SST: Sensor Network for 3D Geophysical Imaging of Glaciers and Ice Sheets

SST：用于冰川和冰盖 3D 地球物理成像的传感器网络

• 批准号: 0427714
• 负责人: Sridhar Anandakrishnan
• 金额: --
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-05-01 至 2009-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0427714&HistoricalAwards=false
• 关键词: SST; Sensor; Network; 3D; Geophysical

There is a serious lack of knowledge of physical processes within and beneath glaciers and ice sheets, at a time when modeling needs are acute for predicting ice sheet and glacier movement, and associated sea-level changes. Under this grant, a network of wirelessly interconnected geophysical sensors (so-called "geobricks") will be developed that will simultaneously include: seismic reflection and refraction imaging, radar imaging at high- and low-frequencies, and a dense array of continuously operating GPS receivers. Along with the "geobricks", a source, both radar and seismic, will be developed which can be towed by snowmobiles. With this network, measurements can be made of: basal roughness, subglacial sedimentary and hydrologic conditions, englacial crystal fabric, accumulation rate variability, and the "4D" (time and space) variability of the ice sheet flow field

在预测冰盖和冰川运动及相关海平面变化的建模需求十分迫切的时候，人们严重缺乏冰川和冰盖内部和之下的物理过程的知识。根据这笔赠款，将开发一个无线互连的地球物理传感器网络(所谓的“地球屏障”)，该网络将同时包括：地震反射和折射成像、高频和低频雷达成像以及密集的连续运行的全球定位系统接收器阵列。除了“地砖”，还将开发一种可由雪地摩托拖曳的雷达和地震震源。利用这个网络，可以测量冰盖流场的基本粗糙度、冰下沉积和水文条件、冰川晶体组构、堆积率变异性和“4维”(时间和空间)变异性。