Remote sensing observations of pre‐earthquake thermal anomalies in Iran

Stresses acting before an earthquake in tectonically active regions can augment the near ground temperature of the region. Such changes detected through thermal remote sensing can provide important clues about future earthquakes. A post‐earthquake analysis through NOAA‐AVHRR data showed pre‐earthquake thermal anomalies prior to the Bam earthquake on 26 December 2003 and the Dahoeieh‐Zarand earthquake on 21 February 2005 in Iran. It was observed in these earthquakes that there was short‐term temporal increase in land surface temperature (LST) of the regions around the epicenters. The rise in temperature was about 5–10°C. Further, temperature variation curves prepared from air temperature data collected from several meteorological stations around epicentres confirmed the appearance of thermal anomalies prior to several earthquakes between February and March 2005 in Iran. The thermal anomalies went away along with the earthquake events. Release of greenhouse gases from rocks due to the induced pressure before earthquakes can create a localized greenhouse effect. Charge carriers in rocks can be free electrons, which dissociate under high pressure. When they again recombine to attain electron stability they release heat, which can increase the LST of the region.

[1]  F. Freund.  Charge Generation and Propagation in Igneous Rocks , 2002 .

[2]  强祖基,et al.  THERMAL INFRARED ANOMALY PRECURSOR OF IMPENDING EARTHQUAKES , 1991 .

[3]  A. A. Tronin,et al.  Thermal IR satellite sensor data application for earthquake research in China , 2000, 2001.11735.

[4]  Z. Qiang,et al.  THERMAL INFRARED ANOMALY PRECURSOR OF IMPENDING EARTHQUAKES , 1991 .

[5]  Liu Tao,et al.  Satellitic thermal infrared brightness temperature anomaly image——short-term and impending earthquake precursors , 1999 .

[6]  Arun K. Saraf,et al.  Cover: NOAA‐AVHRR detects thermal anomaly associated with the 26 January 2001 Bhuj earthquake, Gujarat, India , 2005 .

[7]  Arun K. Saraf,et al.  Thermal Remote Sensing Technique in the Study of Pre- Earthquake Thermal Anomalies , 2005 .

[8]  James Jackson,et al.  The Dahuiyeh (Zarand) earthquake of 2005 February 22 in central Iran: reactivation of an intramountain reverse fault , 2006 .

[9]  Dimitar Ouzounov,et al.  Mid-infrared emission prior to strong earthquakes analyzed by remote sensing data , 2004 .

[10]  Arun K. Saraf,et al.  Cover: Satellite detects surface thermal anomalies associated with the Algerian earthquakes of May 2003 , 2005 .

[11]  F. Freund,et al.  Rocks That Crackle and Sparkle and Glow: Strange Pre-Earthquake Phenomena , 2003 .

[12]  K. Shadan,et al.  Available online: , 2012 .

[13]  Zu-Ji Qiang,et al.  An experimental study on temperature increasing mechanism of satellitic thermo-infrared , 1997 .

[14]  A. A. Tronin,et al.  Satellite thermal survey—a new tool for the study of seismoactive regions , 1996 .