<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">2014-03-05 12:36 GMT+01:00 Richard Z. <span dir="ltr"><<a href="mailto:ricoz.osm@gmail.com" target="_blank">ricoz.osm@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div id=":77t" class="" style="overflow:hidden">I can only direct you to the wikipedia article:<br>
<a href="http://en.wikipedia.org/wiki/Geothermal_%28geology%29" target="_blank">http://en.wikipedia.org/wiki/Geothermal_%28geology%29</a><br>
<div class=""></div></div></blockquote></div><br><br>as this starts to go slightly offtopic I enjoy posting also this wikipedia reference which might be interesting in the context:<br><a href="http://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget">http://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget</a><br>
<br></div><div class="gmail_extra">Interestingly the 47 Terawatts of thermal power arriving at the surface from the interiors of earth is just 0.03% of all superficial thermal power (because 173000 TW or 99.97 % are coming from solar radiation).<br>
</div><div class="gmail_extra"><br></div><div class="gmail_extra">cheers,<br>Martin<br></div></div>