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卫星重磁技术及其应用.ppt

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卫星重磁技术及其应用.ppt

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卫星重磁技术及其应用.ppt

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文档介绍:卫星重磁技术及其应用
中国地质大学(武汉)
地球物理与空间信息学院
张世晖
空间技术与信息学术讨论会
卫星重力最新进展
CHAMP
GRACE
GFZ-1
CHAMP卫星简介
CHAMP (CHAllenging Minisatellite Payload) is a German small satellite mission for geoscientific and atmospheric research and applications, managed by GFZ.
generate for the first time simultaneously highly precise gravity and ic field measurements over a 5 years period.
Grace, Launched in March, 2002
地球卫星重力场进展
: Gravity anomaly map derived from tracking data of 30 Earth orbiting satellites over more than 20 years (GRIM5-S1 model)
: Gravity anomaly map derived from 16 months of CHAMP data only (EIGEN-CHAMP02S model)
: Gravity anomaly map derived from 39 days of GRACE data only (EIGEN-GRACE01S model)
GRACE Gravity Model 01 (GGM01) - Released July 21, 2003
GRACE Gravity Model 01 based on 111 days of GRACE data
Gravity Model based on decades of tracking geodetic satellites
This model is between 10 to 50 times more accurate than all previous Earth gravity models at the long & medium wavelengths
Mantle gravity anomalies [mGal] calculated by subtracting from observed gravity (EIGEN-GRACE01S) the crustal gravity effect including topography (bathymetry) and crustal density variations down to the Moho boundary
卫星测高与卫星重力