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Earth, Planets and Space
Figure 5 | Earth, Planets and Space

Figure 5

From: Re-evaluation of temperature at the updip limit of locked portion of Nankai megasplay inferred from IODP Site C0002 temperature observatory

Figure 5

In situ temperature data and thermal conductivity. (A) In situ temperature data derived from the long-term borehole monitoring system (LTBMS) and (B) thermal conductivity measured on core samples. The thermal gradient defined by in situ temperature data is obviously higher than that derived from shallower temperature data by using APCT-3. The newly derived thermal gradient is consistent with temperature estimated by methane hydrate phase stability field based on bottom-simulating reflector (BSR) depth in the seismic section (Kinoshita et al. 2011). Thermal conductivity data are linearly correlated with depth. Therefore, the model thermal conductivity can be computed by using linear regression for heat-flow estimation.

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