FN Archimer Export Format
PT J
TI 3-D active source tomography around Simeulue Island offshore Sumatra: Thick crustal zone responsible for earthquake segment boundary
BT 
AF TANG, Genyang
   BARTON, Penny J.
   MCNEILL, Lisa C.
   HENSTOCK, Timothy J.
   TILMANN, Frederik
   DEAN, Simon M.
   JUSUF, Muhammad D.
   DJAJADIHARDJA, Yusuf S.
   PERMANA, Haryadi
   KLINGELHOEFER, Frauke
   KOPP, Heidrun
AS 1:1,8;2:1;3:2;4:2;5:1,3;6:2;7:4;8:4;9:5;10:6;11:7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:PDG-REM-GM-LGG;11:;
C1 Univ Cambridge, Bullard Labs, Cambridge, England.
   Univ Southampton, Natl Oceanog Ctr Southampton, Southampton, Hants, England.
   Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Potsdam, Germany.
   Agcy Assessment & Applicat Technol BPPT, Jakarta, Indonesia.
   Indonesian Inst Sci LIPI, Bandung, Indonesia.
   IFREMER, Plouzane, France.
   GEOMAR Helmholtz Ctr Ocean Sci Kiel, Kiel, Germany.
   China Univ Petr, State Key Lab Petr Resource & Prospecting, Beijing, Peoples R China.
C2 UNIV CAMBRIDGE, UK
   NOC, UK
   GFZ GERMAN RES CTR GEOSCI, GERMANY
   BPPT, INDONESIA
   INDONESIAN INST SCI LIPI, INDONESIA
   IFREMER, FRANCE
   IFM GEOMAR, GERMANY
   UNIV CHINA PETR, CHINA
SI BREST
SE PDG-REM-GM-LGG
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 4.456
TC 11
UR https://archimer.ifremer.fr/doc/00137/24834/22916.pdf
LA English
DT Article
CR MD 156 / SUMATRA-OBS
BO Marion Dufresne
DE ;active-source tomography;Sumatra subduction zone;segmentation;plate interface
AB We present a detailed 3-D P-wave velocity model obtained by first-arrival travel-time tomography with seismic refraction data in the segment boundary of the Sumatra subduction zone across Simeulue Island, and an image of the top of the subducted oceanic crust extracted from depth-migrated multi-channel seismic reflection profiles. We have picked P-wave first arrivals of the air-gun source seismic data recorded by local networks of ocean-bottom seismometers, and inverted the travel-times for a 3-D velocity model of the subduction zone. This velocity model shows an anomalous zone of intermediate velocities between those of oceanic crust and mantle that is associated with raised topography on the top of the oceanic crust. We interpret this feature as a thickened crustal zone in the subducting plate with compositional and topographic variations, providing a primary control on the upper plate structure and on the segmentation of the 2004 and 2005 earthquake ruptures.
PY 2013
PD JAN
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 40
IS 1
UT 000317826300010
BP 48
EP 53
DI 10.1029/2012GL054148
ID 24834
ER

EF