日本Ms9.0地震前的重力高频扰动

摘要

We have chosen fourteen gPhone spring gravimeters of China Gravity Network to form two observation sections, and analyzed the observation records( in March 1 to 10) before the Ms9.0 earthquake near Japan east coast. The results indicate that a kind of bell-like of abnormal gravity disturbance occurring at all littoral observation stations and the magnitude of abnormal gravity disturbance attenuate with the distance from epicenter.%选取中国重力台网14台gPhone弹簧重力仪组成2个观测剖面,对日本本州东海岸附近海域Ms9.0特大地震前(3月1日至10日)的观测数据进行了分析.结果表明:沿海各台站统一出现了喇叭口状的"重力异常扰动"现象,且扰动异常随震中距的增加呈衰减趋势.