Space Geodesy and its Applications in Earth Sciences: Asia-Pacific Space Geodynamics Project (APSG) Symposium

IWG3D
(APSG co-sponsor) Gravity, Time-Variable Gravity, and Earth Rotation Dynamics

Convenor
H.T. Hsu, Institute of Geodesy and Geophysics, Wuhan
hsu@asch.whigg.ac.cn

C. Hwang, National Chiao-Tung Univ., Hsinchu
hwang@geodesy.cv.nctu.edu.tw

Brief Description
Gravity field and geoid modeling has seen great advances over the decades. In recent years, technology advances have further allowed precise observations of time-variable gravity. The latter include point measurements from surface gravimeters (such as fixed superconducting gravimeters and revisiting absolute gravimeters), as well as space-based global measurements (including satellite-laser-ranging, and new space missions of CHAMP and GRACE). The time-variable gravity signifies redistribution of mass in or on the Earth. Closely related to the latter is the Earths rotation variations due to angular momentum transports among Earth components. This half-day session welcomes papers dealing with the acquisition, processing, analysis, modeling, and interpretation of the observational data and their implications in the Earth system studies, including but not limited to the Asia-Pacific region.