Be informed, that based on evaluated and observed data analyzed of mt Karangetang, effective from 31 May 2009 the activity of Karangetang has increased as followed mentioned; 

1. Quake
A. 30 May 2009
• At 00.00 – 06.00 hours (local time), there have been 3 times long tectonic quake occurred with max amplitude 2-51 mm, S-P 25 second and long of quake will be 60 – 204 second. Twice the quake has felt on 2 M scale. MI on the time of 03.13 and 03.51 hours. Another twice local tectonic quake occurred, with its amplitude 21 – 51 mm, S-P 7 second and long of quake 25-80 second. 18 times deep volcanic quake (VA), max amplitude 3-20 mm, S-P 0.5 – 1 second and long quake of 5-12 second. 10 times shallow volcanic quake (VB), max amplitude 2 – 3 mm, and long quake of 2-5 second.

KARANGETANG, P. Siau - Kepulauan Sangir 

Source : http://portal.vsi.esdm.go.id
 
GENERAL DESCRIPTION