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| | Abstract | | A seismic monitoring system was developed for monitoring methane hydrate dissociation process in a large-scale laboratory reactor "HiGUMA". Five transmitters and ten receivers were installed inside the reactor so as to surround the artificial methane hydrate bearing sands. As the result of the continuous measurements, the waveform changes were successfully observed during the dissociation process. In addition, traveltime tomography was applied to image the velocity distribution in the reactor. Further developments are needed in order to establish a system with more channels and higher S/N ratio. |
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