HR: 1340h
AN: S33B-1315    [Abstracts]
TI: Discrimination of the earthquake-origin microwave emission from the data of the spaceborne radiometer
AU: * Maeda, T
EM: maeda.takashi@jaxa.jp
AF: Earth Observation Research Center (EORC), JAXA, 2-1-1 Sengen, Tsukuba, Ibaraki, 305- 8505, Japan
AU: Takano, T
EM: ttakano@radionet.isas.jaxa.jp
AF: Institute of Space and Astronautical Science (ISAS), JAXA, 3-1-1 Yoshino-dai, Sagamihara, Kanagawa, 229-8510, Japan
AB: Formerly, we found the microwave emission during rock crash in a laboratory for the first time in the world, and calibrated the emitted power. The detected signal is a sequence of pulses which include microwaves at the selected frequency bands of 300MHz, 2GHz and 22GHz. This fact suggested another means to detect an earthquake which is associated with rock crash or plate slip. For this purpose, we have analyzed the data obtained by the microwave radiometer, AMSR-E loaded on the satellite Aqua. Generally, since a microwave emission observed by AMSR-E is affected by various factors (e.g., emission of the earth's surface and emission, absorption and scattering of the atmosphere), we developed some analysis techniques first. Then, we have successfully extracted features observed only at the earthquake occurrence by these techniques. This earthquake was occurred at Morocco in 2004. Since the depth of the seismic center was shallower and the magnitude was larger, we have specifically focused on analysis of this earthquake. This presentation first presents the estimation of the received power by a receiver aboard a satellite. Then, the data obtained by AMSR-E are described including the disturbances or ambiguity of the data. The techniques to extract microwave signatures out of disturbances are given. Finally, an example of the data analysis is explained in the case of Morocco earthquake to show distinct emission of microwaves in relation with geological features.
DE: 0902 Computational methods: seismic
DE: 0910 Data processing
DE: 0933 Remote sensing
DE: 0935 Seismic methods (3025, 7294)
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
SC: Seismology [S]
MN: 2007 Fall Meeting