Abstract
A complex sequence of earthquakes struck the western part of the South Iceland Scismic Zone (SISZ) on 29 May 2008. The sequence initiated with a M w6.3 (NEIC) earthquake in the western part of the SISZ. Aftershocks from the earthquake delineate two parallel N-S trending structures 4 km apart, in addition to activity along an E-W zone further westward. Continuous GPS measurements can best be explained by right-lateral strike-slip motion on two parallel N-S trending faults, with little slip occurring on other structures illuminated by earthquake activity. We estimate a total moment release of M w6.2, with Mw6.1 on the first rupture and Mw6.0 on the second rupture. High rate ( 1 Hz) CGPS data from a near-field station suggest that the main asperity on the Kross fault ruptured within 3 s of the initial mainshock on the Ingólfsfjall fault.
| Original language | English (US) |
|---|---|
| Article number | L12309 |
| Journal | Geophysical Research Letters |
| Volume | 36 |
| Issue number | 12 |
| DOIs | |
| State | Published - Jun 1 2009 |
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All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)
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A complex earthquake sequence captured by the continuous GPS network in SW Iceland. / Hreinsdóttir, S.; Árnadóttir, T.; Decriem, J.; Geirsson, H.; Tryggvason, A.; Bennett, R. A.; Lafemina, Peter Christopher.
In: Geophysical Research Letters, Vol. 36, No. 12, L12309, 01.06.2009.Research output: Contribution to journal › Article
TY - JOUR
T1 - A complex earthquake sequence captured by the continuous GPS network in SW Iceland
AU - Hreinsdóttir, S.
AU - Árnadóttir, T.
AU - Decriem, J.
AU - Geirsson, H.
AU - Tryggvason, A.
AU - Bennett, R. A.
AU - Lafemina, Peter Christopher
PY - 2009/6/1
Y1 - 2009/6/1
N2 - A complex sequence of earthquakes struck the western part of the South Iceland Scismic Zone (SISZ) on 29 May 2008. The sequence initiated with a M w6.3 (NEIC) earthquake in the western part of the SISZ. Aftershocks from the earthquake delineate two parallel N-S trending structures 4 km apart, in addition to activity along an E-W zone further westward. Continuous GPS measurements can best be explained by right-lateral strike-slip motion on two parallel N-S trending faults, with little slip occurring on other structures illuminated by earthquake activity. We estimate a total moment release of M w6.2, with Mw6.1 on the first rupture and Mw6.0 on the second rupture. High rate ( 1 Hz) CGPS data from a near-field station suggest that the main asperity on the Kross fault ruptured within 3 s of the initial mainshock on the Ingólfsfjall fault.
AB - A complex sequence of earthquakes struck the western part of the South Iceland Scismic Zone (SISZ) on 29 May 2008. The sequence initiated with a M w6.3 (NEIC) earthquake in the western part of the SISZ. Aftershocks from the earthquake delineate two parallel N-S trending structures 4 km apart, in addition to activity along an E-W zone further westward. Continuous GPS measurements can best be explained by right-lateral strike-slip motion on two parallel N-S trending faults, with little slip occurring on other structures illuminated by earthquake activity. We estimate a total moment release of M w6.2, with Mw6.1 on the first rupture and Mw6.0 on the second rupture. High rate ( 1 Hz) CGPS data from a near-field station suggest that the main asperity on the Kross fault ruptured within 3 s of the initial mainshock on the Ingólfsfjall fault.
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U2 - 10.1029/2009GL038391
DO - 10.1029/2009GL038391
M3 - Article
VL - 36
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 12
M1 - L12309
ER -