 |
| Titel |
"Real time analysis" of the ion density measured by the satellite DEMETER in relation with the seismic activity |
| VerfasserIn |
M. Li, M. Parrot |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 9 ; Nr. 12, no. 9 (2012-09-18), S.2957-2963 |
| Datensatznummer |
250011104
|
| Publikation (Nr.) |
 copernicus.org/nhess-12-2957-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| This paper is related to the study of the ion density recorded by
the low altitude satellite DEMETER. In a first time there is an automatic
search for ionospheric perturbations in the complete satellite data set of
ion densities. Then perturbations due to known ionospheric phenomena (for
example, solar activity) are eliminated as well as perturbations not above a
seismic zone. In a second time, there is a search to know if each selected
perturbation corresponds to a future earthquake. The earthquakes have been
classified depending on their magnitude and depth. This attempt to predict
earthquakes of course generates false alarms and wrong detections. The
results of this statistical analysis are presented as function of various
parameters. It is shown that the number of false alarms is very important,
because the ionosphere has variations not only linked to the seismic activity.
The number of wrong detections is also important and can be explained by the
fact that the satellite is above a seismic area only a few minutes per day
and we do not expect continuous perturbations from a given earthquake. The
more important results of this study is that the ratio between detected
earthquakes and earthquakes to be detected increases with the magnitude of
the earthquakes which intuitively makes sense. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|