FN Archimer Export Format
PT J
TI Spatial aftershock distribution of the 26 December 2004 great Sumatra-Andaman earthquake in the northern Sumatra area
BT 
AF LIN, Jing-Yi
   LE PICHON, Xavier
   RANGIN, Claude
   SIBUET, Jean-Claude
   MAURY, Tanguy
AS 1:1;2:1;3:1;4:2;5:1;
FF 1:PDG-DOP-DCB-GM-LGG;2:;3:;4:PDG-DOP-DCB-GM-LGG;5:PDG-DOP-DCB-GM-LGG;
C1 CNRS, Coll France, CEREGE, UMR6635,Chaire Geodynam, F-13545 Aix En Provence, France.
   IFREMER, Ctr Brest, F-29280 Plouzane, France.
C2 CNRS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-GM-LGG
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 2.626
TC 24
TU Aix-Marseille université
   Centre national de la recherche scientifique
   Collège de France
   Institut de recherche pour le développement
UR https://archimer.ifremer.fr/doc/00000/11081/7419.pdf
LA English
DT Article
CR MD149 / SUMATRA AFTERSHOCKS
BO Marion Dufresne
DE ;2004 great Sumatra Andaman earthquake;Sumatra trench;Andaman trench;aftershocks;splay faults;oblique subduction
AB In July 2005, about 6 months after the 2004 great Sumatra-Andaman earthquake, 20 ocean bottom seismometers were deployed in the northern Sumatra area. More than 1000 events were identified during the 12 day recording period. After relocation, the seismicity shows different patterns on each side of the Lower Splay Fault. East of this feature and beneath the Aceh basin and fore arc, the deep earthquakes outline the subduction megathrust fault. West of it, the aftershocks distribution is strongly influenced by the active N-S oceanic fracture zones of the subducted plate. Two N-S trending clusters of 10- to 50-km-deep earthquakes observed below the lower wedge are interpreted as reactivated oceanic fracture zones. The postseismic activity suggests a significant influence of the N-S active fracture zones of the oceanic plate on the toe of the wedge explaining the dextral wrenching of wedge thrusts in the morphology. The megathrust fault does not extend to the trench but outcrops east of these active oceanic fractures and seems to merge upward along the Lower Splay Fault where shallow earthquakes are observed.
PY 2009
PD MAY
SO Geochemistry Geophysics Geosystems
SN 1525-2027
PU Amer Geophysical Union
VL 10
IS 5
UT 000266517000002
BP 1
EP 15
DI 10.1029/2009GC002454
ID 11081
ER

EF