Þensla í jarðhitakerfum: kviku innskot og/eða aukinn þrýstingur í jarðhitakerfinu? Athugun á Krísuvíkursvæðinu - verkefni lokið

Fréttatilkynning verkefnisstjóra

19.1.2016

In early 2009 the Krýsuvík region on the Reykjanes Peninsula started inflating accompanied by high seismic activity.

From late 2009 to May 2010 the region deflated again to its pre inflation level. From May 2010 until the end of 2011 the region inflated again, this time at a more rapid rate with uplift of over 7 cm observed. GPS and gravity measurements were conducted as well as analysis of InSAR images to try to better understand the underlying source/s.

Heiti verkefnis: Þensla í jarðhitakerfum: kviku innskot og/eða aukinn þrýstingur í jarðhitakerfinu? Athugun á Krísuvíkursvæðinu.

Verkefnisstjóri: Sigrún Hreinsdóttir, Jarðvísindastofnun Háskólans
Tegund styrks: Verkefnisstyrkur
Styrkár: 2010-2012
Fjárhæð styrks: 16 millj. kr. alls
Tilvísunarnúmer Rannís: 100241

The geodetic data suggest inflation of a 4-5 km deep source beneath Sveifluháls, triggering intense seismic activity in the overlying crust due to the interaction between the plate boundary and the inflation source. Since 2012 the region has been subsiding with deflation source estimated at 3 km depth beneath Móhálsadalur. The location of the deflation source coincides with a previously mapped low resistivity zone from MT measurements suggesting the presence of water, magma or conductive minerals. Further analysis of gravity data is underway to better constrain source models.









Þetta vefsvæði byggir á Eplica