摘要
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。
We have chosen fourteen gPhone spring gravimeters of China Gravity Network to form two observation sections,and analyzed the observation records（in March 1 to10） before the M s9.0 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.
出处
《大地测量与地球动力学》
CSCD
北大核心
2011年第2期4-8,共5页
Journal of Geodesy and Geodynamics
基金
全国重力台网学科中心运行经费(201101008)
中国地震局地震研究所所长基金(IS200956045)
关键词
日本地区
Ms9.0地震
地震重力台网
gPhone重力仪
震前重力高频扰动
near Japan east coast
Ms9.0 earthquake
earthquake gravity network
gPhone gravimeter
fore-seismic gravity high frequency disturbance
