West Iceland, is a direct run off river. Fig. 4 shows the effect of low precipitation on such rivers. During a dry spell in late summer, water discharge was very low. In preceding years, it was also rather low except during the summer of 2005 (red line). The black line (2010) shows that hardly any rain fell on the drainage area last summer.
Location
A map which shows the location of various rivers
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A snow avalanche was released from the Tvísteinahlíð mountain by the health care centre at Engihlíð in Ólafsvík on 19 March 2012. The fracture line of the avalanche was near the top of the slope and extended from the gully to the west of the hillside and into supporting structures that have been installed as protection measures to reduce avalanche danger in the settlement near
/about-imo/news/nr/2476
A snow avalanche was released from the Tvísteinahlíð mountain by the health care centre at Engihlíð in Ólafsvík on 19 March 2012. The fracture line of the avalanche was near the top of the slope and extended from the gully to the west of the hillside and into supporting structures that have been installed as protection measures to reduce avalanche danger in the settlement
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September 2014. The gray line represents relative displacement and the blue line the median value for 180 minutes. Earthquakes in the area are shown separately below (same x-axis, same timing). Enlarge.
The first two weeks as an example
Total subsidence from 12 Sept 2014 until 1 March 2015
The total subsidence of the glacier surface above the Bárðarbunga caldera since the equipment
/earthquakes-and-volcanism/gps-measurements/bardarbunga/caldera
of a town in north Iceland in 2012
27.4.2012
A snow avalanche was released from the Tvísteinahlíð mountain by the health care centre at Engihlíð in Ólafsvík on 19 March 2012. The fracture line of the avalanche was near the top of the slope and extended from the gully
/about-imo/news/nr/2476/
in north Iceland in 2012
Tómas Jóhannesson
25.4.2012
A snow avalanche was released from the Tvísteinahlíð mountain by the health care centre at Engihlíð in Ólafsvík on 19 March 2012. The fracture line of the avalanche was near the top of the slope and extended from
/avalanches/articles/nr/2475/
(in the
satellite's line-of-sight) associated with the magnitude 5.6 earthquake.
Additional deformation is observed in the vicinity of Driffell and east of Keilir,
related to movement on faults in this region. Multiple fractures, related to
these earthquakes, have been observed on the ground in this area.These earthquakes are
related to the volcano-tectonic
reactivation of the Reykjanes Peninsula which
/about-imo/news/satellite-images-show-significant-ground-deformation-associated-with-earthquake
August 2022 showing new dike intrusion on Reykjanes Peninsula and deformation associated with the M5.47 earthquake on 31 July 2022. Coloured fringes show ground deformation in the satellite's line-of-sight, related to the new dike intrusion beneath Fagradalsfjall which commenced on the 30th July 2022. The interferogram shows approximately 16 cm of northwestward displacement related
/about-imo/news/status-of-unrest-in-reykjanes
at Keflavik International Airport, at 220 km distance from the volcano. The cloud extends above a large part of Vatnajökull ice cap. The line marks the approximate location of Grímsvötn volcano.
The last eruption in Grímsvötn occurred in November 2004. Grímsvötn is Iceland's most frequently erupting volcano.
The figure below shows tremor activity in Grímsvötn associated with the eruption. Note
/about-imo/news/nr/2174
(dyn) 23rd and 24th August. The amplitude is shown in three frequency bands (0,5-1 Hz; 1-2 Hz; 2-4 Hz). A low frequency tremor pulse (red line) is clearly seen just before noon 23rd August.
Of interest - Bárðarbunga
Reduction of the accesscontrolled area around Holuhraun lava field
END
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