SGER: Geological and Geomorphic Investigations of Impacts of Rapid Fall of Lake Powell at the Colorado River Delta
SGER: Geological and Geomorphic Investigations of Impacts of Rapid Fall of Lake Powell at the Colorado River Delta
批准号:
0447345
负责人:
James Evans
金额:
$0.98万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2004
资助国家:
美国
项目状态:
已结题
起止时间:
2004-09-01 至 2005-02-28
中文摘要
由于美国西部长达八年的干旱,鲍威尔湖的水线降至历史最低点,暴露出过去37年来在科罗拉多河上游入海口发育的三角洲。这提供了一个短期和无与伦比的机会,可以研究湖泊水位下降引起的沉积物变形过程,大河在短期内对显著基准面下降的响应,沉积物如何从三角洲输送到湖泊,以及建立三角洲沉积物分布的基线。PIS计划让一个多学科的科学家小组来调查这一短暂的机会。
英文摘要
Due to the eight year drought in the western United States, the water line for Lake Powell has dropped to a record low exposing the delta developed over the last 37 years at the upstream entrance of the Colorado River into the lake. This provides a short term and unparalleled opportunity to study the processes of sediment deformation caused by lake-level fall, the response of a large river to a significant base level drop over a short period of time, how sediments are transported from the delta to the lake, and to establish a base line of the distribution of sediments at the delta. PIS plan to involve a multidisciplinary group of scientists to investigate this ephemeral opportunity.
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依托单位:
海外基金