USGS
5th October 2011, 22:21
Instituto Geogr?fico Nacional (IGN) reported a drastic increase in the seismic activity at Hierro during 27 September-3 October, with more than 1,100 new seismic events detected, 83 of them felt by residents, with a maximum intensity value of IV using EMS-98 (European Macroseismic Scale). Most of the hypocenters were located offshore, SW of the island, at around 14 km depth. The maximum magnitude recorded during this week was 3.8. The total number of located events had reached more than 9,300 since the anomalous activity began on 16 July. The superficial deformation measured by the GPS network had reached 35 mm.
Source: Instituto Geogr?fico Nacional (IGN)
More... (http://www.volcano.si.edu/reports/usgs/index.cfm?wvarweek=20110928#hierro)
Source: Instituto Geogr?fico Nacional (IGN)
More... (http://www.volcano.si.edu/reports/usgs/index.cfm?wvarweek=20110928#hierro)