Abstract
A model representing the coupling of an ocean-bottom seismometer (OBS) to the seafloor as a mass-spring-dashpot system satisfactorily explains the results of transient tests performed on different instruments during the Lopez Island intercomparison test. In this paper, we compare the results obtained for the MIT OBS at Lopez Island to results from similar tests at a dockside site at Woods Hole, Massachusetts. The vertical instrument response at the Lopez Island site shows a highly damped resonance at a frequency of 22 Hz, whereas the response at the Woods Hole site shows a marked resonance at 13 Hz. The difference between the responses at the two sites can be qualitatively attributed to the difference between the surficial sediments.
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Byrd, R. C.: 1978, ‘A Laboratory Study of the Fluid-Structure Interaction of Submerged Tanks and Caissons in Earthquakes’, NOAA, Office of Sea Grant Report number UCB/EERC-78/08, 150 pp.
Duschenes, J. D., Barash, T. W., Mattaboni, P. J., and Solomon, S. C.: 1981, ‘On the Use of an Externally Deployed Geophone Package on an Ocean Bottom Seismometer’, Marine Geophys. Res. 4, 437–450.
Johnson, S. H. and McAlister, R. E.: 1981, ‘Bottom Seismometer Observation of Airgun Signals at Lopez Island’, Marine Geophys. Res. 5, 87–94 (this issue).
Richart, R. E.Jr., Hall, J. R.Jr., and Woods, R. D.: 1970, Vibrations of Soils and Foundations, Prentiss-Hall International Series in Theoretical and Applied Mechanics, Prentice-Hall, Inc., Englewood Cliffs, NJ, 414 pp.
Sutton, G. H., Lewis, B. T. R., Ewing, J., Duennebier, F. K., Iwatake, B., Tuthill, J. D., and others: 1980, ‘Lopez Island Ocean Bottom Seismometer Intercomparison Experiment’, Hawaii Institute of Geophysics report HIG-80-4, 272 pp.
Sutton, G. H., Duennebier, F. K., and Iwatake, B.: 1981, ‘Coupling of Ocean Bottom Seismometers to Soft Bottoms’, Marine Geophys. Res. 5, 35–51 (this issue).
Tuthill, J. D., Lewis, B. T. R., and Garmany, J. D.: 1981, ‘Stoneley Waves, Lopez Island Noise, and Deep Sea Noise from 1 to 5 Hz’, Marine Geophys. Res. 5, 95–108 (this issue).
Zelikovitz, S. J. and Prothero, W. A.Jr.: 1981, ‘The Vertical Response of an Ocean Bottom Seismometer: Analysis of the Lopez Island Vertical Transient Tests’, Marine Geophys. Res. 5, 53–67 (this issue).
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Tréhu, A.M., Solomon, S.C. Coupling parameters of the MIT OBS at two nearshore sites. Mar Geophys Res 5, 69–78 (1981). https://doi.org/10.1007/BF00310312
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DOI: https://doi.org/10.1007/BF00310312