Bárðarbunga - all earthquakes
Continually updated maps
In this article, the most recent earthquakes at Bárðarbunga 2014 - 2015 are given by maps that are updated more or less continuously (see terms and conditions below) as well as all earthquakes since the onset of these events. Each earthquake is represented by a circle. The size of the circle indicates the magnitude. The timing of each earthquake is colour coded, see the bar to the right of each map. The date and timing of each map is in the lower right hand corner (yyyymmdd 00:00).
The first map shows all earthquakes since the onset of this seismic event (counting days) and it is obvious from the myriad of circles what a magnificent event this has been. The next two maps represent today's earthquakes (counting hours since midnight) and show negligible activity now that this event is over.
Manually processed earthquakes since 16 August 2014:
Manually processed earthquakes since midnight:
Automatic recording of earthquakes since midnight:
See the earthquakes - life maps
Maps which show the earthquakes of each day are available. The link opens another web page where a map for each day can be chosen from a list of dates. Click the button "keyra" below the dates‘ column in order to run this sequence of events in chronological order. With every passing day, a new map is added to the list.
Videos from certain periods
Additionally, videos are made for certain periods, now 16 August til 31 October 2014, running a sequence of maps in chronological order showing the manually processed earthquakes. The bar to the right implies the age of any earthquake counting hours from the date and time given in the video at any given moment (an explanation not important unless pausing the video). An earlier video shows the first month only, run twice in the video, first fast and then at half speed.
Very clearly, the run of the videos shows how the intrusive dike stretches towards northeast and how the earthquakes, large and small, cluster around the caldera rims of Bárðarbunga. Minor activity is seen in Tungafellsjökull (a small ice cap to the west); more impressive is the fact how dispersed the activity is initially and how it then clusters towards north (Kistufell) for a short while, before concentrating in two separate areas: along the dike and around the caldera.
The timing of the two volcanic eruptions is pinpointed in the videos; first the volcano symbol appears briefly but then permanently. As the eruption progresses, seismic activity in the intrusions decreases. Most prominent are large earthquakes which persistently occur on the rims of the Bárðarbunga caldera, mainly on the northern edges:
The first month
In the first video, the onset of events can be observed at less speed (see minute 0:46):
Terms and conditions
Earthquake locations presented on this site are from preliminary analysis of the seismicity recorded by the Icelandic Meteorological Office. That is, locations from the automatic analysis system, SIL and the small fraction of the data that has been reviewed by analysts from IMO‘s SIL monitoring group. People using these data in their publications do so at their own risk, as earthquake locations and magnitudes may change upon further analysis and review.
If the data are used in publications, they should be clearly referenced as: "Preliminary analysed data by the SIL seismic monitoring group of the Icelandic Meteorological Office." Date of delivery from the data bank must follow.
Further information on usage of data from IMO's web-site is given under pages about IMO.