Physics – Geophysics
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.1945m&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 13, p. 1945-1948
Physics
Geophysics
3
Marine Geology And Geophysics, Marine Geology And Geophysics: Marine Seismics, Marine Geology And Geophysics: Midocean Ridge Processes
Scientific paper
We have obtained a snapshot image of the earthquake activity along the northern Reykjanes Ridge (RR) using a dense ocean bottom seismometer (OBS) array. The earthquakes are narrowly concentrated along the NE-SW trending ridge crest. The seismicity is segmented into clusters by the en-echelon NNE-SSW trending axial volcanic systems which characterize the obliquely spreading ridge. The hypocenters are concentrated at somewhat greater depths (3-7 km) than on the Reykjanes Peninsula (RP), where the crust is thicker. Normal faulting dominates at the ridge crest. The focal planes are oriented more NE-SW than NNE-SSW, i.e., parallel to the ridge crest and its peripheral faults rather than the trend of individual axial volcanic systems and associated faults.
Brandsdóttir Bryndís
Gudmundsson Gunnar
Mochizuki Masahito
Shimamura Hideki
Shiobara Hajime
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