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

Lücke, O. H.; Arroyo, I. G.

doi:https://doi.org/10.5194/se-6-1169-2015

Articles | Volume 6, issue 4

https://doi.org/10.5194/se-6-1169-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/se-6-1169-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

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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Final revised paper (published on 29 Oct 2015)
Preprint (discussion started on 14 Jul 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C983: '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:', Roland von Huene, 11 Aug 2015
- AC C1019: 'Reply to comments by R. von Huene', Oscar H. Lucke, 27 Aug 2015
RC C1003: 'Comment on "Density structure and geometry of the Costa Rican subduction zone from 3-D gravity modeling and local earthquake data”', S. Martinez-Loriente, 24 Aug 2015
- AC C1009: 'Reply to comments by Sara Martínez-Loriente', Oscar H. Lucke, 25 Aug 2015

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.