International Symposium on Fast Glacier Flow

Echelmeyer首席研究员正在向南极冰川学和北极自然科学计划申请资金，以支持几位外国科学家和美国研究生参加快速冰川流国际研讨会。 1986年，查普曼快速冰川流动会议召开，聚集了积极参与研究涌动和快速冰川流动以及冰流流动的科学家。这次会议阐明了几个突出的问题，这些问题促成了在南极和北极进行的许多跨学科研究。自1986年以来，在我们对快速冰川流动的性质和过程及其对全球气候和海洋系统的影响的认识方面有了许多重要的新发展。 例如，西南极冰盖倡议将高度变形的冰下冰碛和边缘剪切带冰的动态作为冰川快速运动的重要过程，突出了其作用。 这项研究为研究北极冰川的涌动提供了新的方法。 对格陵兰出口冰川和阿拉斯加冰川的详细研究对于确定冰川快速流动和冰山崩解在冰盖质量平衡中的作用，以及它们在冰盖解体中的作用和它们通过海因里希型事件对海洋环流的影响都很重要。 新的遥感技术已被用来说明南极和北极冰流流动和冰涌型冰川的特征，包括查明格陵兰东北部的一个大冰流和南极洲松岛/思韦茨流域可能迅速缩小的情况。 由于这些令人兴奋的新发展，首席研究员将于2002年在阿拉斯加雅库塔特主办一次由国际冰川学会主办的快速冰川流动国际研讨会。 雅库塔特位于北美最大、最活跃的冰川和涌动的冰川之间。 会议将通过阿拉斯加大学-费尔班克斯地球物理研究所组织。 这项建议寻求资金以支付组织和举办这次专题讨论会的部分费用，将研究快速冰运动这些不同方面的南极和北极科学家聚集在一起，应能促进对目前知识状况的积极讨论和意见交流。 研讨会将集中讨论快速冰川流动的最紧迫的悬而未决的问题，导致国际，跨学科研究的未来方向的讨论。 在专题讨论会上口头和海报介绍的同行评审论文将发表在《冰川学年鉴》上。

AbstractOPP-0119714EchelmeyerThe Principal Investigator is requesting funds from the Antarctic Glaciology and Arctic Natural Sciences Programs to support the participation of several foreign scientists and U.S. graduate students at an International Symposium on Fast Glacier Flow. In 1986, a Chapman Conference on Fast Glacier Flow was held to bring together scientists who were actively involved in the study of surging and fast tidewater glaciers, and ice stream flow. The meeting illuminated several outstanding problems which contributed to numerous inter-disciplinary studies in the Antarctic and Arctic.Since 1986, there have been many important new developments in our understanding of the properties and processes involved in fast glacier flow and of its consequences in the global climate and ocean systems. For example, the West Antarctic Ice Sheet initiative has brought the roles of highly deformable subglacial till and marginal shear-zone ice dynamics to the forefront as important processes in fast glacier motion. This research has led to new approaches in the study of surging glaciers in the Arctic. Detailed studies of outlet glaciers in Greenland and tidewater glaciers in Alaska have been important in determining the roles of fast glacier flow and iceberg calving in ice sheet mass balance, as well as their roles in ice sheet disintegration and their effects on ocean circulation through Heinrich-type events. New remote sensing techniques have been used to illuminate features of ice stream flow and surge-type glaciers in both Antarctica and the Arctic, including the identification of a large ice stream in northeast Greenland and possible rapid drawdown of the Pine Island/Thwaites drainage basins in Antarctica. Because of these exciting new developments, the Principal Investigator will host an International Symposium on Fast Glacier Flow in 2002 sponsored by the International Glaciological Society in Yakutat, Alaska. Yakutat is located among the largest and most active tidewater and surging glaciers in the North America. The meeting will be organized through the Geophysical Institute, University of Alaska - Fairbanks. This proposal seeks funds to partially defray the cost of organizing and carrying out this symposium.Bringing together Antarctic and Arctic scientists working on these different aspects of rapid ice motion should promote vigorous discussion and an exchange of ideas on the current state of knowledge. The symposium will focus on the most pressing unanswered questions of fast glacier flow, leading to discussions of future directions for international, inter-disciplinary research. Peer-reviewed papers resulting from oral and poster presentations at the symposium will be published in the Annals of Glaciology.