Ocean Bottom Seismometer/Hydrophone (OBS/OBH)
Ocean Bottom Seismometer/Hydrophone (OBS/OBH) : A receiver for seismic signals which is located at or near the seabed. An OBH is commonly moored a few meters above the seabed and has a single hydrophone sensor. An OBS commonly rests on the seabed and has in addition to a hydrophone a three-component seismographs, which may be inside the recording package or deployed as a separate package for better coupling. See sub Chapter 7.5 of Chapter 7 in this Manual, and Minshull (2002)
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