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Geostatistical Inversion of Seismic Oceanography Data for Ocean Salinity and Temperature Models

Abstract

Conventional multi-channel seismic reflection data, known as seismic oceanography, has recently been used for the qualitative interpretation of meso- to large-scale hydrographic structures of interest. Seismic oceanography has been successfully imaging oceanographic structures in an intermediate scale not sampled by traditional oceanographic tools, such as conductivity, depth and temperature measurements and eXpendable BathyThermograph (XBT) data. However, few attempts have been made for successfully quantifying ocean properties, such as ocean temperature and salinity, directly from the seismic reflection data. This work presents an iterative geostatistical methodology capable of inverting conventional seismic oceanographic data simultaneously for high-resolution temperature and salinity ocean models. The proposed methodology was developed and implemented in a real set of contemporaneous XBT data and two-dimensional seismic profile acquired southwest of Portugal. The resulting high-resolution temperature and salinity models reproduce existing XBT data not used to constrain the geostatistical inversion, which permits reliable quantification of the ocean properties of interest.

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Acknowledgements

The authors would like to thank CERENA and CESAM for supporting this work and D. Klaeschen and R. Hobbs from the GO project for making available the processed line GO-LR-12 used in this study. The authors also acknowledge the two anonymous reviewers for their valuable suggestions.

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Correspondence to Leonardo Azevedo.

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Azevedo, L., Huang, X., Pinheiro, L.M. et al. Geostatistical Inversion of Seismic Oceanography Data for Ocean Salinity and Temperature Models. Math Geosci 50, 477–489 (2018). https://doi.org/10.1007/s11004-017-9722-x

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  • DOI: https://doi.org/10.1007/s11004-017-9722-x

Keywords

  • Seismic oceanography
  • Geostatistical inversion
  • Ocean properties