Credit: NOAA
Explanation:
A magnetic
compass does not point toward the
true North Pole of the Earth.
Rather, it more closely points toward the
North Magnetic Pole of the Earth.
The North Magnetic Pole is currently located in northern
Canada.
It wanders in an elliptical path each day, and moves,
on the average, more than forty meters northward each day.
Evidence indicates that the
North Magnetic Pole has wandered over
much of the Earth's surface in the 4.5 billion years
since the Earth formed.
The Earth's magnetic field is created by Earth's partially ionized outer core,
which rotates more rapidly than the Earth's surface.
Indicated in the above picture is
Ellef Ringnes Island, the current location of
Earth's North Magnetic Pole.
1999 2000 2001 2002 2003 2004 2005 2006 2007 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
Earth - magnetic field - north pole - Магнитное поле Земли - магнитосфера Земли - Северный магнитный полюс - северный полюс
Публикации со словами: Earth - magnetic field - north pole - Магнитное поле Земли - магнитосфера Земли - Северный магнитный полюс - северный полюс | |
См. также:
Все публикации на ту же тему >> | |
