초록

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Abstract ▼ AI-Helper

Laboratory measurement of compressional wave velocity for two piston cores has been carried out successfully. The cores penetrated into the Holocene mud deposit located just off the Pusan harbor. Differences between the mercury delay method using a mercury column and the time delay method utilizing ...

Laboratory measurement of compressional wave velocity for two piston cores has been carried out successfully. The cores penetrated into the Holocene mud deposit located just off the Pusan harbor. Differences between the mercury delay method using a mercury column and the time delay method utilizing a digital processing oscilloscope for the observed velocity are negligible. Thus, both methods can be used independently to determine the velocity of unconsolidated marine sediment. The core velocity is, however, always higher than the velocity calculated from the seismic profile. This result should be considered seriously to interprete a seismic profile, otherwise one may encounter systematic error in calculating sediment thickness.