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Monsoon variability record from the Indian ocean
High resolution foraminiferal record from the Maldives Ridge during the Late Pleistocene (past 151 Kyr)
Taschenbuch von Soma Baranwal
Sprache: Englisch

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Beschreibung
The benthic foraminiferal population from Recent sediments of the Indian Ocean can be divided into two faunal provinces ¿ Province A and B, based on their relation with the water mass properties. Province A occupies northwestern Indian Ocean (northwestern Arabian Sea)and is dominated by foraminifera characteristic of low oxygen and high organic food flux. Province B covers southern, southeastern and eastern parts of the Indian Ocean and suggests well-oxygenated, cold deep water with low (oligotrophic) and pulsed food supply. Benthic foraminiferal diversity at Hole 716A is low during intervals of sustained flux of organic carbon with low oxygen levels (during intervals of intense SW monsoon) and vice versa. Higher populations of planktic foraminifer Globigerina bulloides (a well known SW monsoon proxy) are observed during intervals of intense SW monsoon. The surface and deep water conditions at Hole 716A are coupled probably due to the shallow water depth (533 m) of this hole. Spectral analysis show prominent peaks around 40, 30, 24, 20, 6, 1, 0.8 and 0.7 Kyr, thus signifying suborbital and orbital (precession-linked) forcing of the summer monsoon.
The benthic foraminiferal population from Recent sediments of the Indian Ocean can be divided into two faunal provinces ¿ Province A and B, based on their relation with the water mass properties. Province A occupies northwestern Indian Ocean (northwestern Arabian Sea)and is dominated by foraminifera characteristic of low oxygen and high organic food flux. Province B covers southern, southeastern and eastern parts of the Indian Ocean and suggests well-oxygenated, cold deep water with low (oligotrophic) and pulsed food supply. Benthic foraminiferal diversity at Hole 716A is low during intervals of sustained flux of organic carbon with low oxygen levels (during intervals of intense SW monsoon) and vice versa. Higher populations of planktic foraminifer Globigerina bulloides (a well known SW monsoon proxy) are observed during intervals of intense SW monsoon. The surface and deep water conditions at Hole 716A are coupled probably due to the shallow water depth (533 m) of this hole. Spectral analysis show prominent peaks around 40, 30, 24, 20, 6, 1, 0.8 and 0.7 Kyr, thus signifying suborbital and orbital (precession-linked) forcing of the summer monsoon.
Über den Autor
I am presently working at the Geological Survey of Norway (NGU),Trondheim. I completed my PhD from the Department of Geology andGeophysics, Indian Institute of Technology, Kharagpur, Indiathrough a NET fellowship of CSIR, India. My research interestsinclude micropaleontology, stratigraphy, paleoclimatology andpaleoceanography.
Details
Erscheinungsjahr: 2010
Fachbereich: Paläontologie
Genre: Geowissenschaften
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Inhalt: 236 S.
ISBN-13: 9783843377669
ISBN-10: 3843377669
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Baranwal, Soma
Hersteller: LAP LAMBERT Academic Publishing
Maße: 220 x 150 x 15 mm
Von/Mit: Soma Baranwal
Erscheinungsdatum: 30.11.2010
Gewicht: 0,369 kg
Artikel-ID: 107201280
Über den Autor
I am presently working at the Geological Survey of Norway (NGU),Trondheim. I completed my PhD from the Department of Geology andGeophysics, Indian Institute of Technology, Kharagpur, Indiathrough a NET fellowship of CSIR, India. My research interestsinclude micropaleontology, stratigraphy, paleoclimatology andpaleoceanography.
Details
Erscheinungsjahr: 2010
Fachbereich: Paläontologie
Genre: Geowissenschaften
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Inhalt: 236 S.
ISBN-13: 9783843377669
ISBN-10: 3843377669
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Baranwal, Soma
Hersteller: LAP LAMBERT Academic Publishing
Maße: 220 x 150 x 15 mm
Von/Mit: Soma Baranwal
Erscheinungsdatum: 30.11.2010
Gewicht: 0,369 kg
Artikel-ID: 107201280
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