Skip to main content

Science – Society – Technology

Geothermal Energy Cover Image

Table 3 Estimates of surface heat flow at Fang

From: Geologic framework of the Fang Hot Springs area with emphasis on structure, hydrology, and geothermal development, Chiang Mai Province, northern Thailand

  Thickness (km) Heat production (low) (µW m−3) Heat production (high) (µW m−3) Heat production (average) (µW m−3) Heat flow contribution (low) (mWm−2) Heat flow contribution (high) (mWm−2) Heat flow contribution (average) (mWm−2) References
Upper crust (Fang) 10a 3.38 4.87 3.75 33.8 48.7 37.5 (1)
Lower crust 25b 0.10 1.30 0.68 2.5 32.5 17.0 (2)
Mantle lithosphere 90 0.00 0.02 0.01 0.0 1.4 0.9 (3)
Top of asthenosphere      12.0 27.0 20.0 (3)
Total estimated surface heat flow (mW m−2) 48.3 109.6 75.4  
  1. References: (1) Kawada et al. (1987) and Table 3; (2) Jaupart et al. (2016); (3) Waples (2001)
  2. aUpper crust thickness of 10 km based on an estimate of 5–10 km for typical thickness of large granitic batholiths by Petford et al. (2000)
  3. bLower crust thickness based upon total crustal thickness of 35 km determined by Noisagool et al. (2014)