Surface latent heat flux as an earthquake precursor

By S. Dey, Ramesh P. Singh. 2003

204 citations recorded by the source corpus.

Abstract. The analysis of surface latent heat flux (SLHF) from the epicentral regions of five recent earthquakes that occurred in close proximity to the oceans has been found to show anomalous behavior. The maximum increase of SLHF is found 2–7 days prior to the main earthquake event. This increase is likely due to an ocean-land-atmosphere interaction. The increase of SLHF prior to the main earthquake event is attributed to the increase in infrared thermal (IR) temperature in the epicentral and surrounding region. The anomalous increase in SLHF shows great potential in providing early warning of a disastrous earthquake, provided that there is a better understanding of the background noise due to the tides and monsoon in surface latent heat flux. Efforts have been made to understand the level of background noise in the epicentral regions of the five earthquakes considered in the present paper. A comparison of SLHF from the epicentral regions over the coastal earthquakes and the earthquakes that occurred far away from the coast has been made and it has been found that the anomalous behavior of SLHF prior to the main earthquake event is only associated with the coastal earthquakes.

Subfields: Geophysics

View Paper: https://www.semanticscholar.org/paper/20adb45a25a6840abffe6534a51f8db758e68a76

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In Geophysics

Citations in the corpus

The physical nature of thermal anomalies observed before strong earthquakes (2006, background): “But discovered recently by Dey and Singh (2003) anomalous variations of the surface latent heat flux (SLHF) before earthquakes, involve the variations of air humidity which cannot be explained by the heat deposit from the crust and requires other interpretation.”
Thermal, atmospheric and ionospheric anomalies around the time of the Colima M7.8 earthquake of 21 January 2003 (2006, background): “This is why the anomalous fluxes of the SLHF are observed on 18 and 20 January (see Fig.”
Lithosphere-Atmosphere-Ionosphere Coupling (LAIC) Model - An Unified Concept for Earthquake Precursors Validation (2011, background): “The answer can be found if to consider carefully the results of anomalous latent heat flux measurements before strong earthquakes (Dey and Singh, 2003).”
Ionospheric Precursors of Earthquakes; Recent Advances in Theory and Practical Applications (2004, background): “So it is natural that after the discovery of pre-earthquake thermal anomalies, latent heat anomalies were also discovered with the help of remote sensing techniques (Dey and Singh 2003).”
Lithosphere-atmosphere-ionosphere coupling as governing mechanism for preseismic short-term events in atmosphere and ionosphere (2004, unknown): “Dey and Singh (2003) inform about evaporation change related to the same earth-quake.”