International Symposium on Fast Glacier Flow

摘要：首席研究员向南极冰川学和北极自然科学项目申请资助，以支持几位外国科学家和美国研究生参加关于冰川快速流动的国际研讨会。1986年，查普曼召开了一次关于冰川快速流动的会议，聚集了积极参与研究汹涌和快速潮汐冰川和冰流流动的科学家。会议阐明了若干突出的问题，这些问题有助于在南极和北极进行许多跨学科研究。自1986年以来，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理解有了许多重要的新进展。例如，南极西部冰盖倡议将高度可变形的冰下till和边缘剪切带冰动力学的作用作为快速冰川运动的重要过程带到了最前沿。这项研究为研究北极冰川的激增提供了新的方法。对格陵兰出口冰川和阿拉斯加潮汐冰川的详细研究对于确定快速冰川流动和冰山崩解在冰盖质量平衡中的作用，以及它们在冰盖崩解中的作用以及它们通过海因里希型事件对海洋环流的影响具有重要意义。新的遥感技术已被用于阐明南极和北极冰流流动和涌浪型冰川的特征，包括在格陵兰岛东北部发现一个大冰流，以及南极洲松岛/思韦茨流域可能迅速减少。由于这些令人兴奋的新进展，首席研究员将于2002年在阿拉斯加的雅库塔主持由国际冰川学学会主办的快速冰川流动国际研讨会。雅库塔位于北美最大、最活跃的潮汐和汹涌的冰川之中。会议将由阿拉斯加费尔班克斯大学地球物理研究所组织。本提案寻求资金以部分支付组织和举办本次研讨会的费用。把南极和北极科学家聚集在一起，研究快速冰运动的这些不同方面，应该促进对当前知识状况的激烈讨论和思想交流。研讨会将集中讨论冰川快速流动中最紧迫的未解问题，并讨论国际跨学科研究的未来方向。在研讨会上口头和海报展示的同行评议论文将发表在《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.