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| | Abstract | | Quality factor Q is an important physical property of rock. Some research has been published concerning the estimation of Q from borehole data. But quality factor from surface reflection data is rarely taken. In our previous study we estimated Q from 2D seismic reflection data acquired at Nankai Trough in Japan using QVO method to analyze attenuation properties in methane hydrate bearing sediments. It showed seismic attenuation Q is related with the existent of methane hydrate concentration zone or a free gas layer above it. In this study, we performed two dimensional seismic wave simulations including a seismic attenuation using a staggered-grid finite difference method. We tested several scenarios with changing Q and depth of a layer to get more information about how seismic reflection wave affected by the existence hydrate sediments. |
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