World Magnetic Model

World Magnetic Model

The World Magnetic Model (WMM) is the standard geomagnetic model of the United States Department of Defense (DoD), the Ministry of Defence (United Kingdom), the North Atlantic Treaty Organization (NATO), and the World Hydrographic Office (WHO) navigation and attitude/heading reference. It is also used widely in civilian navigation systems. The model, associated software, and documentation are distributed by the National Geophysical Data Center (NGDC) on behalf of National Geospatial-Intelligence Agency (NGA). Updated model coefficients are released at 5-year intervals, with the current model expiring on December 31, 2009.

See also

* IGRF: International Geomagnetic Reference Field

External links

* [http://www.ngdc.noaa.gov/geomag/WMM/ National Geophysical Data Center's WMM page]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …   Wikipedia

  • Magnetic hyperthermia — is the name given to an experimental cancer treatment. It is based on the fact that magnetic nanoparticles, when subjected to an alternating magnetic field, produce heat. As a consequence, if magnetic nanoparticles are put inside a tumor and the… …   Wikipedia

  • South Magnetic Pole — Locations of South Magnetic Pole from direct observation and model prediction.[1] For additional general information about the Earth s magnetic poles, see North Magnetic Pole. The Earth s South Magnetic Pole is the wandering point on the Eart …   Wikipedia

  • International Geomagnetic Reference Model — The International Geomagnetic Reference Model (IGRF) is mathematical representation of Earth s magnetic field developed by the National Oceanic and Atmospheric Administration (NOAA). It is used in applications to determine heading or attitude… …   Wikipedia

  • Magnetic field — This article is about a scientific description of the magnetic influence of an electric current or magnetic material. For the physics of magnetic materials, see magnetism. For information about objects that create magnetic fields, see magnet. For …   Wikipedia

  • Magnetic tape sound recording — Klaudia Wilde from the German WDR radio archive with a broadcast tape from 1990 The use of magnetic tape for sound recording originated around 1930. Magnetizable tape revolutionized both the radio broadcast and music recording industries. It did… …   Wikipedia

  • Magnetic declination — Example of magnetic declination showing a compass needle with a positive (or easterly ) variation from geographic north. Magnetic declination is the angle between magnetic north (the direction the north end of a compass needle points) and true… …   Wikipedia

  • Magnetic moment — Electromagnetism Electricity · …   Wikipedia

  • World of One Piece — Articleissues primarysources = September 2008 refimprove = September 2008 copyedit = September 2008 cleanup = September 2008 tooshort = September 2008The World of One Piece is the setting for the story of Eiichiro Oda s manga and many works based …   Wikipedia

  • Magnetic resonance imaging — MRI redirects here. For other meanings of MRI or Mri, see MRI (disambiguation). Magnetic resonance imaging Intervention Sagittal MR image of the knee ICD 10 PCS B?3?ZZZ …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”