than 30,000 earthquakes at 5–7 km depth, advancing in short bursts at 0.3–4.7 km/h. Following each
surge forward, the seismicity behind the dyke tip dropped, implying that the subsequent dyke opening
was mostly aseismic. More detailed analyses of the seismic data recorded by a dense network around
the Vatnajökull icecap have revealed small magnitude, long-period (LP or B-type) events which
/media/norsem/norsem_bryndis.pdf
of this type may represent a serious risk if they occur in tourist spots such as the Askja region.
We present observations of the July 21st, 2014 event as recorded by the national infrasonic arrays
network installed in the country within the FUTUREVOLC European project. Infrasound released by
the event was recorded at a distance of 210 km from Askja volcano.
We performed 2D FDTD modeling
/media/norsem/norsem_giulia.pdf
of volcano-
tectonic structures are sets of parallel, northerly striking transcurrent faults that generate the largest
earthquakes in this zone, up to M 6.5. Their surface expressions are en echelon fracture arrays and
push-up structures. The sense of displacement is right-lateral. The distance between them varies from
0.5 to 5 km, and together they form a bookshelf-type fault system taking up the left
/media/norsem/norsem_palli.pdf
Type: Subglacial volcano with caldera
Summit ice cover: Yes
Dominant type of activity: Basaltic explosive, phreatomagmatic
Magma type: Basalt dominant
Known precursors: No information
Expected precursors: Significant increase in seismic activity
Monitoring level: High
Current seismicity: Seismic swarms from 16 August 2014. See http://vedur.is for live
information
Eruption
/media/jar/Bardarbunga_kafli20140825.pdf
.............................................................................................. 11
4 Recalculation of magnitudes and pgx-distance relations without near-source effect .. 12
5 Other predictor variables .............................................................................................. 19
6 Amplitude variations between stations and instrument type/media/vedurstofan/utgafa/skyrslur/2009/VI_2009_012.pdf
the eastern half of the craters was measured and found to be up to 40 m thick. Intense steam rises up from the craters, with occasional small ashy explosions. The noise of intense boiling and or degassing is heard from the craters. The crater rim is coated with fine ash that extends 20 m from the edge. Strong smell of sulfur around the craters.
At 20:45 the steam plume was measured to be at the altitude
/earthquakes-and-volcanism/articles/nr/1884
6University of Washington,
Seattle, WA 98195, USA. 7NOAA Geophysical Fluid
Dynamics Laboratory, Princeton, NJ 08540, USA.
*Author for correspondence. E-mail: cmilly@usgs.gov.
An uncertain future challenges water planners.
Published by AAAS
on July 12, 201
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/media/loftslag/Milly_etal-2008-Stationarity-dead-Science.pdf
conditions
An interactive weather map shows weather observations at any station in the country.
Installation
Get the weather app at Google Play Store or Apple App Store. Type VEDUR or vedur to find the app and install. Select language under Settings (Stillingar), shown in the video below.
Video instructions
A video shows all the features of the weather app for those who want to familiarise
/about-imo/news/nr/3224