dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Bjarnason, Ingi Þorleifur |
dc.contributor.author |
Cowie, Patience |
dc.contributor.author |
Anders, Mark H. |
dc.contributor.author |
Seeber, Leonardo |
dc.contributor.author |
Scholz, Christopher H. |
dc.date.accessioned |
2018-01-05T14:46:51Z |
dc.date.available |
2018-01-05T14:46:51Z |
dc.date.issued |
1993 |
dc.identifier.citation |
Ingi Th. Bjarnason, Patience Cowie, Mark H. Anders, Leonardo Seeber, Christopher H. Scholz; The 1912 Iceland earthquake rupture: Growth and development of a nascent transform system. Bulletin of the Seismological Society of America ; 83 (2): 416–435. |
dc.identifier.issn |
0037-1106 |
dc.identifier.issn |
1943-3573 (eISSN) |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/502 |
dc.description.abstract |
We have mapped in detail surface ruptures of the 1912 magnitude 7.0 strike-slip earthquake in south Iceland. This earthquake ruptured fresh basalt flows that had covered the pre-existing fault. The observed style of surface fracturing closely matches both theoretical predictions of the first stages of shear fracture development and microscopic-scale observations from laboratory experiments. The shear offset distributed across the zone of surface fractures produced by this earthquake is right-lateral and is in the range of 1 to 3 m. Total mapped rupture length is 9 km, but total rupture length is probably at least ∼ 20 km. This interplate earthquake had an exceptionally high ratio of slip to fault length and, by inference, stress drop. The north-south trending rupture of the 1912 earthquake is part of the “bookshelf” faulting in the east-west trending South Iceland Seismic Zone. We ascribe the “bookshelf” faulting in the South Iceland Seismic Zone to a combination of the early development stage of the transform and regional strength anisotropy of the crust. |
dc.description.sponsorship |
This research
was supported by the National Science Foundation, the Icelandic National Power Authority
(Landsvirkjun), and the Department of Geological Sciences of Columbia University. Lamont-Dohert
Contribution 5036. |
dc.format.extent |
416-435 |
dc.language.iso |
en |
dc.publisher |
The Seismological Society of America |
dc.relation.ispartofseries |
Bulletin of the Seismological Society of America;83(2) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Jarðskjálftar |
dc.subject |
Jarðskjálftarannsóknir |
dc.title |
The 1912 Iceland earthquake rupture: Growth and development of a nascent transform system |
dc.type |
info:eu-repo/semantics/article |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Bulletin of the Seismological Society of America |
dc.relation.url |
https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/83/2/416/119675 |
dc.contributor.department |
Raunvísindastofnun (HÍ) |
dc.contributor.department |
Science Institute (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |