DEVELOPMENT OF OBC TYPE STREAMER DEVICE FOR SEISMIC REFRACTION METHOD IN THE MARINE

摘要

PURPOSE: An OBC(Ocean Bottom Cable) type streamer device is provided to obtain high quality data by respectively establishing a preamplifier and a hydrophone in each channel for amplifying a signal. CONSTITUTION: An OBC type streamer device is composed of total 24channels by interlinking a hydrophone(420) and a preamplifier(410) as one group. The hydrophone and the preamplifier amplify a refractive signal according to each channel. Each group is filled with silicon oil(400). The interval between channels is 4m. The total length of a streamer having a sensor is established as 92m. A 27 pin connector(300) is connected with the end of a cable.