摘要
Based on the IDP data from the French DEMETER satellite,global distribution is shown,which corresponds to three precipitation zones:the aural precipitation zone,the mid-high latitude precipitation zone and the South Atlantic precipitation zone.Then the Chili earthquake with M8.8 which occurred on February 27,2010 is taken as an example.The IDP fluxes from repeat orbits are compared and the results show that there is a clear enhancement on February 26,2010,just one day ahead of the Chili earthquake.In the south zone with L=2.1～2.7,the flux on February 26 is higher than that on previous days.However in the north zone with L=2.1～2.7,there is no clear change during the day but great enhancement during the night,which is close to the time of the earthquake.At the same time,the flux on February 26 near the equator is far lower than that on previous days.
Based on the IDP data from the French DEMETER satellite, global distribution is shown, which corresponds to three precipitation zones： the aural precipitation zone, the mid-high latitude precipitation zone and the South Atlantic precipitation zone. Then the Chili earthquake with M8.8 which occurred on February 27, 2010 is taken as an example. The IDP fluxes from repeat orbits are compared and the results show that there is a clear enhancement on February 26, 2010, just one day ahead of the Chili earthquake. In the south zone with L = 2.1 ~ 2. 7, the flux on February 26 is higher than that on previous days. However in the north zone with L = 2.1 ~ 2. 7, there is no clear change during the day but great enhancement during the night, which is close to the time of the earthquake. At the same time, the flux on February 26 near the equator is far lower than that on previous days.
基金
sponsored by the Special Scientific Research.Fund of Earthquake Public Welfare Prefession of China(201008007),CEA(02092408)
the Sino-Italy Cooperation Project(2009DFA21480)
