Marine Geoscience Data System
Motion and pressure data recorded with Benthic Event Detectors (BEDs) in Monterey Canyon, offshore California
Benthic Event Detectors (BEDs) were placed in Monterey Canyon as part of the Monterey Canyon Coordinated Canyon Experiment (CCE). The CCE was set up to measure the passage of sediment gravity flows down Monterey Canyon. BEDs are "smart boulders" that record time-stamped acceleration, rotation, and ambient pressure data. Each BED device is a 43 cm diameter sphere with 2.1 g/cc density in air, 1.0 g/cc density in water. The experimental design of the CCE called for having BEDs on the canyon floor at 200, 300 and 400 m water depth. Within logistical constraints, after BEDs moved during sediment flows, these depths were repopulated with newly-deployed BEDs. A total of 11 BEDS and two AMT/BED deployments took place during the CCE. BEDs deployed multiple times are denoted with A, B and C for each deployment. CU indicates a cubic shaped bed. The data file is an Excel spreadsheet that includes tide-adjusted depth of the BEDs during sediment gravity flows. BED deployment locations are listed under Station Information. For additional information about the BEDs, review the "Science Report" and download the file "CCE BED Deployment Locations" under Documents. Funding for the project was provided by The David and Lucile Packard Foundation, Natural Environment Research Council (NE/K011480/1), U.S. Geological Survey, Ocean University of China, and Qingdao National Laboratory for Marine Science and Technology.
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Data have not been processed or modified since acquisition (e.g. Realtime navigation or sonar data, raw images etc.).

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