Dashed lines encompass the V-shaped zone of tephra deposition. (c)
Oblique aerial view from west of the tephra plume at Grímsvötn on 2 November. Note the ashfall
from the plume. (Photo by M. J. Roberts.) (d) Weather radar image at 0400 UTC on 2 November.
The top portion shows its projection on an EW-vertical plane. The minimum detection height for
Grímsvötn is seen at 6 km, and the plume extends
/media/jar/myndsafn/2005EO260001.pdf
probably a few meters.
An interactive 3D model of the earthquakes during the magma
intrusion. The di?rent colours represent the activity in time from
16 August to 12 September.
During the magma intrusion, intense earthquake activity related to
subsidence of the Bárðarbunga caldera was located at the caldera
rim. Over 70 earthquakes above magnitude 5 occurred in the first
four months after the onset
/media/vedurstofan/utgafa/skyrslur/2015/IMO_AnnualReport2014.pdf
and western sides of the crater
lake is a wall of ice. On the northern side a tephra wall rises 20 meters
above the water. The ice walls at the southwestern corner of the crater
are melting, i.e. at the site of the vent that was active 4 – 6 June. The
rate of melting is assumed to be about one cuber meter per second.
Seismic tremor: Low tremor level. Pulses are observed off and on.
Earthquakes
/media/jar/Eyjafjallajokull_status_2010-06-15_IES_IMO.pdf
örugt að fara fyrir Horn í um 10 sml frá landi en það yrði
að hafa góðan útvörð.
Kl.1341, kalla TFB og spyr um ETA í RVK, ETA um kl 1440.
Kl 1305, AIS umferð fyrir N- Horn. Vegna bilunnar í WS 1 var megináhersla lögð á ískönnun í
þessu flugi.
Flugskýrsla TF-SIF
12. desember 2010
Flug nr. 117410.025
Ískönnun.
Meginröndin lá um eftirtalda staði.
1. 67°47.0N 023
/media/hafis/skyrslur_lhg/Isskyrsla_20101212.pdf
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/media/loftslag/Hare-2011-ParticipatoryModelling.pdf
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/media/loftslag/Huntjens_etal-2010-Climate-change-adaptation-Reg_Env_Change.pdf
in a collaboration between the Austrian engineering company Ingenieurbüro
Illmer Daniel e.U. (DI), Efla consulting engineers and the Icelandic Meteorological Office (IMO).
Daniel Illmer carried out the analysis of landslide protection measures, Jón Kristinn Helgason,
Tómas Jóhannesson and Eiríkur Gíslason wrote sections about the geographical setting, the land-
slide history and the assessment
/media/vedurstofan-utgafa-2016/VI_2016_006_rs.pdf
those already reported. Oxygen was measured at
normal levels, so there is no evidence of carbon dioxide (CO2)
accumulation, but this was not measured on these devices. Sulfur dioxide (SO2)
was not detected in the cave.An addition hazard is the potential
for roof collapse. During another visit in the past week, an ice block sized
2*4*0.4 m was seen to have collapsed from a side wall near
/about-imo/news/gas-concentrations-in-the-hofsjokull-ice-cave
be displaced and wall plastering might be damaged. Severe damage of well-built dwellings is not expected. The intensity of a large earthquake in this region can reach levels VI-VII on the Mercalli Scale.
It is important to regularly remind all inhabitants in seismically active regions about potential earthquake hazards. People should review their own security measures and preparedness for a large
/about-imo/news/nr/3150