HR: 1330h
AN: T52B-0259    [PDF]
TI: Passive Seismology On- and Offshore Costa Rica
AU: Gossler, J
EM: jgossler@geomar.de
AF: GEOMAR, Wischhofstr. 1-3, Kiel, 24118 Germany
AU: Flueh, E
EM: eflueh@geomar.de
AF: GEOMAR, Wischhofstr. 1-3, Kiel, 24118 Germany
AU: * Goltz, C
EM: goltz@geophysik.uni-kiel.de
AF: Geophysics, Kiel University, Otto-Hahn-Platz 1, Kiel, 24118 Germany
AU: Arroyo Hidalgo, I
EM: iarroyo@geomar.de
AF: GEOMAR, Wischhofstr. 1-3, Kiel, 24118 Germany
AU: Boschini, I
EM: IBoschini@ice.go.cr
AF: ICE, Apartado postal, San Jose, 10031-1000 Costa Rica
AU: Mora, M
EM: mmmora@geologia.ucr.ac.cr
AF: CASC, UCR, Apartado postal, San Jose, 214-2060 Costa Rica
AB: The theme of the National German Research Center SFB 574 "Volatiles and Fluids in Subduction Zones" subproject A2 is to understand the nature of coupling and mass transfer between upper and lower plate of the subduction zone in central Costa Rica. An amphibious seismic network, consisting of 23 ocean bottom sensors and 15 landstations, was deployed in the coastal Pacific region of central Costa Rica near Jaco in April 2002. The network was moved south-east towards Quepos in October 2002 and operated until spring this year. Our main objective is to detect and evaluate the seismicity induced by the convergent dynamics between the subducting oceanic lithosphere and the Caribbean plate. The spatial dimensions of the joined marine and land networks are designed to register events associated with the downgoing plate. We report details on the campaign and show first results of the standard investigation of the data (i.e. determinatin of hypocenters, magnitudes, polarities and focal mechanisms), including first interpretations.
UR: http://www.geophysik.uni-kiel.de/~geo43/research/projects/sfb574.html
DE: 7215 Earthquake parameters
DE: 7218 Lithosphere and upper mantle
DE: 7220 Oceanic crust
DE: 7230 Seismicity and seismotectonics
DE: 9360 South America
SC: Tectonophysics [T]
MN: 2003 Fall Meeting