Satellite Observations of The Great Mega Thrust Sumatra Earthquake Activities
A. K. Saraf
Department of Earth Sciences, Indian Institute of Technology Roorkee
S. Choundhury
Department of Earth Sciences, Indian Institute of Technology Roorkee
S. Dasgupta
Department of Earth Sciences, Indian Institute of Technology Roorkee
要旨
The appearance of pre-earthquake thermal anomalies before the great megathrust earthquake in Banda-Aceh, Sumatra on 26 December 2004 has been detected by thermal AVHRR sensor in NOAA series of satellites. The anomalies appeared five days prior to the major shock of magnitude (Mw) 9.0 and reached to a maximum on 25 December 2004, just one day before the main event. The rise in temperature was about 4-6?C. The rise in temperature subsided along with the earthquake. Seawater turbidity induced by the underwater rupture and the violent tsunami was evident through NOAA-AVHRR and Terra-MODIS data.
