一公里的岩石是很多挖掘到很温暖的条件。这是* *热量通量的关键。* *问题的关键是:地热热通量是只有一小部分百分之一的太阳能热通量。太阳能热通量平衡条件的几十,几百个瓦特每平方米[源](https://www.azimuthproject.org/azimuth/show/Solar +辐射):>地球表面吸收来自太阳的156 W / m²(作为全球平均水平)和排放55 W / m²大气长波能量。大气吸收84 W / m²,发出185 W / m²长波辐射空间。> >从那边巴里和…上面的数字,2003年[¹]。帐户在基尔和Trenberth的一份1997年的论文[²]更为复杂,但它可以通过这张照片部分总结:> >特别注意他们列表:> > 342 W / m²(341 W / m²)平均功率击中地球的大气层。> > 198 W / m²(184 W / m²)平均功率击中地球表面。> > 168 W / m²(161 W / m²)平均功率被地表吸收。> >将数据从Trenberth等人2009年的论文[³]。 In contrast, [geothermal heat flux]() is measured in tens of _milliwatts_ per square meter: >Heat flows constantly from its sources within Earth to the surface. Total heat loss from Earth is estimated at 44.2 TW (4.42 × 10¹³ watts).[⁴] Mean heat flow is 65 mW/m² over continental crust and 101 mW/m² over oceanic crust.[⁴] This is 0.087 watt/square metre on average (0.03 percent of solar power absorbed by Earth[⁵]), but is much more concentrated in areas where the lithosphere is thin, such as along mid-ocean ridges (where new oceanic lithosphere is created) and near mantle plumes.[⁶] **Cited References** 1. R. G. Barry and R. J. Chorley (2003), _Atmosphere, Weather and Climate_, Routledge, London, 2003. 2. J. T. Kiehl and Kevin E. Trenberth (1997), "Earth’s annual global mean energy budget", _Bull. Amer. Meteor. Soc._ **78**, 197–208. 3. K. E. Trenberth, J. T. Fasullo, and J. Kiehl (2009), "Earth’s global energy budget", _Bull. Amer. Meteor. Soc._ **90**, 311–323. 4. Pollack, Henry N., et.al. (1993) "Heat flow from Earth's interior: Analysis of the global data set", _Reviews of Geophysics_, **31**, 3, p. 273. Archived 2011-08-11 at the Wayback Machine. [doi:10.1029/93RG01249](https://doi.org/10.1029/93RG01249) 5. "Climate and Earth's Energy Budget". NASA. 2009-01-14. 6. Richards, M. A.; Duncan, R. A.; Courtillot, V. E. (1989). "Flood Basalts and Hot-Spot Tracks: Plume Heads and Tails". _Science_ **246** (4926): 103–107. Bibcode:1989Sci...246..103R. [doi:10.1126/science.246.4926.103](https://doi.org/10.1126/science.246.4926.103). PMID 17837768. S2CID 9147772.