Earthquake Detection and Analysis

Earthquake detection and analysis, as practiced in geophysics, goes beyond recording ground shaking to include the search for subtle signals that may precede a rupture by hours or days. Researchers have observed that large earthquakes are sometimes accompanied—or even anticipated—by measurable disturbances across multiple Earth systems: unusual electromagnetic radiation from stressed rock, shifts in geoelectric potential, anomalous heat emission detected by satellite, and perturbations in the ionosphere consistent with a coupled chain running from the lithosphere through the atmosphere to the upper atmosphere. Whether these signals are causally linked to impending seismic activity, or are coincidental, remains genuinely contested, and establishing reliable, physically grounded precursors that could inform short-term earthquake forecasting is one of the most demanding open problems in the discipline. Current work focuses on building large, multiparameter datasets from dense sensor networks and satellite observations, and on developing the physical models of lithosphere-atmosphere-ionosphere coupling needed to distinguish real precursory patterns from noise.

Works

138,142

Total citations

368,696

Keywords

Ionospheric AnomaliesSeismic ElectromagneticsPre-earthquake SignalsThermal Infrared EmissionLithosphere-Atmosphere-Ionosphere CouplingElectromagnetic Radiation