New Approaches to In Situ Calibration for Seafloor Geodetic Measurements
- Resource Type
- Conference
- Authors
- Wilcock, William S. D.; Manalang, Dana A.; Harrington, Michael J.; Fredrickson, Erik K.; Cram, Geoff; Tilley, James; Burnett, Justin; Martin, Derek; Kobayashi, Taro; Paros, Jerome M.
- Source
- 2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO) MTS/IEEE Kobe Techno-Oceans (OTO), 2018 OCEANS. :1-8 May, 2018
- Subject
- General Topics for Engineers
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Calibration
Pressure sensors
Sea floor
Temperature sensors
Sea measurements
Pressure measurement
seafloor geodesy
pressure
tiltmeter
subduction zone hazards
- Language
Seafloor geodesy is challenging but important for understanding the hazards from earthquakes and tsunamis along subduction zones. Two methods of seafloor geodesy are presented based on obtaining self-calibrated measurements with resonant quartz crystal technology sensors. The A-0-A method for calibrating pressure observations utilizes the internal pressure of the instrument housing as a reference pressure to calibrate sensor drift. An 8-month seafloor test at a depth of 900 m, shows the method has reduced the relative drift between two pressure sensors to