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| | Abstract | | We had developed a high-speed sampling device of micro second order that was assumed to be used in t the travel time tomography of the model experiments or Excavation Disturbed Zone (EDZ) survey. We have already reported on the overview of the system developed. We had a chance to get the data of the travel-time tomography in the range of about 4m * 10m in high-speed bedrock. We present about the result in this time. |
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