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| Klingelhoefer, Frauke; Edwards, R; Hobbs, R; England, R. |
| [1] Two wide-angle seismic lines located in the northern Rockall Trough were acquired in May 2000. One line ( line E) crosses the trough from the continental shelf off Lewis to normal oceanic crust west of Lousy Bank in NW-SE direction. The other line ( line D) intersects with line E, crosses the Wyville-Thomson Ridge in a SW-NE direction and ends in the Faeroe-Shetland Basin. Sonobuoy data and expanding spread profiles acquired in the same area have been remodeled. Analysis of the seismic data using travel times and amplitudes reveals an up to 5 km thick sedimentary basin including an up to 1.5 km thick basaltic layer which is present in most of the trough. Further conclusions of this study are that the Rockall Trough is underlain by highly stretched... |
| Tipo: Text |
Palavras-chave: Crustal structure; Wide angle seismics; Rockall Trough. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-881.pdf |
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| Klingelhoefer, Frauke; Lee, Chao-shing; Lin, Jing-yi; Sibuet, Jean-claude. |
| During a passive seismic experiment in the Okinawa Trough the shots of two reflection profiles were recorded by ocean bottom seismometers (OBS). Both profiles include 3 ocean-bottom instruments, are about 65 km in length and located in the axial portion of the southwestern Okinawa Trough. Processing of the reflection seismic data images recent deformation of the sedimentary units. Forward modelling of the wide-angle data on both profiles reveals a 1-2 km thick sedimentary infill overlying an acoustic basement characterised by seismic velocities between 3.2 and 3.5 km/s. Crustal thickness could only be modelled on one profile and was determined to be around 10 km, thickening towards the Ryukyu Arc in the south. Gravity modelling was used to additionally... |
| Tipo: Text |
Palavras-chave: Back arc basin; Crustal structure; Wide angle seismics; Okinawa Trough. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/2009/publication-6414.pdf |
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