Change in magnetic field: an early warning system to understand seismotectonics

• Main Authors: S. Mukherjee, A. Mukherjee
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2002
• Subjects: aurora borealis
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.510.5289; http://www.aip.de/thinkshop/posterpaper/mukherjee1.pdf

Abstract. A correlation is attempted with the occurrence of global earthquake and earth directed coronal mass ejections and change in magnetic field of earth-sun environment. On 24th January 2001 an earth directed coronal mass was ejected which took two days to reach the earth surface and a major earthquake of magnitude 7.9 occurred in Gujarat, west coast of India. In entire world, a total of 65 earthquakes have been reported on the same day. Earth directed coronal mass ejection produced a suspected invisible tail of electrified gas. The tail which streams from earth towards Sun was spotted by IMAGE spacecraft. Explosive events on the Sun can charge the magnetosphere with energy, generating magnetic storms that occasionally may affect the active faults in igneous geosphere to trigger the shallow focus earthquake. This correlation is observed in case of many more earthquakes in entire world. Besides these it has been observed that there is an increased occurrence of earthquakes globally in this period of solar maximum. Sunspots are continuously increasing in 2001 and there are increased chances of earthquake during this period. Earthquake prone active fault areas of whole world may be monitored by high-resolution satellite data. In hundreds of cases it has been observed that earth directed coronal mass ejection be followed by change in Sun-Earth magnetic field leads to remarkable changes in Earth environment. If the Coronal mass ejection (CME) is earth directed, it may produce earthquakes if active fault zones are falling in that latitude. It is possible to forecast the possibility of triggering of earthquake by looking into the location of active sunspot before it harbors energy towards earth. Whatever be the manifestations in the environment of the atmosphere or geosphere there is a positive correlation of CME with change in magnetic field followed by aurora borealis or sudden spark of light from sky before earthquake. It is recommended that all the coronal mass ejections should be watched carefully. Key words: ...