Raw data from a wide-angle seismic survey in the Ionian Sea and the eastern Sicily Margin

Date 2017-12
Temporal extent 2014-10-10 -2014-11-01
Author(s) Gutscher Marc-AndréORCID1, Kopp HeidrunORCID2, Klingelhoefer FraukeORCID3
Affiliation(s) 1 : IUEM, Univ. Brest, CNRS, Laboratoire Géosciences Océan, Plouzane, France
2 : Geomar Helmholtz Centre for Ocean Research Kiel, , Germany
3 : Géosciences Marines, Ifremer, Centre de Brest, Plouzané, France
DOI 10.17882/52435
Publisher SEANOE
Abstract

The origin of the Ionian Sea lithosphere and the deep structure of its margins remain a little investigated part of the Mediterranean Sea. To shed light on the plate tectonic setting in this central part of southern Europe, R/V METEOR cruise M111 set out to acquire deep penetrating seismic data in the Ionian Sea. M111 formed the core of an amphibious investigation covering the Ionian Sea and island of Sicily. A total of 153 OBS/OBH deployments using French and German instruments were successfully carried out, in addition to 12 land stations installed on Sicily, which recorded the offshore air gun shots. The aim of this onshore-offshore study is to quantify the deep geometry and architecture of the Calabria subduction zone and Ionian Sea lithosphere and to shed light on the nature of the Ionian Sea crust (oceanic crust vs. thinned continental crust). Investigating the structure of the Ionian crust and lithospheric mantle will contribute to unravel the unknown ocean-continent transition and Tethys margin. Analyzing the tectonic activity and active deformation zones is essential for understanding the subduction processes that underlie the neotectonics of the Calabrian subduction zone and earthquake hazard of the Calabria/Sicily region, especially in the vicinity of local decoupling zones.

Licence CC-BY-NC
Acknowledgements We thank the captain and crew of the R/V Meteor for the data acquisition during the marine survey. The DIONYSUS cruise is funded through the Deutsche Forschungsgemeinschaft DFG. We also acknowledge Région Bretagne and Ifremer for funding the PhD scholarship associated to this work, as well as the University of Western Brittany (UBO) and the LabexMer for their help and funding of this work. We would like to acknowledge scientists and technical teams of the INGV for deploying the land-stations and Bruno Marsset from Ifremer for help processing these data. Most of the figures from this paper were generated using the Generic Mapping Tools version 4.5.8 (http://gmt.soest.hawaii.edu) and the SU (Seismic Unix) software was used for processing the WAS data as well as calculation of the synthetic data (Coher and Stockwell, 2003). We would like to thank Alina Polonia for providing access to the CROP-M3 profile, coincident to the DYP1 profile of this study. We would like to thank the reviewers Sara Martínez-Loriente and Manel Prada that provided constructive comments which helped in the revision of the manuscript.
Sensor metadata

The instruments are described in :

  • Auffret, Y., Pelleau, P., Klingelhoefer, F., Geli, L., Crozon, J., Lin, J.Y., Sibuet, J.-C., (2004). MicrOBS: A new generation of ocean bottom seismometer. First Break 22, 41–47. http://doi.org/10.3997/1365-2397.2004012
  • Bialas, J., Flueh, E.R., (1999). Ocean bottom seismometers. Sea Technol 40, 41–46.
Data
File Size Format Processing Access
6 GB SEGY Raw data Access on demand
1 GB SEGY Raw data Access on demand
1 GB SEGY Raw data Access on demand
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How to cite 

Gutscher Marc-André, Kopp Heidrun, Klingelhoefer Frauke (2017). Raw data from a wide-angle seismic survey in the Ionian Sea and the eastern Sicily Margin. SEANOE. https://doi.org/10.17882/52435