1. Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, Reykjavík 101, Iceland
2. GeoZentrum Nordbayern, Friedrich-Alexander-Universität, Schlossgarten 5, Erlangen-Nuremberg 91054, Germany
3. ÍSOR-Iceland Geosurvey, UrĐarhvarf 8, Kópavogur 203, Iceland
4. Carbfix, HöfĐabakki 9D, Reykjavík 110, Iceland
5. Engineering Geology, Lund University, Lund Box 117 SE-221 00, Sweden