HR: 1400h
AN: G33B-08 [Abstracts]
TI: The Error Analysis of Global Gravity Field Models according to the Earthquake Monitoring
AU: * Zou, Z
EM: lihuidz@public.wh.hb.cn
AF: Institute of Seismology, CEA, Institute of Seismology, CEA, Wuhan, 430071, China
AU: * Zou, Z
EM: lihuidz@public.wh.hb.cn
AF: Crustal Movement Laboratory, Institute of Seismology, CEA, Wuhan, 430071, China
AU: Li, H
EM: lihuidz@public.wh.hb.cn
AF: Institute of Seismology, CEA, Institute of Seismology, CEA, Wuhan, 430071, China
AU: Li, H
EM: lihuidz@public.wh.hb.cn
AF: Crustal Movement Laboratory, Institute of Seismology, CEA, Wuhan, 430071, China
AU: Dan, W
EM: lihuidz@public.wh.hb.cn
AF: Institute of Seismology, CEA, Institute of Seismology, CEA, Wuhan, 430071, China
AU: Dan, W
EM: lihuidz@public.wh.hb.cn
AF: Crustal Movement Laboratory, Institute of Seismology, CEA, Wuhan, 430071, China
AB:
Since the GRACE mission was launched in March 2002, there have been a lot of GRACE observational data and
products released, including the time-variable global gravity field models with the maximum degree to 120, and 1
month time resolution. The purpose of this paper is how to use these global gravity field model products to
analyze the earthquake monitoring according to the spatial resolution and the required precision.
Firstly, this paper introduces a lot of global gravity field models, based CHAMPAGRACE satellite data, and the
method of computing gravity anomaly error from these models. Secondly, the gravity anomaly errors of the above
gravity field models are computed and compared. Thirdly, the feasibility of earthquake monitoring by low-Earth
orbiting satellites according to these results is analyzed. Finally, the maximum degrees of these gravity field
models are decided for the requirement of earthquake monitoring.
Key wordsFgravity field model, error analysis, earthquake ,CHAMP , GRACE
DE: 1200 GEODESY AND GRAVITY
DE: 1211 Non-tectonic deformation
DE: 1217 Time variable gravity (7223, 7230)
DE: 1219 Gravity anomalies and Earth structure (0920, 7205, 7240)
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
SC: Geodesy [G]
MN: 2007 Joint Assembly