Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea
From temporal variation in delta sup(18) O in Globigerinoides ruber and G. sacculifer and geochemical indices of weathering/erosion (chemical index of alteration, Al and Ti), we infer rapid southwest monsoon (SWM) deterioration with dwindling fluvial and detrital fluxes at ca. 450-650, 1000 and 1800...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
John Wiley
2010
|
Subjects: | |
Online Access: | http://drs.nio.org/drs/handle/2264/3648 |
id |
ftnio:oai:dsr.nio.org:2264/3648 |
---|---|
record_format |
openpolar |
spelling |
ftnio:oai:dsr.nio.org:2264/3648 2023-05-15T17:34:14+02:00 Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea Chauhan, O.S. Vogelsang, E. Basavaiah, N. Kader, U.S.A. 2010 http://drs.nio.org/drs/handle/2264/3648 en eng John Wiley J_Quat_Sci_25_798.jpg Copyright © 2009 John Wiley & Sons, Ltd. This is a preprint of an article published in [Journal of Quaternary Science, vol.25(5); 798-807]” and URL: http://dx.doi.org/10.1002/jqs.1359 southwest monsoon Arabian Sea palaeoclimate reconstruction solar influx Journal Article 2010 ftnio 2012-08-25T20:09:44Z From temporal variation in delta sup(18) O in Globigerinoides ruber and G. sacculifer and geochemical indices of weathering/erosion (chemical index of alteration, Al and Ti), we infer rapid southwest monsoon (SWM) deterioration with dwindling fluvial and detrital fluxes at ca. 450-650, 1000 and 1800-2200 cal. a BP during the late Holocene. We have evaluated the role of solar influx (reconstructed) and high-latitude climate variability (archived in GRIP and GISP-2 cores) on SWM precipitation. Broadly, our delta sup(18) O climate reconstruction is concordant with GRIP and GISP-2, and supports a teleconnection through atmospheric connection between the SWM and the North Atlantic climate - albeit temporal extents of the Little Ice Age and Medieval Warm Period from high latitude are not entirely coeval. Moreover, there is a humid climate and enhanced precipitation during the terminal stages of the Little Ice Age. The medieval warming (ca. AD 800-1300) is not synchronous either, and is punctuated by an arid event centred at 1000 a BP. Although the delineation of the specific influence of solar influx on SWM precipitation is elusive, we surmise that SWM precipitation is a complex phenomenon and local orography along southwestern India may have a role on the entrapment of moisture from the southwest trade winds, when these hit land Article in Journal/Newspaper North Atlantic National Institute of Oceanography, India: Digital Repository Service (DRS@nio) |
institution |
Open Polar |
collection |
National Institute of Oceanography, India: Digital Repository Service (DRS@nio) |
op_collection_id |
ftnio |
language |
English |
topic |
southwest monsoon Arabian Sea palaeoclimate reconstruction solar influx |
spellingShingle |
southwest monsoon Arabian Sea palaeoclimate reconstruction solar influx Chauhan, O.S. Vogelsang, E. Basavaiah, N. Kader, U.S.A. Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
topic_facet |
southwest monsoon Arabian Sea palaeoclimate reconstruction solar influx |
description |
From temporal variation in delta sup(18) O in Globigerinoides ruber and G. sacculifer and geochemical indices of weathering/erosion (chemical index of alteration, Al and Ti), we infer rapid southwest monsoon (SWM) deterioration with dwindling fluvial and detrital fluxes at ca. 450-650, 1000 and 1800-2200 cal. a BP during the late Holocene. We have evaluated the role of solar influx (reconstructed) and high-latitude climate variability (archived in GRIP and GISP-2 cores) on SWM precipitation. Broadly, our delta sup(18) O climate reconstruction is concordant with GRIP and GISP-2, and supports a teleconnection through atmospheric connection between the SWM and the North Atlantic climate - albeit temporal extents of the Little Ice Age and Medieval Warm Period from high latitude are not entirely coeval. Moreover, there is a humid climate and enhanced precipitation during the terminal stages of the Little Ice Age. The medieval warming (ca. AD 800-1300) is not synchronous either, and is punctuated by an arid event centred at 1000 a BP. Although the delineation of the specific influence of solar influx on SWM precipitation is elusive, we surmise that SWM precipitation is a complex phenomenon and local orography along southwestern India may have a role on the entrapment of moisture from the southwest trade winds, when these hit land |
format |
Article in Journal/Newspaper |
author |
Chauhan, O.S. Vogelsang, E. Basavaiah, N. Kader, U.S.A. |
author_facet |
Chauhan, O.S. Vogelsang, E. Basavaiah, N. Kader, U.S.A. |
author_sort |
Chauhan, O.S. |
title |
Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
title_short |
Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
title_full |
Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
title_fullStr |
Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
title_full_unstemmed |
Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea |
title_sort |
reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern arabian sea |
publisher |
John Wiley |
publishDate |
2010 |
url |
http://drs.nio.org/drs/handle/2264/3648 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
J_Quat_Sci_25_798.jpg |
op_rights |
Copyright © 2009 John Wiley & Sons, Ltd. This is a preprint of an article published in [Journal of Quaternary Science, vol.25(5); 798-807]” and URL: http://dx.doi.org/10.1002/jqs.1359 |
_version_ |
1766132987269742592 |