TITLE:
Ionospheric Anomalies Observed by GPS-TEC Prior to the 3rd of July 2013 Uganda’s Earthquake
AUTHORS:
Enoch Elemo
KEYWORDS:
Ionospheric Variability, Seismo-Ionospheric Coupling, GPS-TEC Variations, Uganda’s Earthquake, Upper Anomalies, Ionospheric Signatures
JOURNAL NAME:
Open Access Library Journal,
Vol.2 No.6,
June
1,
2015
ABSTRACT:
Recently ionospheric variability remains one of the most intensive
studies in the area of ionospheric physics. Despite the massive improved
knowledge of its dynamics, the ability to use this data to provide early, as
well as valid warning of upcoming earthquakes (seismo-ionospheric coupling) is
still controversial. However, anomalous behaviours of TEC in the ionosphere
before the occurrence of earthquakes have received several attentions by
scientists. In this paper, GPS-TEC variations of 31 days (15 days before and 15
days after the occurrence of Uganda’s earthquake of July 3rd 2013)
were examined to see if there was any seismo-ionospheric coupling. Any
correlation between the identified TEC anomalies and the earthquake in question
was examined. It was discovered that, there was the presence of an anomaly that
occurred on the 8th day of the data. And then there was another set
of consistent rise in the TEC values that started 4 days before the day of the
earthquake and continued till the day of the earthquake. A change of situation
was however noticed after the occurrence of the earthquake. The combination of
all these led to the conclusions that the anomaly in the TEC is an ionospheric
signature for the earthquake.