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Millennial-scale variability in the ...

DeLong, Kimberly.

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Millennial-scale variability in the Indian monsoon and links to ocean circulation.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Millennial-scale variability in the Indian monsoon and links to ocean circulation./
Author:	DeLong, Kimberly.
Description:	91 p.
Notes:	Source: Masters Abstracts International, Volume: 54-05.
Contained By:	Masters Abstracts International54-05(E).
Subject:	Paleoclimate science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1591709
ISBN:	9781321835977

Millennial-scale variability in the Indian monsoon and links to ocean circulation.
DeLong, Kimberly.

Millennial-scale variability in the Indian monsoon and links to ocean circulation. - 91 p.

Source: Masters Abstracts International, Volume: 54-05.

Thesis (M.S.)--University of New Hampshire, 2015.

Millennial-scale variability in the Indian monsoon was temporally linked to changes in global ocean circulation during the last glacial period, as evidenced by planktic-benthic foraminiferal stable isotope and trace element results from an intermediate depth sediment core from the northwestern Bay of Bengal (Core NGHP-01-19B; 18°58'N, 85°39'E; 1,422 m). Paired planktic foraminiferal Mg/Ca and delta18Oc of G. ruber constrain sea surface temperatures and isolate millennial-scale variations in the delta18O of surface waters (delta 18Osw) which resulted from changes in river runoff in the northwestern Bay. Concurrently with low delta18Osw events, benthic foraminiferal delta13C of Cibicidoides spp. decreased, suggesting an increased influence of an aged water mass at this intermediate depth site during the low salinity events. Benthic foraminiferal Cd/Ca of H. elegans supports the identification of this water mass as aged Glacial Antarctic Intermediate Water (GAAIW). Lagged correlation analysis (r= 0.41) indicates that changes in subsurface properties led changes in surface properties by an average of 380 years. The implication is that Southern Hemisphere climate exerted a controlling influence on the Indian monsoon during the last glacial period.

ISBN: 9781321835977Subjects--Topical Terms:

3173835
Paleoclimate science.

Millennial-scale variability in the Indian monsoon and links to ocean circulation.
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100 1 $a DeLong, Kimberly. $3 3187701
245 1 0 $a Millennial-scale variability in the Indian monsoon and links to ocean circulation.
300 $a 91 p.
500 $a Source: Masters Abstracts International, Volume: 54-05.
500 $a Adviser: Rosemarie E. Came.
502 $a Thesis (M.S.)--University of New Hampshire, 2015.
520 $a Millennial-scale variability in the Indian monsoon was temporally linked to changes in global ocean circulation during the last glacial period, as evidenced by planktic-benthic foraminiferal stable isotope and trace element results from an intermediate depth sediment core from the northwestern Bay of Bengal (Core NGHP-01-19B; 18°58'N, 85°39'E; 1,422 m). Paired planktic foraminiferal Mg/Ca and delta18Oc of G. ruber constrain sea surface temperatures and isolate millennial-scale variations in the delta18O of surface waters (delta 18Osw) which resulted from changes in river runoff in the northwestern Bay. Concurrently with low delta18Osw events, benthic foraminiferal delta13C of Cibicidoides spp. decreased, suggesting an increased influence of an aged water mass at this intermediate depth site during the low salinity events. Benthic foraminiferal Cd/Ca of H. elegans supports the identification of this water mass as aged Glacial Antarctic Intermediate Water (GAAIW). Lagged correlation analysis (r= 0.41) indicates that changes in subsurface properties led changes in surface properties by an average of 380 years. The implication is that Southern Hemisphere climate exerted a controlling influence on the Indian monsoon during the last glacial period.
590 $a School code: 0141.
650 4 $a Paleoclimate science. $3 3173835
650 4 $a Marine geology. $3 3173821
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710 2 $a University of New Hampshire. $b Oceanography. $3 3187702
773 0 $t Masters Abstracts International $g 54-05(E).
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1591709