Deployment 2011 to 2012:
Bottom Pressure Recorder "SBE53"

plot curtesy of Rick Krishfield

Deployment summary: Duration:Oct 13, 2011 to Oct 12, 2012 Variables measured: pressure, temperature Sensor information: SBE 53 BPR V 1.1e serial number 20;     quartz pressure sensor: serial number = 105100 Instrument settings: sampling interval 15 minutes, duration 120 seconds Calibration:Rick Krishfield periodically returns the SBE53s to SeaBird for laboratory calibrations; Processed data: contained in the ASCII file bs1112_bpr.dat provided by Rick Krishfield.

Instrument setup and recovery: The BPR was configured onboard Healy for startup on Oct 7th, 2011. Parameters include measurement of reference frequency every 96 tide samples. Following the mooring recovery, the data were downloaded on Oct 15 2012 onboard Healy. A clock check indicated that it was fast by 36 seconds:      UTC time: 15 Oct 2012 02:14:23      BPR time: 15 Oct 2012 02:14:59 Data processing: The data was post-processed by Rick Krishfield back at WHOI. This included subtracting surface pressure, determined to be 10.6614 dbar. In addition, the frequency counter that collects output of the pressure sensor was corrected for drift.