and the Icelandic Coast Guard, see disclaimer.
The vertical displacement (m) was monitored by near real time presentation of data from a GPS station, mounted in the middle of the caldera. The elevation above sea level, top left, refers to the zero value on the y-axis, while such value top right shows the current position of the station (m a.s.l.).
The upper graph shows the first two weeks, 12 - 25
/earthquakes-and-volcanism/gps-measurements/bardarbunga/caldera/
This explains why tephra layers from Hekla often have a light coloured base and a dark top, making them ideal tephra marker layers.For more information on the Hekla volcanic system, visit Catalogue of Icelandic volcanoes.Hekla 20th February 1991. Photo: Oddur Sigurðsson.IMO borehole strain station, near Hekla. Photo: Matthew J. Roberts
/volcanoes/about-volcanoes/hekla/hekla-eruptions/
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
/avalanches/articles/nr/2475
and the Icelandic Coast Guard, see disclaimer.
The vertical displacement (m) was monitored by near real time presentation of data from a GPS station, mounted in the middle of the caldera. The elevation above sea level, top left, refers to the zero value on the y-axis, while such value top right shows the current position of the station (m a.s.l.).
The upper graph shows the first two weeks, 12 - 25
/earthquakes-and-volcanism/gps-measurements/bardarbunga/caldera