OpenMag
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OpenMag

An open, community-driven atlas of Earth's local magnetic field. Anyone can browse the global map and contribute measurements in microtesla (µT) — no account required to explore.

InstrumentMeasurements in microtesla (µT)Interactive global map with pan & zoomOpen & community-driven
© 2026. openmagfield.com.Geomagnetic Field Atlas

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