Collaborative Research: A High-resolution Record of Productivity and/or Ventilation of the Northeastern Pacific from Soledad Basin, Baja California
Collaborative Research: A High-resolution Record of Productivity and/or Ventilation of the Northeastern Pacific from Soledad Basin, Baja California
批准号:
0214221
负责人:
Alexander van Geen
金额:
$31.64万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2002
资助国家:
美国
项目状态:
已结题
起止时间:
2002-09-01 至 2005-08-31
中文摘要
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英文摘要
This study will use multiproxy study of cores from the Soledad Basin off Baja CA to determine if bottom water oxygen changes over the last 10,000 years are caused primarily by productivity changes in surface waters or changes in ventilation of subsurface waters. Proxies to be measured include planktic foraminifer assemblages, oxygen isotope ratio of Globigerina bulloides and N. pachyderma, sediment Mo abundance, and Mg/Ca in benthic foraminifers. Chronology will be provided by AMS 14C and 210Pb. Sample resolution for most proxies will be 100 years. Mo measurements and sea surface temperature estimates will be done at multidecadal sampling resolution.
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Coastal Upwelling Along the Western Americas: Past, Presentand Future
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Instrumentation to Study Aspects of Cadmium and Phosphate Geochemistry Relevant to Paleoceanography and Physical Oceanography
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