Robust Satellite Techniques for Detecting Preseismic Thermal Anomalies

Several satellite techniques have been proposed in recent decades to monitor geophysical phenomena possibly associated with earthquakes. Among them, several studies suggest the existence of a relation between space-time anomalies of Earth's thermally emitted radiation (usually referred as "TIR anomalies") and earthquake occurrence. More recently a robust approach has been proposed which seems to be suitable for recognizing space-time anomalies in the measured TIR signal even in the presence of highly variable contributions coming from Earth's surface and atmosphere (due for instance to meteorological factors) as well as from specific observational conditions. This Chapter presents that approach together with a modality of its implementation in the framework of an operational multiparametric system for a time-Dependent Assessment of Seismic Hazard (t-DASH).