano basin (Bolivia), two cold periods of the Northern Hemisphere (Heinrich Stadial 1a, 16.5–14.5 ka BP, and the Younger Dryas) are synchronous with (i) major advances or standstills of paleoglaciers and (ii) the highstands of giant paleolakes Tauca and Coipasa. Here, we present new cosmic ray exposure (CRE) ages from glacial landforms of the Bolivian Andes that formed during the last deglaciation (Termination 1). We reconstruct the equilibrium line altitudes (ELA) associated with each moraine and use them in an inverse algorithm combining paleoglaciers and paleolake budgets to derive temperature and precipitation during the last deglaciation. Our temperature reconstruction (ΔT relative to present day) yields a consistent regional trend of progressive warming from ΔT = −5 to −2.5 °C during 17–14.5 ka BP, followed by a return to colder conditions around −4 °C during the ACR (14.5–12.9 ka BP). The Coipasa highstand (12.9–11.8 ka BP) is coeval with another warming trend followed by ΔT stabilization at the onset of the Holocene (ca. 10 ka BP), around −3 °C. Our results suggest that, during the last deglaciation (20–10 ka BP) atmospheric temperatures in the Tropical Andes mimicked Antarctic variability, whereas precipitation over the Altiplano was driven by changes in the Northern Hemisphere. |
author |
MARTIN, L (via Mendeley Data) |
author_facet |
MARTIN, L (via Mendeley Data) |
author_sort |
MARTIN, L (via Mendeley Data) |
title |
Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
title_short |
Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
title_full |
Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
title_fullStr |
Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
title_full_unstemmed |
Dataset from : "Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation" (Martin et al., 2020 - QSR) |
title_sort |
dataset from : "antarctic-like temperature variations in the tropical andes recorded by glaciers and lakes during the last deglaciation" (martin et al., 2020 - qsr) |
publishDate |
2020 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-ub-7f9z https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:192434 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(163.917,163.917,-78.133,-78.133) |
geographic |
Antarctic Ela The Altiplano The Antarctic |
geographic_facet |
Antarctic Ela The Altiplano The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
1 7rvd2mck58 http://nbn-resolving.org/urn:nbn:nl:ui:13-ub-7f9z doi:10.17632/7rvd2mck58.1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:192434 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Leo MARTIN |
op_doi |
https://doi.org/10.17632/7rvd2mck58.1 |
_version_ |
1770274908818898944 |