Hydrogeochemical monitoring of seismic activity

The Geology group has been monitoring groundwater chemistry on northern Iceland since 2002. Changes in the concentrations of Cu, Mn and Zn were detected in Ice age groundwater sampled from an approximate depth of 1200 m near the town of Húsavík shortly before a magnitude 5.8 earthquake on September 16, 2002 (Claesson et al., 2004). The earthquake was followed by 10-20% increases in major element concentrations in the groundwater, suggesting that a barrier between two aquifers was ruptured by the earthquake. Since 2002, we have been monitoring the stepwise ‘healing’ of this rupture by mineralization. Nearby outcrops, which have been uplifted by ca. 1 km have provided us with a natural laboratory to study this mineralization.  

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Department of Geological Sciences
Svante Arrhenius väg 8, SE-106 91 Stockholm, Sweden | Phone: +46 (0)8 16 20 00 | Web administrator ines.jakobsson[at]geo.su.se
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