The Behavior and Effects of Jokulhlaup Discharge into the Sea

Jokulhlaup 排放入海的行为和影响

• 批准号: 9711461
• 负责人: Steven Carey
• 金额: $ 11.35万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9711461&HistoricalAwards=false
• 关键词: Behavior; Effects; Jokulhlaup; Discharge; into

In the fall of 1996 a subglacial eruption beneath the Vatnajoekull icecap triggered the largest joekulhlaup of this century of Iceland. The flood produced a large-scale sediment plume in the ocean floor. A field expedition was mounted with supplemental funds to sample and study the products of this event, including, sediment and water samples. New funds will be used to continue the analyses of this unique data set to: 1) characterized the sedimentation of particles from the event as they traveled to the sea and were dispersed, 2) examine the nature of particle laden plume in the water and its dispersal, and 3) investigate the dynamic nature of the floods as they enter the ocean. The study will shed new light on the behavior of the joekulhlaup flows, their dispersal and the sedimentary processes associated with them in the marine environment.

1996年秋天，瓦特纳约库尔冰盖下的一次冰下喷发引发了冰岛本世纪最大的冰盖喷发。洪水在海底产生了大规模的沉淀物羽流。利用补充资金开展了一次实地考察，对这次活动的产品进行采样和研究，包括沉积物和水样。新的资金将用于继续对这一独特的数据集进行分析：1)表征事件中的颗粒在运往海洋并被分散时的沉积，2)检查水中携带颗粒的羽流的性质及其扩散，以及3)调查洪水进入海洋时的动态性质。这项研究将对乔库拉普流的行为、它们的扩散以及与它们相关的海洋环境中的沉积过程提供新的线索。