HR: 11:35h
AN: G32A-06 INVITED     [Abstracts]
TI: Plumb Line Variations (PLV) and Geoid Deformations (GD): approaches be used to describe better the tomparal variation of a gravity field
AU: * Li, Z
EM: shaolzx@yahoo.com
AF: Shanghai Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China
AB: In order to decribe better the temporal variation of a gravity field where repeated gravimetric gravimetric observations have been performed, an approach of determinating the Plumb Line Variations (PLV) within the field, as well as the corresponding Geoid deformations (GD) there, has been introduced. The suggested approarch has been put into practice in using the repeated gravimatric observations of 1985-1998 performed at Beijing and Yunnan gravimetric Networks. After a comparison with the great earthquakes (M >5) nearby in the same period, it can be seen that the obtained PLV and GD is helpful both in understanding the temporal variations of a gravity field, as well as in the studying of an earthquake.
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