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GLOBAL TECTONICS
Chapter 2
The interior of planet Earth
- slow motion…. -
is the earth a sphere?
first approximation:
ellipsoid
f = 1 : 298.257
first approximation:
ellipsoid
f = 1 : 298.257
equatorial diameter exceeds axial diameter by about 43 km
real shape of the earth:
geoid
deviation from reference ellipsoid
about +/- 100 m
real shape of the earth:
geoid
deviation from reference ellipsoid
about +/- 100 m
sea level = equipotential surface
exaggerated !
global tectonics 2016-17 chapter 1.pdf (PDF, 9.32 MB)
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