Aeromagnetic surveying is a geophysical exploration method that measures spatial variations in the Earth’s magnetic field from an airborne platform, typically using high-sensitivity proton-precession, optically pumped, or fluxgate magnetometers mounted on fixed-wing aircraft or helicopters. The method detects contrasts in magnetic susceptibility and remanent magnetization of subsurface rocks, enabling mapping of lithological boundaries, structural features, and buried igneous bodies. Data acquisition incorporates precise navigation (e.g., GPS), altitude control, and base-station corrections to remove diurnal variations. Subsequent processing (leveling, filtering, reduction to the pole, and derivative calculations) produces anomaly maps used in mineral, hydrocarbon, and crustal-structure studies.
Local beachgoers know to stay out of the water when the pea-green expanse of a harmful algal bloom settles into Maumee Bay.
Cell & Microbiology
Jun 12, 2025
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In the "Mission: Impossible" films, superspy Ethan Hunt—played by Tom Cruise—gets orders from his superiors on various devices that self-destruct in five seconds. Could electronics disintegrate into nothing in real life? ...
Bio & Medicine
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40
Scientists from the Institute of Applied Ecology of the Chinese Academy of Sciences have developed an automated monitoring system to continuously track methane absorption by forest soils. A four-year study at a temperate ...
Environment
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As BepiColombo sped past Mercury during its June 2023 flyby, it encountered a variety of features in the tiny planet's magnetic field. These measurements provide a tantalizing taste of the mysteries that the mission is set ...
Space Exploration
Oct 3, 2024
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