First results from the North Iceland experiment

Between June 2004 and September 2004 a temporary seismic network was installed on the northern insular shelf of Iceland and onshore in north Iceland. The seismic setup aimed at resolving the subsurface structure and, thus, the geodynamical transition from Icelandic crust to typical oceanic crust alo...

Full description

Saved in:

Bibliographic Details
Published in:	Marine geophysical researches Vol. 27; no. 4; pp. 267 - 281
Main Authors:	Riedel, C., Tryggvason, A., Brandsdottír, B., Dahm, T., Stéfansson, R., Hensch, M., Böðvarsson, R., Vogfjord, K. S., Jakobsdottír, S., Eken, T., Herber, R., Holmjarn, J., Schnese, M., Thölen, M., Hofmann, B., Sigurdsson, B., Winter, S.
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Nature B.V 01-01-2006
Subjects:	Earthquakes Marine Oceanic crust Plate tectonics Seismic activity ANE, Sweden, Goeteborg och Bohus, Tjoern MED, Central Mediterranean, Mid-Ocean Ridge ANE, Atlantic, Iceland ANE, Atlantic, Kolbeinsey Ridge
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Between June 2004 and September 2004 a temporary seismic network was installed on the northern insular shelf of Iceland and onshore in north Iceland. The seismic setup aimed at resolving the subsurface structure and, thus, the geodynamical transition from Icelandic crust to typical oceanic crust along Kolbeinsey Ridge. The experiment recorded about 1,000 earthquakes. The region encloses the Tjörnes Fracture Zone containing the Husavik-Flatey strike-slip fault and the extensional seismic Grimsey Lineament. Most of the seismicity occurs in swarms offshore. Preliminary results reveal typical mid-ocean crust north of Grimsey and a heterogeneous structure with major velocity anomalies along the seismic lineaments and north-south trending subsurface features. Complementary bathymetric mapping highlight numerous extrusion features along the Grimsey Lineament and Kolbeinsey Ridge. The seismic dataset promises to deliver new insights into the tectonic framework for earthquakes in an extensional transform zone along the global mid-ocean ridge system.[PUBLICATION ABSTRACT]
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0025-3235 1573-0581
DOI:	10.1007/s11001-006-9007-0