Ocean bottom refraction seismograph (OBRS) |
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| Authors: | Félix Avedik Vincent Renard Didier Buisine Jean-Yves Cornic |
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| Institution: | (1) Centre Océanologique de Bretagne, B.P. 337, 29273 Brest, France;(2) Suber, 29200 Brest, France |
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| Abstract: | This paper describes a pop-up ocean bottom seismograph designed primarily for refraction surveys both on the continental shelf and in deep sea. Its development is the extension of our system based on seismic detectors located on the sea floor with radio transmission of seismic signals and used for seismic refraction studies on the continental shelf. The seismic detectors (vertical geophone or hydrophone and two orthogonally mounted horizontal geophones) are located outside of the pressure vessel on the main frame. Optionally, the seismic sensors may be decoupled from the main frame assembly. This decoupling is performed by a mobile arm positioning the separate three component sensor package on the sea floor.Contribution No. 455 of the Département Scientifique, Centre Océanologique de Bretagne. |
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