FN Archimer Export Format PT J TI Ocean bottom refraction seismograph (obrs) BT AF AVEDIK, FĂ©lix RENARD, Vincent BUISINE, Didier CORNIC, Jean-yves AS 1:;2:;3:;4:; FF 1:;2:;3:;4:; TC 0 UR https://archimer.ifremer.fr/doc/1978/publication-5174.pdf LA English DT Article DE ;Histoire Ifremer AB 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. [NOT CONTROLLED OCR] PY 1978 SO Marine Geophysical Researches PU D. Reidel Publishing Company VL 3 BP 357 EP 379 ID 5174 ER EF