Gravity Observations During 22 July 2009 Total Solar Eclipse in Hubei Province

Gravity observations have been made using superconducting gravimeter of Jiufeng observation station and LCR-G and LCR-ET gravimeters of Shayang County,during total solar eclipse,which took place along Yangzi River on July 22,2009.We firstly analyzed the amplitude change of gravity residues,which deducted influences of solid Earth tide and pressure.No "gravity anomaly valleys" of abnormal amplitude were observed from the gravity residuals.The gravity residues of LCR-G same with that of LCR-ET gravimeters,whose solid earth tide influences were deducted by methods of digital filter and polynomial fitting.The processing of observed gravity data and analysis proved that no gravity anomaly valleys were found during the total solar eclipse of 2009.