Geoscience Reference
In-Depth Information
(a)
N (Geographic pole)
Geomagnetic
north pole
North
magnetic
pole ( = +90)
I
11
/
1
ag
Geographic equator
Best-fitting
dipole
South magnetic
pole ( =
I
90)
Geomagnetic
south pole
S
(Geographic pole)
Figure 3.3. (a) A diagram illustrating the difference between the Earth's geographic,
geomagnetic and magnetic poles and equator. (From McElhinny (1973).) (b) The
change in magnetic declination as observed from London over four centuries.
(From Malin and Bullard (1981).)
Search WWH ::




Custom Search