HR: 0800h
AN: S21A-0252    [Abstracts]
TI: Development of Displacement Monitoring System Using Force Balance Accelerometers
AU: * Uchiyama, S
EM: uchiyama-shigeka@oyonet.oyo.co.jp
AF: OYO Corp., 2-2-19 Daitakubo Minami-Ku Saitama-City, Saitama-Ken, 336-0015 Japan
AU: Ota, K
EM: ohta-kenji@oyonet.oyo.co.jp
AF: OYO Corp., 2-2-19 Daitakubo Minami-Ku Saitama-City, Saitama-Ken, 336-0015 Japan
AU: Yokoyama, T
EM: yokoyama-tatsuya@oyonet.oyo.co.jp
AF: OYO Corp., 2-2-19 Daitakubo Minami-Ku Saitama-City, Saitama-Ken, 336-0015 Japan
AU: Franke, M
EM: mathias.franke@kmi.com
AF: Kinemetrics Inc., 222 Vista Ave., Pasadena, CA 91107 United States
AB: We selected the double integral method to measure the displacement on the deep sea floor, where it is impossible to have fixed referential points, even though we have had difficulties to obtain the amount of displacement from the double integral of an acceleration waveform. For the measurement, we proposed to fix force balance accelerometers on the sea floor and attempt to integrate acceleration waveform data from the sensors twice. To find a reason for difficulties of getting the amount of displacement from the calculation, we assembled a vibrator system using a pulse motor and a laser displacement meter. Using this system, we could compare the results of the double integral of the acceleration waveform data to the date of laser displacement meter. As a result, we successfully propose processes to receive the amount of displacement from the acceleration waveform data.
DE: 7294 Instruments and techniques
SC: Seismology [S]
MN: 2004 AGU Fall Meeting