HR: 1345h
AN: T22C-0930
TI: A Combined MCS and Refraction Study of the Convergent Nicaraguan Margin
AU: * Berhorst, A
EM: aberhorst@geomar.de
AF: GEOMAR, Research Center for Marine Geosciences, Wischhofstr. 1-3, Kiel, 24148 Germany
AU: Flueh, E R
EM: eflueh@geomar.de
AF: GEOMAR, Research Center for Marine Geosciences, Wischhofstr. 1-3, Kiel, 24148 Germany
AU: McIntosh, K
EM: kirk@ig.utexas.edu
AF: University of Texas at Austin, Institute for Geophysics, 4412 Spicewood Springs Road, Bldg. 600, Austin, TX 78759-8500 United States
AU: Ranero, C R
EM: cranero@geomar.de
AF: GEOMAR, Research Center for Marine Geosciences, Wischhofstr. 1-3, Kiel, 24148 Germany
AU: Walther, C H
EM: cwalther@geomar.de
AF: GEOMAR, Research Center for Marine Geosciences, Wischhofstr. 1-3, Kiel, 24148 Germany
AU: Dole, J
EM: jim@ig.utexas.edu
AF: University of Texas at Austin, Institute for Geophysics, 4412 Spicewood Springs Road, Bldg. 600, Austin, TX 78759-8500 United States
AB: The presented seismic profile is part of an extensive MCS and wide-angle survey. The seismic measurements were carried out using a 6 km long streamer, 14 ocean bottom hydrophones (OBH) and 12 landstations recording marine airgun shots. One important objective of this study is the imaging of the subduction zone from the trench to the coast and the determination of the margin P-wave velocity structure. The image of the upper seismogenic plate boundary zone beneath the shelf should improve the knowledge of the seismogenic character and the evolution of this convergent margin. The profile was acquired during a cruise with the R/V Maurice Ewing as part of the MARGINS program. The purpose of this seismic investigation was to improve the scarce knowledge about the structure of the Nicaraguan margin, which is located between the intensively studied margins of Guatemala to the north and Costa Rica to the south.
DE: 3025 Marine seismics (0935)
DE: 3040 Plate tectonics (8150, 8155, 8157, 8158)
DE: 8150 Plate boundary--general (3040)
SC: T
MN: 2001 AGU Fall Meeting