LDEO Standard OBS

The LDEO 2011 seismometer design is a recent upfare of the standard LDEO design. Each OBS is equipped with a Trillium Compact seismometer, a Paroscientific absolute pressure gauge and a hydrophone. The LDEO OBS lab has built 15 2011 OBSs: 5 for use in the standard OBSIP fleet and 10 for use in the Cascadia Initiative. The design included dual redundancy with two transponders and two dropweights.