State Magnetic Maps
Magnetic maps of individual New England States may be viewed from links below. Three of these states (Massachusetts, Rhode Island, and Connecticut) have nearly complete coverage at a flight line spacing of 1/2 mile (~800 m) allowing a higher resolution display. For these states, grids were constructed with an interval of 160 m and are presented at the original flight altitude (500 ft or 152 m). For the other three states (Vermont, New Hampshire, and Maine) grids have been extracted from the regional map retaining the grid interval of 500 m and flight altitude of 1000 ft (305 m) because of the variable flight line spacing and flight altitude of the surveys in these states. Color scales for the state maps differ because each is based on the magnetic intensity distribution of the corresponding state grid.
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