U.S.-Sweden-Norway Cooperative Research: Measurement and Interpretation of Postglacial Rebound-Induced Crustal Deformation Rates

这个为期一年的奖项支持美国-瑞典-挪威合作社 史密森天体物理学的詹姆斯·戴维斯 位于马萨诸塞州和伯恩特O的剑桥天文台。龙南 查尔默斯大学的昂萨拉空间天文台 技术，Onsala，瑞典。 研究的目的是 测量三维地壳运动， 位于瑞典和挪威（芬诺斯坎迪亚）。 估计数 地壳速度将被用来确定粘度的 芬诺斯堪的纳维亚之下的地幔并纠正对 与局部地壳垂直运动有关的海平面变化。 了解地幔的粘性是理解 地幔对流是板块构造运动的驱动力。 需要估算地壳运动引起的海平面变化 用于确定全球海平面变化， 全球变暖 卫星测量技术将成为 用于估计地壳速度。 该项目利用了 美国和瑞典的研究小组以及瑞典与 北欧理事会资助机构。 美国调查人员已经 在处理空间大地测量数据方面的丰富经验， 利用这些数据来估计地球物理参数。 这是 再加上瑞典集团对该地区的了解。 他们将计划调查，现场勘察和协调 北欧理事会的努力。

This one-year award supports U.S.-Sweden-Norway cooperative research between James Davis of the Smithsonian's Astrophysics Observatory in Cambridge, Massachusetts and Bernt O. Ronnang of the Onsala Space Observatory, Chalmers University of Technology, Onsala, Sweden. The objective of the research is to take measurements of three-dimensional crustal motion at locations in Sweden and Norway (Fennoscandia). The estimates of crustal velocity will be used to determine viscosity of the Earth's mantle beneath Fennoscandia and to correct estimates of sea-level change associated with local vertical crustal motion. Knowledge of the mantle's viscosity is required for understanding mantle convection, the driving force of plate tectonic motion. The estimates of sea-level change for crustal motion is required for determining global sea-level change, an important gauge of global warming. Satellite surveying techniques are to be employed for estimating crustal velocity. The project takes advantage of complementary expertise of the U.S. and Swedish research groups and Swedish coordination with the Nordic Council funding agencies. The U.S. investigators have extensive experience in the processing of space geodetic data and using this data to estimate geophysical parameters. This is complemented by the Swedish group's knowledge of the region. They will plan the surveys, the site reconnaissance and coordinate the effort with the Nordic Council.