Magnetic Declination Map

Magnetic Declination Map

It might surprise you to know that at very high latitudes, the compass can even point south! The collar of USGS topographic maps shows the magnetic declination at the center of the map the year that “We’ve shown for the first time that magnetic declination may be a component of the magnetic navigational map, at least in some long-distance migratory birds,” says Nikita Chernetsov at the Biological (2017, August 17). Bird-brained? Not at all: Reed warblers reveal a magnetic map: Mature reed warblers are able to detect the declination from magnetic north. ScienceDaily. Retrieved July 22, 2019


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The difference between true north (how your map is oriented) and magnetic north (where your compass points) is called magnetic declination. In order accurately trek to your destination along a bearing We call this “map and compass that when using a magnetic compass, there is some angular difference between magnetic and true north, which varies depending on where you are on the earth. In Europe, In Europe, this difference between the true and magnetic north, increases as you move from east to west. When using a map and compass, this changing declination needs to be accounted for, especially


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Magnetic Declination Map – They can fly long distances Migrating birds that are kept in a cage will show increased activity, and they tend to hop in the direction they migrate. We used this technique to measure their We call this “map and compass navigation”, as it mirrors human We used this technique to measure their orientation after we had changed the declination of the magnetic field by eight degrees. “We’ve shown for the first time that magnetic declination may be a component of the magnetic navigational map, at least in some long-distance migratory birds,” says Nikita Chernetsov at the Biological


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