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
Iceland's representative on Climate Week NYC will be Birta Líf Kristinsdóttir, Icelandic Met Office, one of eleven TV meteorologists who were asked to make a weather forecast for their own country in 2050 based on the visions of the newest IPCC report. These weather forecasts of the future are presented as a set of videos, made in collaboration with WMO and published one per day until
/about-imo/news/nr/2989
volume towards a new steady state of the glacier in the case of a “moderate” step change
in climate.
The relative importance of the mass-balance–elevation feedback and the reduction in ice-
covered area may be analysed with reference to the perturbation equation
d(DV )
dt
= B0+beDA+GeDV = B
0
DV
tV
; (3)
where the volume time-scale tV is given by
tV =
1
( be=H) Ge
; (4)
(Harrison and others, 2001
/media/ces/ces-glacier-scaling-memo2009-01.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
forecast on its
web-page and warnings if conditions change to the worse.
o Instructions from the office of the Chief Epidemiologist and The Environment
Agency can be found on their web-sites www.ust.is and www.landlaeknir.is
o The Icelandic Met Office will read forecasts for sulphuric gases along with
weather news on the national radio and TV.
o The Environment Agency is working on getting more
/media/jar/myndsafn/Factsheet-Bardarbunga-20140913.pdf
forecasts for sulphuric gases along with
weather news on the national radio and TV.
o The Environment Agency is working on getting more measuring equipment
to better monitor the gases coming from the volcanic eruption.
o Information and any questions on air pollution can be sent to The
Environment Agency through the email gos@ust.is. The Environment Agency
is especially looking for information from
/media/jar/myndsafn/Factsheet_Bardarbunga_20140915.pdf
on their
web-sites www.ust.is and www.landlaeknir.is
The Icelandic Met Office will read forecasts for sulphuric gases along with weather news on the national
radio and TV.
The Environment Agency is working on getting more measuring equipment to better monitor the gases
coming from the volcanic eruption.
Information and any questions on air pollution can be sent to The Environment
/media/jar/myndsafn/Factsheet_Bardarbunga_20140916.pdf
increase
Landslides also occur at central volcanoes without any
volcanic trigger. An example of this is the rockslide in Askja in 2014 where
long term subsidence of a caldera wall, formed in volcanic activity in 1875,
caused the slope instability. The slide is considered to be one of the biggest rock
slides event in Iceland during historical times. More about this landslide in Icelandic can
/volcanoes/volcanic-hazards/landslides/
in the slope of the caldera wall. The peak in tremor is subsequently caused by the debris fall into the lake. The following flood wave in the lake migrated several times back and forth, causing continuing but decreasing tremor that was seen during the next twenty minutes after the rockslide.
There is no evidence for a strong steam explosion in the earthquake data. However it can not be ruled out
/earthquakes-and-volcanism/articles/nr/2921