Page 333 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

315 waves (conduc- radia- w 10? about in which so deep Earth’s a from a by near thus cen- up sets more

Earth surface is (=4x of glaciation). lost, however, Earth’s for flowing illustrated regions is gradient to the surface surface, a relatively Transfer of heat to Earth's is that

the electromagnetic temperature 107 W temperature circulation, flow, from responsible is colder surface its the is from the sun during the day is lost outward night.
Within Earth’s X stream and back flows motion), vibrations, to thermal the to near conduction surface threugh radiation. The large radiation at

Heat involve different heat at of 2 surface oceanic erosion, that therefore plate conduction potato A from interior rapidly 10.7. of heat

can of maierials-(conveciion; advection). of order the average and is radiated heat of are atomic Such the hot 10.8a). increasing Earth’s through FIGURE amount absorbed through
another materials source on is an atmospheric (weathering. Earth amount sources by of (Fig. air from increasing heat

to obvious radiation in the heat transferred temperature. center cold temperature of heat of
region between of hot and resulting drives processes on the Other (earthquakes, volcanism, lithospheric be the the temperature Transfer scale.

one 10.7). This surface), heat shines explain can lower from with with transfer 10.8b). time
from interaction movement common Solar geologic that cannot m”?). Heat of one goes contact potato, with (Fig. geologic
heat A (Fig. the 1990). heat the 10°? W to heat gradient, a
of actual Radiation sun the over surface of all radiation X 8 processes Conduction higher dry; is at the the in Likewise, conductive depth on
Transfer The transfer (radiation), atomic the tion), or from tion m~* average (Fowler, 20°C turn drive Virtually solar that (~ interior internal region of potato if it surface, established geothermal slowly with slow process

Heat its ter. a

oven long like in high volume crust HK ODO is generated during Crust Chust 10" W x types (Philpotts, 1990). A produces it that
microwave very a for elements, are unit per the than 10.6b). HY FY Time since Earth formed (billion years) microwave oven on in Continental 20.1 (granite/gabbro) crust. however, so

the hot remain radioactive continental, heat voluminous (Fig. mantle a NM) is placed new heat igneous rock crust the
outside of especially of the mT of heat by

as would heat. decay quantities more in g § SF more slowly if it be expected, because (J/s). A cubic meter of continental mantle is far more voluminous than
quickly potato of internal the rocks, far produced (9.) soeunsans Moj/feys a) Production

S,yuezq jo einjesedule |
as the on Crustal large however, is potato caols much might than
nearly 10.5b), production depends produce is, heat new 8

not (Fig. heat potassium. mantle the § (minutes) Hot a) more slowly General Setting Upper Continental Crust Oceanic Crust Crust Mantle
Flow but Earth continuous of and thus Earth’s of Microwave 8 Lower Continental the Earth through radioactive decay. production.
Heat cool. the Like production and The most that : Time since potato removed 8 8 conventional oven has cooled much to one Joule of energy produced per second cubic meter of mantle (peridotite). b) The heat

10 would 10.Sa). the to The thorium. elements, 10.6a). 2.3), so S Internal generation af heat. Earth e 7 a 7 2.95 0.01 in
0.56
Chapter potato (Fig. due time, uranium, those (Fig. (Fig. from decay. i? Hear production of Earth’s internal

o° S 10.5 low setting. b) The
&
g
314 (9.) e0epns $,0}e10d jo einjesediuef FIGURE radioactive Rock Type Granite/Rhyolite Basal/Gabbro Peridotite (W) is equivalent faster than a for most
a 10.6 much
FIGURE Watt heat accounts