Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events
We present the results of biogeochemical and mineralogical analyses on a sediment core that covers the Holocene sedimentation history of the climatically sensitive, closed, saline, and alkaline Lonar Lake in the core monsoon zone in central India. We compare our results of C/N ratios, stable carbon...
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ftindinstgeomagn:oai:localhost:123456789/771 2023-05-15T17:29:14+02:00 Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events Menzel, Philip Gaye, Birgit Mishra, Praveen K. Anoop, Ambili Basavaiah, N. Marwan, Norbert Plessen, Birgit Prasad, Sushma Riedel, Nils Stebich, Martina Wiesner, Martin G. 2014 http://14.139.123.141:8080/jspui/handle/123456789/771 en eng Lake sediment Indian monsoon Holocene Climate reconstruction Stable carbon isotope Amino acid Article 2014 ftindinstgeomagn 2019-11-26T08:39:27Z We present the results of biogeochemical and mineralogical analyses on a sediment core that covers the Holocene sedimentation history of the climatically sensitive, closed, saline, and alkaline Lonar Lake in the core monsoon zone in central India. We compare our results of C/N ratios, stable carbon and nitrogen isotopes, grain-size, as well as amino acid derived degradation proxies with climatically sensitive proxies of other records from South Asia and the North Atlantic region. The comparison reveals some more or less contemporaneous climate shifts. At Lonar Lake, a general long term climate transition from wet conditions during the early Holocene to drier conditions during the late Holocene, delineating the insolation curve, can be reconstructed. In addition to the previously identified periods of prolonged drought during 4.6–3.9 and 2.0–0.6 cal ka that have been attributed to temperature changes in the Indo Pacific Warm Pool, several additional phases of shorter term climate alteration superimposed upon the general climate trend can be identified. These correlate with cold phases in the North Atlantic region. The most pronounced climate deteriorations indicated by our data occurred during 6.2–5.2, 4.6–3.9, and 2.0–0.6 cal ka BP. The strong dry phase between 4.6 and 3.9 cal ka BP at Lonar Lake corroborates the hypothesis that severe climate deterioration contributed to the decline of the Indus Civilisation about 3.9 ka BP. Article in Journal/Newspaper North Atlantic Indian Institute of Geomagnetism (IIG): Repository Indian Pacific |
institution |
Open Polar |
collection |
Indian Institute of Geomagnetism (IIG): Repository |
op_collection_id |
ftindinstgeomagn |
language |
English |
topic |
Lake sediment Indian monsoon Holocene Climate reconstruction Stable carbon isotope Amino acid |
spellingShingle |
Lake sediment Indian monsoon Holocene Climate reconstruction Stable carbon isotope Amino acid Menzel, Philip Gaye, Birgit Mishra, Praveen K. Anoop, Ambili Basavaiah, N. Marwan, Norbert Plessen, Birgit Prasad, Sushma Riedel, Nils Stebich, Martina Wiesner, Martin G. Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
topic_facet |
Lake sediment Indian monsoon Holocene Climate reconstruction Stable carbon isotope Amino acid |
description |
We present the results of biogeochemical and mineralogical analyses on a sediment core that covers the Holocene sedimentation history of the climatically sensitive, closed, saline, and alkaline Lonar Lake in the core monsoon zone in central India. We compare our results of C/N ratios, stable carbon and nitrogen isotopes, grain-size, as well as amino acid derived degradation proxies with climatically sensitive proxies of other records from South Asia and the North Atlantic region. The comparison reveals some more or less contemporaneous climate shifts. At Lonar Lake, a general long term climate transition from wet conditions during the early Holocene to drier conditions during the late Holocene, delineating the insolation curve, can be reconstructed. In addition to the previously identified periods of prolonged drought during 4.6–3.9 and 2.0–0.6 cal ka that have been attributed to temperature changes in the Indo Pacific Warm Pool, several additional phases of shorter term climate alteration superimposed upon the general climate trend can be identified. These correlate with cold phases in the North Atlantic region. The most pronounced climate deteriorations indicated by our data occurred during 6.2–5.2, 4.6–3.9, and 2.0–0.6 cal ka BP. The strong dry phase between 4.6 and 3.9 cal ka BP at Lonar Lake corroborates the hypothesis that severe climate deterioration contributed to the decline of the Indus Civilisation about 3.9 ka BP. |
format |
Article in Journal/Newspaper |
author |
Menzel, Philip Gaye, Birgit Mishra, Praveen K. Anoop, Ambili Basavaiah, N. Marwan, Norbert Plessen, Birgit Prasad, Sushma Riedel, Nils Stebich, Martina Wiesner, Martin G. |
author_facet |
Menzel, Philip Gaye, Birgit Mishra, Praveen K. Anoop, Ambili Basavaiah, N. Marwan, Norbert Plessen, Birgit Prasad, Sushma Riedel, Nils Stebich, Martina Wiesner, Martin G. |
author_sort |
Menzel, Philip |
title |
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
title_short |
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
title_full |
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
title_fullStr |
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
title_full_unstemmed |
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events |
title_sort |
linking holocene drying trends from lonar lake in monsoonal central india to north atlantic cooling events |
publishDate |
2014 |
url |
http://14.139.123.141:8080/jspui/handle/123456789/771 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
_version_ |
1766122885778243584 |