报 告 人：C.K. Shum 沈嗣钧
报告时间：2012年1月18日9:00~10:00
地 点：二楼会议室
报告题目：Space Gravimetry: Interdisciplinary Earth Science Research
报告摘要：
Monitoring, understanding, and quantifying global water cycle budget in light of global climate change represents an important scientific research topic with significant societal impact. The NASA/GFZ Gravity Recovery and Climate Experiment (GRACE) twin-satellite mission, launched in March 2002, is designed to measure small mass changes over a large spatial scale, using primarily a microwave K-band low-low inter-satellite ranging (KBR) system between the GRACE spacecrafts at μm precision, and represents a revolutionary observational system to able to study mass transports of the Earth and thus able to address open science questions in cross disciplinary Earth sciences. GRACE is currently measuring the Earth’s mass redistribution with a spatial resolution longer than 400 km and monthly resolution. Future GRACE-2 instrument advancement include the use of laser interferometry satellite-to-satellite ranging with several order precision improvement over KBR, optimal orbit design and the potential with multiple GRACE-2 systems will significantly improve the resolution and accuracy of mass change solutions. This presentation highlights contemporary Earth science research topics using GRACE and potential of addressing overarching interdisciplinary Earth science research topics using GRACE-2, including ice-sheet and glacier mass balance, basin-scale hydrology, ocean mass sea-level variations, geodynamics, and earthquakes.
请在校的全体老师和同学们准时参加。
引力中心
2012年1月15日
