iMonsoon; Indian monsoon rainfall in the core convective region

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doi: 10.14379/iodp.sp.353.2014
Author(s): Clemens, Steven C.; Kuhnt, Wolfgang; LeVay, Leah J.
Author Affiliation(s): Primary:
Brown University, Geological Sciences, Providence, RI, United States
Christian-Albrechts-Universität zu Kiel, Germany
Texas A&M University, United States
Source: Scientific Prospectus (International Ocean Discovery Program), Vol.353, 81p. Publisher: International Ocean Discovery Program, College Station, TX, United States. ISSN: 2332-1385
Note: In English. 174 refs.
Summary: Scientific ocean drilling (Deep Sea Drilling Project [DSDP], Ocean Drilling Program [ODP], and Integrated Ocean Drilling Program) has never taken place in the Bay of Bengal north of 9°N. Thus, the core region of summer monsoon precipitation has never been investigated. DSDP Leg 22 (1974) and ODP Leg 121 (1989) drilled the southernmost region (5°-9°N), capturing the distal end of the summer monsoon influence. India's partnership in the International Ocean Discovery Program (IODP) provides an opportunity to investigate this key northern region. IODP Expedition 353 seeks to recover Upper Cretaceous-Holocene sediment sections that record erosion and runoff signals from river input to the Bay of Bengal as well as the resulting north-south surface water salinity gradient. Analysis of sediment sections from the Mahanadi Basin (northeast Indian margin), the Nicobar-Andaman Basin (Andaman Sea), and the northern Ninetyeast Ridge (southern Bay of Bengal) will be used to understand the physical mechanisms underlying changes in monsoonal precipitation, erosion, and run-off across timescales from millennial through tectonic. These sites will provide crucial new information within which to interpret differences among existing results from previous monsoon-themed drilling expeditions in the Arabian Sea (ODP Leg 117), the South China Sea (ODP Leg 184), and the Sea of Japan (Integrated Ocean Drilling Program Expedition 346). These goals directly address challenges in the "Climate and Ocean Change" theme of the IODP Science Plan.
Year of Publication: 2014
Research Program: IODP2 International Ocean Discovery Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atmospheric circulation; Atmospheric precipitation; Bay of Bengal; Cenozoic; Cores; Discharge; Drilling; Erosion; Expedition 353; Foraminifera; Geophysical methods; Geophysical profiles; Geophysical surveys; Indian Ocean; International Ocean Discovery Program; Invertebrata; Marine drilling; Marine sediments; Microfossils; Monsoons; Ocean circulation; Paleo-oceanography; Paleoclimatology; Paleohydrology; Planning; Protista; Quaternary; Rainfall; Runoff; Sediments; Seismic methods; Seismic profiles; Stream transport; Surveys; Tertiary; Transport
Coordinates: N052300 N190600 E0940000 E0844700
Record ID: 2014047018
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