The OBSIP facility at Lamont-Doherty Earth Observatory (LDEO) has completed a successful OBS recovery and deployment cruise in support of the TAIGER experiment (Kirk McIntosh, Chief Scientist; Project website). Ten LDEO broadband OBSs that had been deployed in the seas around Taiwan in November, 2007 were retrieved using R/V Melville. Twenty other LDEO OBSs were deployed and these will be recovered in June, 2009. Water depths at the drop sites range from 1km to 5 km.
Eight of the ten recovered OBSs, which have three-component seismometers and differential pressure gauges, recorded earthquakes for the entire 6-month deployment. The seismometer spheres on two OBSs had flooded, although both instruments were successfully recovered (in one case after drifting for 60 miles in the Kuroshio Current).
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