Critical Dynamics in Stratospheric Potential Energy Variations Prior to Significant (M > 6.7) Earthquakes

Lithosphere–atmosphere–ionosphere coupling (LAIC) is studied through various physical or chemical quantities, obtained from different sources, which are observables of the involved complex processes. LAIC has been proposed to be achieved three major channels: chemical, acoustic, and electromagnetic. Accumulated evidence supporting acoustic channel hypothesis published, while atmospheric gravity waves (AGWs) play a key role in as leading mechanism for transmission energy lower atmosphere stratosphere mesosphere, associated with disturbances observed prior strong earthquakes (EQs). The seismogenic AGW result temperature disturbances, usually stratospheric potential (EP). In this work, we examined 11 cases significant EQs (M > 6.7) that occurred during last 10 years at geographic areas by analyzing profile wider location each one EQs. “Sounding Atmosphere using Broadband Emission Radiometry” (SABER) instrument, part “Thermosphere Ionosphere Mesosphere Energetics Dynamics” (TIMED) satellite, data were employed compute (EP) AGW. Using profile, first calculated EP determined altitudes’ range prominent pre-seismic observed. Subsequently, time series specific altitudes, within “disturbed” range, analyzed criticality analysis method termed “natural time” (NT) order find any an approach critical state (during phase transition symmetric low symmetry phase) EQ occurrence. Our results show indications fluctuation few days (1 15 days) EQs, except case. our study, also all temperature-related extreme phenomena have near areas, take into account possible non-seismic influence on results.