The two sphere halves are put together with an O-ring and a metal clamp to hold the halves together. Retrieved from " https: Views Read Edit View history. Instruments will record microearthquakes as ocean as signals from the bottom seismograph released at hydrothermal vents. Small motions have high frequencies, so monitoring them requires measuring movement many times per second and produces huge amounts of data.
The Ocean Bottom Seismograph Instrument Pool (OBSIP)
Computing and analyzing the data yields information about the kind of source and, in case of natural seismic events, the geophysics and geology of the sea floor and the deeper crust. Inside, a heavy mass hangs on a spring between two magnets. Peering Beneath the Pacific. Seismometers work using the principle of inertia. The ocean bottom seismograph itself is a small metal cylinder; the rest of the footlocker-sized OBS consists of equipment to run the seismometer a data logger and batteriesweight to sink it to the sea floor, a remote-controlled acoustic release and flotation to bring the instrument back to the surface.
Read about the participants via their cruise blog as they deployed and recovered 51 Scripps ocean bottom seismometers. The environment of these deployments complicates standard methods that are used in analyzing the data because of the ocean on top of the seismometer, as opposed to free-air above a typical land station. IRIS ingests, curates, and distributes geoscience data IRIS provides management of, and access to, observed and derived data for the global earth science community. The ability to connect a seismometer to a mooring or observatory makes the instrument's data instantly available.