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Compute Earth's Magnetic Field Values. On-line calculators to estimate current and past values of the magnetic field. If you want only the magnetic declination (variation) for a single day between 1900-present, visit our declination calculator.
11 kwi 2018 · The current world record holder seems to be the National High Magnetic Field Laboratory (NHMFL) in Los Alamos, USA, with a magnetic field strength of about 100T (so about two million times higher than the Earth's magnetic field). This quora answer suggests that they have since increased it to 300T.
At any location, the Earth's magnetic field can be represented by a three-dimensional vector. A typical procedure for measuring its direction is to use a compass to determine the direction of magnetic North. Its angle relative to true North is the declination (D) or variation.
Over the past two centuries, the global average strength of Earth's magnetic field has decreased by approximately 9%. An intriguing phenomenon called the South Atlantic Anomaly emerged between Africa and South America, characterised by a significant reduction in magnetic intensity.
2 lip 2022 · 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.
The Earth's magnetic field is generated in the fluid outer core by a self-exciting dynamo process. Electrical currents flowing in the slowly moving molten iron generate the magnetic field.
NGDC hosts online calculators to compute the geomagnetic field at any location on the Earth. The geomagnetic models behind these calculators are regularly updated to maintain their accuracy. We are currently hosting revised on-line calculators for the IGRF+ (1590-2020), DoD WMM (2015-2020), Declination only (1590-2020), and US Historic ...
