Ionospheric disturbances before and after the January 14, 2018 Eartquake in Peru

Title:

Ionospheric disturbances before and after the January 14, 2018 Eartquake in Peru

Creator:

Sotomayor Beltran , Carlos

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:531954c4-cac1-4fea-a554-35cf0be7e486
uuid:531954c4-cac1-4fea-a554-35cf0be7e486
doi:10.13168/AGG.2019.0001

Subject:

ionospheric disturbances, vertical total electron content, earthquakes, and equatorial ionization anomaly

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

An earthquake of Mw 7.1 occurred on January 14, 2018 in the southern coast of Peru. In this study, public available Global Ionospheric Maps (GIMs) provided by the Center for Orbit Determination in Europe (CODE) were used to look for ionospheric disturbances pre- and post-earthquake. Twelve days before the seismic event, a positive anomaly was detected at low latitudes in the northern hemisphere in differential vertical total electron content maps. Moreover, given the low-latitude nature of this incident, changes in the shape of the Equatorial Ionization Anomaly (EIA) were analyzed as well. A significant amplification of the northern crest in the EIA of 33.3% was also observed 12 days before the earthquake. Because the geomagnetic and solar conditions for January 2, 2018 were very quiet and also knowing that natural ground radioactivity produced by the earthquake's preparation can increase the total electron density in the EIA, it is considered that this ionospheric disturbance is product of the earthquake's preparation. Additionally, the detection of a negative ionospheric anomaly 2 days after the incident is reported. An association to the earthquake of this negative disturbance is hinted at, due to the also the rather quiet geomagnetic and solar 0conditions after the seismic occurrence.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

5-10

Source:

Acta geodynamica et geomaterialia : | 2019 Volume:16 | Number:1 (193)

Harvested from:

CDK

Metadata only:

false