Dian
Continuous lacustrine records of the Indian Summer Monsoon that span the Pleistocene-Holocene transition to the present are relatively rare, yet crucial to providing context to future changes in hydroclimate. We summarize here a 17,000 year continuous multi-proxy record of hydroclimate and primary p...
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Online Access: | https://doi.org/10.17632/p727gc8rpf.1 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::2492c199f1c6f2103e6c3f9ca177a93f 2023-05-15T17:35:16+02:00 Dian Hillman, Aubrey Aubrey Hillman Yao, Alice Finkenbinder, Matthew Abbott, Mark 2020-11-16 https://doi.org/10.17632/p727gc8rpf.1 undefined unknown Mendeley https://dx.doi.org/10.17632/p727gc8rpf.1 http://dx.doi.org/10.17632/p727gc8rpf.1 lic_creative-commons 10.17632/p727gc8rpf.1 oai:easy.dans.knaw.nl:easy-dataset:192967 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:192967 doi:10.17632/p727gc8rpf.1 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::db814dc656a911b556dba42a331cebe9 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 Lake Sediment China Paleoclimate Holocene Stable Isotope Late Pleistocene Interdisciplinary sciences relig envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.17632/p727gc8rpf.1 2023-01-22T16:51:50Z Continuous lacustrine records of the Indian Summer Monsoon that span the Pleistocene-Holocene transition to the present are relatively rare, yet crucial to providing context to future changes in hydroclimate. We summarize here a 17,000 year continuous multi-proxy record of hydroclimate and primary productivity from Lake Dian in the central Yunnan Province of China. Analysis of sediment composition, opal, carbon to nitrogen ratios, carbon and nitrogen stable isotope ratios, and magnetic susceptibility (MS) are used to identify four distinct lithologic units in the sediment record. Unit I sediments from 17,000 to 11,500 years BP are characterized by high MS and uniformly low organic and opal content interupted by a decrease in MS during the B��lling-Aller��d indicating the influence of the North Atlantic on the Indian Monsoon. We interpret this to reflect cold, dry, and windy conditions during the transition out of the Last Glacial Maximum. Unit II from 11,500 to 5,000 years BP is marked by a pronounced decrease in MS, increase in opal, and decrease in ���13Corg of organic carbon driven by peak warmth and wet conditions increasing productivity. Unit III from 5,000 to 1,800 years BP shows further increases in primary productivity, marked by lower carbon to nitrogen ratios and carbonate precipitation, possibly driven by a drop in lake level. A period of aridity is in wide agreement with a number of other records from the region. Unit IV from 1,800 years BP to present is dominated by anthropogenic impacts and hallmark signs of catchment soil erosion and cultural eutrophication. Our interpretations of the Dian sediment record agree well with previous palynological work and add a new dimension to our understanding of lake hydrology and productivity over the past 17,000 years. Dataset North Atlantic Unknown Indian |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Lake Sediment China Paleoclimate Holocene Stable Isotope Late Pleistocene Interdisciplinary sciences relig envir |
spellingShingle |
Lake Sediment China Paleoclimate Holocene Stable Isotope Late Pleistocene Interdisciplinary sciences relig envir Hillman, Aubrey Dian |
topic_facet |
Lake Sediment China Paleoclimate Holocene Stable Isotope Late Pleistocene Interdisciplinary sciences relig envir |
description |
Continuous lacustrine records of the Indian Summer Monsoon that span the Pleistocene-Holocene transition to the present are relatively rare, yet crucial to providing context to future changes in hydroclimate. We summarize here a 17,000 year continuous multi-proxy record of hydroclimate and primary productivity from Lake Dian in the central Yunnan Province of China. Analysis of sediment composition, opal, carbon to nitrogen ratios, carbon and nitrogen stable isotope ratios, and magnetic susceptibility (MS) are used to identify four distinct lithologic units in the sediment record. Unit I sediments from 17,000 to 11,500 years BP are characterized by high MS and uniformly low organic and opal content interupted by a decrease in MS during the B��lling-Aller��d indicating the influence of the North Atlantic on the Indian Monsoon. We interpret this to reflect cold, dry, and windy conditions during the transition out of the Last Glacial Maximum. Unit II from 11,500 to 5,000 years BP is marked by a pronounced decrease in MS, increase in opal, and decrease in ���13Corg of organic carbon driven by peak warmth and wet conditions increasing productivity. Unit III from 5,000 to 1,800 years BP shows further increases in primary productivity, marked by lower carbon to nitrogen ratios and carbonate precipitation, possibly driven by a drop in lake level. A period of aridity is in wide agreement with a number of other records from the region. Unit IV from 1,800 years BP to present is dominated by anthropogenic impacts and hallmark signs of catchment soil erosion and cultural eutrophication. Our interpretations of the Dian sediment record agree well with previous palynological work and add a new dimension to our understanding of lake hydrology and productivity over the past 17,000 years. |
author2 |
Aubrey Hillman Yao, Alice Finkenbinder, Matthew Abbott, Mark |
format |
Dataset |
author |
Hillman, Aubrey |
author_facet |
Hillman, Aubrey |
author_sort |
Hillman, Aubrey |
title |
Dian |
title_short |
Dian |
title_full |
Dian |
title_fullStr |
Dian |
title_full_unstemmed |
Dian |
title_sort |
dian |
publisher |
Mendeley |
publishDate |
2020 |
url |
https://doi.org/10.17632/p727gc8rpf.1 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
10.17632/p727gc8rpf.1 oai:easy.dans.knaw.nl:easy-dataset:192967 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:192967 doi:10.17632/p727gc8rpf.1 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::db814dc656a911b556dba42a331cebe9 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 |
op_relation |
https://dx.doi.org/10.17632/p727gc8rpf.1 http://dx.doi.org/10.17632/p727gc8rpf.1 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.17632/p727gc8rpf.1 |
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1766134385146331136 |