Geoelectric potential difference monitoring in southern Sumatra, Indonesia — Co-seismic change

Autor: Edy M. Arsadi, Seiya Uyeda, Toshiyasu Nagao, T. Mogi, Djedi S. Widarto, Yoshikazu Tanaka, Wataru Kanda, Nanang T. Puspito
Rok vydání: 2000
Předmět:
Zdroj: Earth, Planets and Space. 52:245-252
ISSN: 1880-5981
DOI: 10.1186/bf03351633
Popis: Five geoelectric potential difference (electric field, here after) monitoring stations have been in operation since September 1997 in anarea near Liwa town, southern Sumatra, Indonesia, to examine the relationship between electric field changes and earthquakes. Short-term electric field variations were found to correspond mainly to geomagnetic activity, while long-term variation was mostly gradual shift and was clearly correlated neither precipitation nor ground water level variations. Co-seismic electric field changes ranging between 1 and 8 mV were observed for five mb > 5 earthquakes at multiple stations during September ∼ December 1997. The epicenters of the earthquakes were in the Indian Ocean within about 170 km from the monitoring sites.
Databáze: OpenAIRE