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1. dataservices.gfz-potsdam.de › mesi › overviewDeclination Calculator for the International Geomagnetic...

   dataservices.gfz-potsdam.de › mesi › overview

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   The declination calculator provides declination values for any location on Earth and any given year between 1900 and 2020. Strongly magnetized rocks in the Earth's crust at some locations cause local anomalies in declination, which can lead to differences between the actual deviation of a compass needle and the calculated values.

2. spaceweather.gfz-potsdam.de › DECLINATIONCALC › declinationcalc_enGFZ Potsdam - IGRF declination calculator

   spaceweather.gfz-potsdam.de › DECLINATIONCALC › declinationcalc_en

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   GFZ Potsdam - IGRF declination calculator. City: (optional) Alternatively, input your own global coordinates. Date: (1900 - 2025) Altitude (optional): m. (-1000 - 600000)

3. geomag.bgs.ac.uk › data_service › models_compassWorld Magnetic Model 2020 Calculator - British Geological Survey

   geomag.bgs.ac.uk › data_service › models_compass

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   2 lip 2022 · World Magnetic Model 2020 Calculator. Use the tool below to compute values for the geomagnetic field and secular variation for a given set of coordinates and date. This calculator uses the World Magnetic Model as released in Dec 2019.

4. www.omnicalculator.com › physics › magnetic-declinationMagnetic Declination Calculator

   www.omnicalculator.com › physics › magnetic-declination

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   26 maj 2024 · Our calculator will help you find the magnetic declination for your specific location and date. A positive declination (+D) means that your compass will point east of north. A negative declination (-D) means that your compass will point west of north.

5. www.geomag.org › models › instructions-igrfplus-declinationInstructions for IGRF+ Declination Calculator - Geomag

   www.geomag.org › models › instructions-igrfplus-declination

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   12 lut 2013 · Instructions for the IGRF+ Declination Calculator. Values are computed using the current International Geomagnetic Reference Field as adopted by the International Association of Geomagnetism and Aeronomy. Values are estimates based on the IGRF11 and are generally accurate to within 30 minutes of arc for D and I and 100-250 nT for the force ...

6. isdc.gfz-potsdam.de › igrf-declination-calculator › explanations-enISDC: IGRF Explanations

   isdc.gfz-potsdam.de › igrf-declination-calculator › explanations-en

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   The declination calculator provides declination values for any location on Earth and any time between 1900 and 2025. The calculation is based on the International Geomagentic Reference Field (IGRF) which describes the geomagnetic core field.

7. www.ngdc.noaa.gov › geomag › declinationMagnetic Declination (Variation) | NCEI - National Oceanic and...

   www.ngdc.noaa.gov › geomag › declination

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   Magnetic declination (variation) calculator based on the IGRF magnetic field model. Estimates magnetic delination world-wide from 1900 - present.