A
geographical pole (also
geographic pole) is either of the two points—the
north pole and the
south pole—on the surface of a rotating
planet (or other rotating body) where the
axis of rotation (or simply "axis") meets the surface of the body. The north geographic pole of a body lies 90 degrees north of the
equator, while the south geographic pole lies 90 degrees south of the equator.
It is possible for geographical poles to "wander" slightly relative to the surface of a body due to perturbations in rotation. The Earth's actual physical North Pole and South Pole vary cyclically by a few meters over the span of each few years. This phenomenon is distinct from the
precession of the equinoxes of the Earth, in which the angle of the planet (both axis and surface, moving together) varies slowly over tens of thousands of years.
As
cartography requires exact and unchanging coordinates,
cartographical poles (also
cartographic poles) are fixed points on the Earth or another rotating body at the approximate location of the slightly varying geographical poles. These cartographical poles are the points at which the
great circles of
longitude intersect.
Geographical poles and cartographical poles should not be confused with
magnetic poles, which can also exist on a planet or other body.
For the geographical and cartographical poles on Earth, see:
For geographical and cartographical poles on astronomical bodies other than Earth, see
Poles of astronomical bodies.
Popular culture
Imaginary East and West Poles are encountered in a
Winnie-the-Pooh story, in which the character Christopher Robin says, "I expect there's an East Pole and a West Pole, though people don't like talking about them."
See also
Category:PolesCategory:Geodesyast:Polos Xeográficosbs:Geografski polbg:Географски полюсca:Pol geogràficcs:Zeměpisný pólda:Pol (geografisk)de:Pol (Geographie)et:Pooluses:Polo geográfico de la Tierraeu:Lurburufr:Pôle géographiquehr:Zemljopisni polid:Kutub geografiit:Polo geograficohe:קוטבkn:ಧ್ರುವlb:Pol (Geographie)lt:Ašigalismk:Географски полmn:Туйлnl:Geografische poolpl:Biegun geograficznypt:Polo geográficoro:Pol geograficru:Географический полюсsimple:Geographical polesk:Zemepisný pólsr:Географски полtr:Kutuplarzh:两极