NDLI: Ionospheric Plasma Response to M w 8.3 Chile Illapel Earthquake on September 16, 2015

Content Provider	Springer Nature Link
Author	Reddy, C. D. Shrivastava, Mahesh N. Seemala, Gopi K. González, Gabriel Baez, Juan Carlos
Copyright Year	2016
Abstract	The lithosphere and the atmosphere/ionosphere continuously exchange energy through various coupling mechanisms. In particular, the earth surface displacement caused by earthquakes, volcanoes and tsunamis can manifest as ionospheric plasma perturbations. We investigate the coseismic induced ionospheric total electron content (TEC) perturbations following the M w 8.3 Illapel thrust earthquake that occurred on September 16, 2015. The continuous global positioning system (GPS) data at 48 sites from Centro Sismológico Nacional and International GNSS Service GPS networks have been used in this study. The nearest GPS site recorded the ionospheric response 10 min after the occurrence of this earthquake. The maximum vertical coseismic induced TEC amplitude is ~1.4 TECU, and the perturbations are pronounced in the northern region of the epicenter and confined to less than ~1500 km radius. The average horizontal acoustic wave velocity has been determined as ~1260 m/s. We also observed acoustic resonance recorded by PRN 12 at 4.3 mHz corresponding to the first overtone of acoustic mode and lasting for about 30 min. In this study, we present characteristics of GPS derived ionospheric plasma perturbations following Illapel earthquake.
Starting Page	1451
Ending Page	1461
Page Count	11
File Format	PDF
ISSN	00334553
Journal	Pure and applied geophysics
Volume Number	173
Issue Number	5
e-ISSN	14209136
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-04-01
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	GPS TEC Illapel earthquake coseismic ionosphere plasma acoustic resonance Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

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