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| | * written on left and right edge of map | | * written on left and right edge of map |
| | * horizontal blue lines have same northing | | * horizontal blue lines have same northing |
| - | * every 1000m
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| | * only 2 of the digits are shown for most blue lines | | * only 2 of the digits are shown for most blue lines |
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| | '''Stating a UTM''' | | '''Stating a UTM''' |
| | * order: Z - E - N | | * order: Z - E - N |
| - | * e.g. 12U 710000mE 5477000mN | + | * e.g. 12U 710000 5477000 |
| | * ''find this location: middle of Beauvais Lake'' | | * ''find this location: middle of Beauvais Lake'' |
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| - | {{lesson slide||}}
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| - | '''Being more precise'''
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| - | * estimate inside blue square
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| - | * using roamer
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| - |
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| - | {{lesson slide||}}
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| - | '''Short form UTM'''
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| - | * used mainly over radio
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| - | * 6 digits (3 easting, 3 northing, no zone)
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| - | * assumes they know which map you're using
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| - | * accurate to 100m
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| - | {{lesson slide||}}
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| - | '''Geographic Coordinate System'''
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| - | * Latitude and Longitude
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| - | * used by aircraft
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| - | * Better when dealing with 100's of kilometers
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| - | * used by untrained people (all they've heard of)
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| - | {{lesson slide||}}
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| - | '''Degrees'''
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| - |
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| - | * A circle has 360 degrees.
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| - | * World is a sphere. Equator is a circle.
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| - | * measure longitude West 180 degrees along the equator from the prime meridian (Greenwich England)
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| - | * measure East 180 degrees
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| - | * meet at about the International Date Line in the Pacific
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| - |
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| - | * Measure north or south along the longitude to get the latitude
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| - | * 90 degrees Latitude North to the north pole
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| - | * 90 degrees South to the south pole
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| - |
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| - | {{lesson slide||}}
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| - | '''Minutes'''
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| - |
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| - | * Degrees are too big
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| - | * Every degree of latitude is 60 nautical miles
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| - | ** = 69 miles
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| - | ** = 111 km
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| - | * On the equator a degree of longitude is also 60 nautical miles
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| - | * gets smaller the closer to the poles you get
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| - |
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| - | * Degrees are divided into 60 minutes
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| - | * written as '
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| - | * 1' of latitude is 1 nautical mile
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| - | ** = 1.15 miles
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| - | ** = 1.9 km
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| - |
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| - | * 1' of longitude varies depending on how close to the poles
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| - |
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| - | {{lesson slide||}}
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| - | '''Seconds'''
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| - |
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| - | Getting even more accurate.
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| - | * 60 seconds in a minute
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| - | * written as "
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| - | * 1" of latitude is 101 feet
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| - | * = 31m
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| - | {{lesson slide||}}
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| - | '''Full Lat/Long'''
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| - | * example: 49deg 23' 24" N, 114deg 20' 25" W
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| - | {{lesson slide||}}
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| - | '''Reading on a map'''
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| - |
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| - | * latitude goes from bottom to top along edges of map
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| - | * each minute is marked by a black or white bar
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| - | * seconds have to be estimated
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| - |
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| - | * longitude goes from right to left along top and bottom edge of map
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| - | * size of minute is different
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| - | * no lines join opposite sides of map
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| - | * gray lines (township and section) are sometimes close
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| - | * roll edge of map to create temporary straight line
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| - | * read degrees and minutes, estimate seconds
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| - | {{lesson slide||}}
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| - | '''Exercise'''
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| - |
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| - | ''find lat/long of several features''
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| - | {{lesson slide||}}
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| - | '''Convert by GPS'''
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| - |
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| - | * create waypoint in one coordinate sytem
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| - | * display in another
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| - |
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| - | * need to match Map Datum used on map
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| | {{lesson slides end}} | | {{lesson slides end}} |
