Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake

Details Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jastp..70.1919z&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 70, Issue 15, p. 1919-1928.

Physics

5

Ionosphere, Total Electron Content, Earthquake, Equatorial Anomaly

Scientific paper

This paper investigates the features of pre-earthquake ionospheric anomalies in the total electron content (TEC) data obtained on the basis of regular GPS observations from the International GNSS Service (IGS) network. For the analysis of the ionospheric effects of the 26 September 2005 Peru earthquake, Global Ionospheric Maps (GIMs) of TEC were used. The possible influence of the earthquake preparation processes on the main low-latitude ionosphere peculiarity--the equatorial anomaly--is discussed. Analysis of the TEC maps has shown that modification of the equatorial anomaly occurred a few days before the earthquake. In previous days, during the evening and night hours (local time--LT), a specific transformation of the TEC distribution had taken place. This modification took the shape of a double-crest structure with a trough near the epicenter, though usually in this time the restored normal latitudinal distribution with a maximum near the magnetic equator is observed. Additional measurements (CHAMP satellite) have also confirmed the presence of this structure. To compare the vertical TEC measurements obtained with GPS satellite signals (GPS TEC), the International Reference Ionosphere, IRI-2001, was used for calculating the IRI TEC.

Affiliated with

Also associated with

No associations

Rating

Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous modification of the ionospheric total electron content prior to the 26 September 2005 Peru earthquake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-968640