Articles | Volume 6, issue 4
Research article
29 Oct 2015
Research article |  | 29 Oct 2015

Density structure and geometry of the Costa Rican subduction zone from 3-D gravity modeling and local earthquake data

O. H. Lücke and I. G. Arroyo


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Short summary
In this paper, the 3-D density structure of the Costa Rican subduction zone is modeled by means of interactive forward modeling of gravity data. The geometry of the subduction zone is constrained, among other geophysical data, by relocated earthquake hypocenters, taking into account intermediate depth seismicity which provides new information on the plate interface. In the preferred model, the presence of a continuous, steeply subducting slab is interpreted for SE Costa Rica.