ABSTRACT
Part 3 summarizes the techniques for tsunami detection and monitoring systems. In Chapter 19, Saraf et al. described the satellite detection of pre-earthquake thermal anomaly
and the turbidity of seawater. Because of the accumulation of stress in the fault plane of the tectonic plate margins, the thermal regime near the ground surface can be affected. Monitoring of land surface temperature (LST) near earthquake zones can yield valuable clues about possible future tsunamis. Several recent earthquakes have indeed shown these pre-cursors in the form of increased LST. The authors have analyzed the NOAA-AVHRR data and deduced that the thermal anomalies started appearing about 5 days prior to 26 December 2004 and the LST anomaly reached a maximum of 4-6◦C on 25 December 2004. The authors also analyzed the TERRA-MODIS data set and noted the seawater turbidity generated by the tsunami.
