An Analysis of Mineral Aerosol Transport from Asia to the North Pacific During the Last 18,000 Yr.
An Analysis of Mineral Aerosol Transport from Asia to the North Pacific During the Last 18,000 Yr.
批准号:
8716432
负责人:
Margaret Leinen
金额:
$19.25万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1988
资助国家:
美国
项目状态:
已结题
起止时间:
1988-03-01 至 1991-02-28
中文摘要
这项研究涉及在过去的18000年里矿物粉尘从亚洲干旱地区向开阔的北太平洋的运输。将对选定的深海岩心进行新的分析,以提高分辨率和数据的覆盖范围。气象运输模式将用于评估矿物粉尘运输和沉积的纬度分布随时间的变化,源区可能的变化,以及运输速度。这些计算将基于COHMAP项目下获得的NCAR社区气候模式模拟的气候场。将输运结果与沉积学结果进行比较,分析近18000年来矿物学的纬向分布、粒度分布和质量堆积速率。气候学和沉积学研究将使我们能够评估运输模式的能力,并改进我们对根据地质证据推断出的气候变化的理解。
英文摘要
A B S T R A C T This research concerns the transport of mineral dust from the arid regions of Asia to the open North Pacific Ocean over the last 18,000 years. New analysis will be carried out on selected deep sea cores to improve the resolution and the coverage of the data. Meteorological models of transport will be used to assess the variation with time of the latitudinal distribution of mineral dust transport and deposition, the likely variation in the source areas, and the speed of transport. These calculations will be based upon climatological fields simulated by NCAR's Community Climate Model obtained under the COHMAP project. The transport results will be compared with sedimentological results on the latitudinal distribution of the minerology, grain size distribution and mass accumulation rates over the past 18,000 years. Together, the climatological and sedimentological research will allow an assessment of the capability of transport models and refine our understanding of climate variations deduced from geological evidence.
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Ship Operations
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批准号:9625588
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项目类别:Continuing Grant
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资助金额:$135.68万
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财政年份:1996
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负责人:Margaret Leinen
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依托单位:
R/V ENDEAVOR Mid-life Refit
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批准号:9223884
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项目类别:Standard Grant
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资助金额:$242.75万
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财政年份:1993
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负责人:Margaret Leinen
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依托单位:
Ship Operations
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批准号:9304963
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项目类别:Continuing Grant
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资助金额:$301.02万
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财政年份:1993
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负责人:Margaret Leinen
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依托单位:
A Proposal for Management and Scientific Service Operation in Support of the US JGOFS Equatorial Pacific Process Study
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批准号:9022704
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项目类别:Standard Grant
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资助金额:$16.02万
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财政年份:1991
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负责人:Margaret Leinen
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依托单位:
Development of a Reference Base for Eolian Sedimentary Studies in the Pacific and to Apply it to Studies of Quaternary Eolian Sedimentation in the Equatorial Pacific
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批准号:9102385
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项目类别:Continuing Grant
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资助金额:$20.0万
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财政年份:1991
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负责人:Margaret Leinen
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依托单位:
Core and Non-Core Measurements of Sediment Composition and Burial Rate and to Evaluate the Response of these Parametersto Climate Change of Time Scale of 104-105 Years
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批准号:9022749
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项目类别:Continuing Grant
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资助金额:$25.62万
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财政年份:1991
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负责人:Margaret Leinen
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依托单位:
Ship Operations
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批准号:9000246
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项目类别:Continuing Grant
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资助金额:$427.85万
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财政年份:1990
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负责人:Margaret Leinen
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依托单位:
Detailed Modeling of Cenozoic Sedimentation in the North Pacific
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批准号:9000410
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项目类别:Continuing Grant
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资助金额:$3.32万
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财政年份:1990
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负责人:Margaret Leinen
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依托单位:
A Conference: Paleoclimatology and Paleometeorology - Modern and Past Patterns of Global Atmospheric Transport
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批准号:8800044
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项目类别:Standard Grant
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资助金额:$1.57万
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财政年份:1987
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负责人:Margaret Leinen
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依托单位:
Northeast Asian Climatic Variability Over the Last 300,000 Years
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批准号:8713216
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项目类别:Continuing Grant
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资助金额:$5.99万
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财政年份:1987
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负责人:Margaret Leinen
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依托单位:
Aging of a Hydrothermal System
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批准号:8600822
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项目类别:Continuing Grant
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资助金额:$24.47万
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财政年份:1986
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负责人:Margaret Leinen
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依托单位:
Pelagic Clay Deposition in the North Pacific: Stratigraphic, Magnetic, and Climatic Studies
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批准号:8511896
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项目类别:Continuing Grant
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资助金额:$27.57万
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财政年份:1985
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负责人:Margaret Leinen
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依托单位:
Doctoral Dissertation Research Support: Chemistry and Mineralogy of the Iberian Basin Nepheloid Layer
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批准号:8415719
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项目类别:Standard Grant
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资助金额:$1.52万
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财政年份:1985
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负责人:Margaret Leinen
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依托单位:
Hydrothermal Sedimentation at the East Pacific Rise: Fine Scale Stratigraphy
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批准号:8411054
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项目类别:Standard Grant
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资助金额:$6.32万
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财政年份:1984
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负责人:Margaret Leinen
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依托单位:
Juan de Fuca Ridge Sediment Studies: Hydrothermal Sedimen- tation and Constraints on Tectonic Activity
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批准号:8310695
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项目类别:Continuing Grant
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资助金额:$28.67万
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财政年份:1983
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负责人:Margaret Leinen
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依托单位:
An Evaluation of Quantitative Techniques For Determining Biogenic Opal Content and Dissolution in Deep Sea Sediments
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批准号:8200388
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项目类别:Standard Grant
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资助金额:$4.0万
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财政年份:1982
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负责人:Margaret Leinen
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依托单位:
Quantitative Determination of Glacial and Post-Glacial Atmospheric Circulation Over the North Pacific Ocean
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批准号:8116301
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项目类别:Continuing Grant
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资助金额:$7.69万
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财政年份:1982
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负责人:Margaret Leinen
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依托单位:
Project Specmap: Mapping Variations in Ocean Spectra Over a Frequency Range 10-5 to 10-1 Cycles Per Year
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批准号:8018896
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项目类别:Continuing Grant
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资助金额:$18.8万
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财政年份:1981
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负责人:Margaret Leinen
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依托单位:
海外基金