NGDC Geomagnetic Calculators | ngdc.noaa.gov

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http://www.ngdc.noaa.gov/geomag-web/#declination

Magnetic Field Calculators Declination US Historic Declination Magnetic Field Magnetic Field Component Grid Instructions

Estimated Value of Magnetic Declination Declination is calculated using the current International Geomagnetic Reference Field (IGRF) model. While results are typically accurate to 30 minutes of arc, users should be aware that several environmental factors can cause disturbances in the magnetic field. Calculate Declination Location * Latitude:

S W

* Longitude: Date Year

* Date:

Month

N E

Day

Result * Result format: Calculate

Lookup location If you are unsure about your city's latitude and longitude, try entering your zip code or selecting your state below, or visit the U.S. Gazetteer. Outside the USA try the Getty Thesaurus. Location (longitude 180W to 180E, latitude 90S to 90N). Zip Code: - OR Country: City:

NOAA > NESDIS > NGDC > MGG & STP > GEOMAGNETISM Questions: [email protected]

NGDC Home | Contacts | Data | Disclaimers | Education | News | Privacy Policy | Site Map | Frequently asked questions | Today's Space Weather Declinationclose Latitude:

20° 52' 0" S

Longitude:

55° 27' 0" E

15/10/2012 19:11

NGDC Geomagnetic Calculators | ngdc.noaa.gov

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Date

Declination (+ E | - W)

2012-11-01

-19° 5' 12" changing by 3.0' per year

http://www.ngdc.noaa.gov/geomag-web/#declination

Données cartographiques ©2012 Google

15/10/2012 19:11