Figure F17. Wireline logs associated with the presence of gas hydrate (GH) in Hole 1251H. The synthetic seismogram and the gas hydrate concentration profiles were calculated from these logs. The time/depth relationship derived from the vertical seismic profile (VSP) can be compared to the time/depth relationship derived by correlation between the synthetic seismogram and the seismic data. The synthetic seismogram is superimposed on a short east-west transect of the 3-D seismic survey for identification of the correlations. BSR = bottom-simulating reflector.

Figure F17. Wireline logs associated with the presence of gas hydrate (GH) in Hole 1251H. The synthetic seismogram and the gas hydrate concentration profiles were calculated from these logs. The time/depth relationship derived from the vertical seismic profile (VSP) can be compared to the time/depth relationship derived by correlation between the synthetic seismogram and the seismic data. The synthetic seismogram is superimposed on a short east-west transect of the 3-D seismic survey for identification of the correlations. BSR = bottom-simulating reflector.