At
Sinabung / Sumatra, repeatedly pyroclastic flows practically filled the southeast drainage of the volcano, and will take other routes oriented to the south or
east . The danger will inevitably be increased in these areas.
Sinabung - 01/29/2014 - Doc. Nasa satellite EO-1 Ali
Sinabung - new
route taken by the pyroclastic flow of 01.30.2014 / 7:30 LT - photo Aris Yanto
Map of exclusion zones and displaced centers updated 20/01/2014 by OCHA / Indonesia .
The AVO - Alaska Volcano Observatory has increased the aviation alert level of Shishaldin / Aleutian to yellow , and raises its alert level Volcanic a notch,
on January 30 , on the basis of increase in temperature surface in the summit crater - obs. satellite - and an increase in vapor emissions - obs. satellite and
webcam.
The Shishaldin is monitored by a local seismic network ,
webcam, and geodetic telemetry networks and measurements of infrasound . However, seismic monitoring is compromised by equipment
failures of seismic stations near the volcano.
Shishaldin - Steaming from
the summit crater - NB : the photo of Pathfinder Aviation of October 2008 . / AVO- USGS
.
Location of Shishaldin volcano in the
Aleutian volcanic arc - map AVO / J. Schaefer
The AVO
reported that this phenomenon is not isolated : the Anaikchak volcano is no longer under seismic monitoring since January 23 , and its alert level may no longer be updated.
Failures seismic monitoring equipment are also reported to Fourpeaked volcanoes , Isanotski , Fisher, Westdahl and Gareloi , and many of these stations provide data only intermittently ,
and signs of eruption are no longer provided. We must
remember that the monitoring systems of Wrangell volcanoes , Little Sitkin and Semisopochnoi , who tripped in previous years , have not yet been restored. (see map health seismic network http://www.avo.alaska.edu/map/seismic_network_health.php )
Source: AVO
In Ecuador, Tungurahua shows since the
morning of January 30, a change of activity . Five small explosions,
tremor and a general increase in seismicity were recorded.
Cloud cover prevents a good view of the summit, but a column of light gray ash was seen between the clouds , rising to 2,000 meters away.The lookouts reported light ash fall on areas of Penipe ,
Pungal and Palitahua , southwest of the volcano.
Tungurahua - eruptive plume 30/01/2014 - webcam IGEPN
In lack of visibility for the moment, a
view of the Tungurahua volcano and the valley of Patate and Pelileo - end of 2013 -
photo Sebastian Crespo / Tungurahua Facebook
Source: IGEPN
