Influence of Jokulhlaups on Deep-sea Sedimentation Adjacent to the Iceland Hotspot
Influence of Jokulhlaups on Deep-sea Sedimentation Adjacent to the Iceland Hotspot
批准号:
9402296
负责人:
Steven Carey
金额:
$19.78万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1995
资助国家:
美国
项目状态:
已结题
起止时间:
1995-02-15 至 1998-07-31
中文摘要
[402296] [qh] Pis将调查被称为joekulhlaups的灾难性洪水的记录,这种洪水是由冰岛冰下喷发或冰坝湖泊的排水引起的,这些火山碎屑物质被引入海洋,并在海底风扇上以浊积物的形式沉积。陆基joekulhlaup事件以及深海岩心的样本也将被检查。氧同位素地层学将提供年代学。这些发现将有助于解决洪水事件的历史,并有助于建立火山热点地区(如冰岛)周围的沉积模型,这些地区受到冰川循环的强烈影响。***
英文摘要
9402296 Carey The Pis will investigate the record of the catastrophic floods, known as joekulhlaups, generated by subglacial eruptions or drainage of ice-dammed lakes on Iceland that cause the introduction of volcaniclastic material into the ocean where it is deposited as turbidites on submarine fan. Samples of land-based joekulhlaup events as well from deep sea cores will be examined. Oxygen isotopic stratigraphy will provide chronology. The findings will help resolve the history of flood events and contribute to the modeling of sedimentation around a volcanic hotspot such as Iceland that is strongly influenced by glacial cycles. ***
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