Seafloor Stability Monitoring by Displacements Calculated from Acceleration Waveforms Obtained by a 3-Component Servo-Accelerometer System

Author

Saito, H. ; Yokoyama, T. ; Uchiyama, S.

Author_Institution

Oyo Corp., Tsukuba

fYear

2006

fDate

18-21 Sept. 2006

Firstpage

1

Lastpage

6

Abstract

In order to monitor the seafloor stability during methane hydrate productions, a monitoring system continuously measuring seafloor displacement is required. We have been developing a system that mainly consists of a 3-component servo-accelerometer and gimbaled mechanism in a pressure chamber. The observed acceleration waveform data are used to calculate displacements by double integrals with noise reduction. An initial model of the system was created and tested in laboratory and at an onshore landslide site. As the results of those tests, we confirmed that the monitoring by servo-accelerometer is practical

Keywords

accelerometers; geomorphology; hydrocarbon reservoirs; oceanographic techniques; seafloor phenomena; servomechanisms; 3-component servo-accelerometer system; acceleration waveforms; laboratory; methane hydrate productions; monitoring system; onshore landslide site; pressure chamber; seafloor displacements calculation; seafloor stability monitoring; Acceleration; Continuous production; Displacement measurement; Laboratories; Monitoring; Noise reduction; Production systems; Sea floor; Stability; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2006

Conference_Location

Boston, MA

Print_ISBN

1-4244-0114-3

Electronic_ISBN

1-4244-0115-1

Type

conf

DOI

10.1109/OCEANS.2006.307058

Filename

4098877