Characteristics of Precursory Earthquakes Associated with Eruptions at Showa Crater of Sakurajima Volcano

Autor:	TAMEGURI, Takeshi, IGUCHI, Masato
Jazyk:	japonština
Rok vydání:	2013
Předmět:	precursory earthquake 桜島火山 519.9 Showa crater 前駆地震 Sakurajima volcano 昭和火口
Zdroj:	京都大学防災研究所年報. B. 56:181-185
ISSN:	0386-412X
Popis:	Explosive eruptions at Showa crater of Sakurajima volcano have become active from 2009. Small earthquake swarms sometimes occur before about 1-2 hours of explosions and eruptions with a large amount of emission of volcanic ash. The small earthquakes are high-frequency (5-6 Hz) and no clear S-wave. The earthquakes are classified as BH-type. Hypocenters of the earthquakes are located at a depth of 0.5 km beneath the Showa crater. Occurrences of the earthquake swarms begin 30 minutes to 1 hour after start of inflation observed by extensometers before explosions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=jairo_______::5d99bc0d0dfa66ae34c6d2e97db8be24 http://hdl.handle.net/2433/181549 Zobrazit plný text záznamu