Fri 20 Apr 2018 16:25:07 CEST
   
Text Size
Login

Hierro (Spain) - Report for 16 November-22 November 2011 - NEW

Instituto Geogrfico Nacional (IGN) reported that during 16-22 November the submarine eruption continued S of El Hierro Island. During this period, the amplitude of the tremor showed two rapid changes, a decrease in amplitude at 2200 on 17 November and an increase at 1710 on 19 November. Seismic amplitudes decreased between late 20 November and mid-day on 21 November, and then remained stable at values similar to those noted during 19-25 October. Superficial activity over the emission center was rare, characterized by alternating days without seawater discoloration and days where there was minor gas and tephra content in the water and persistent discoloration.During the period, 200 seismic events were located, most of them offshore to the N of the island at depths of 16-23 km and a maximum magnitude of 3.7. Seventeen of these events were felt by residents at a maximum intensity value of III using EMS-98 (European Macroseismic Scale). GPS data analyses showed little deformation in the horizontal components, while in the vertical component stations located in the N of the island showed uplift and the rest showed subsidence.

Source: Instituto Geogrfico Nacional (IGN)

...

Read more http://www.volcano.si.edu/reports/usgs/index.cfm?wvarweek=20111116#hierro

Tags:

Translation

English Czech French German Hungarian Italian Polish Portuguese Russian Slovak Spanish

Who's Online

We have 652 guests online

Statistics

Members : 7
Content : 69235
Web Links : 6
Content View Hits : 16401573

UNOSAT - Maps

Designed by the Search and Rescue Czech Republic

INFORMATION, COMMUNICATION, ORGANIZATIONAL AND MATERIAL SUPPORT FOR GROUPS INVOLVED IN SEARCH AND RESCUE MISSIONS

Managed by the Coordination Centre of Disaster Medicine

CONTINUOUS DISASTER MONITORING AND EVALUATION FROM DISASTER MEDICINE PERSPECTIVE

Restore Default Settings

Login Form