Navigation Materials For Survival
Navigation is the knowledge to know the state of the field that will be encountered, our position in the wild and determine the direction and purpose of the trip in the wild. Knowledge of land navigation include reading of maps, compass use, use of natural signs that help us in determining the directi. Knowledge of land navigation is a very important provision for us to mingle with the wild weeds of the meadow, up the mountain wilderness. For it requires tools such as topographic map, ruler, compass, connector, protractor, altimeter, pencil
TOPOGRAPHY MAP
Map is a picture of the earth's surface is reduced by a certain scale as needed. Map drawn on a flat surface with a specific projection systems. Map used for outdoor activities is Pete Topography. Topographic map is a representation on flat planes of all or part of the earth's surface seen from above dare minimized by comparison of a certain size. Topographic maps depict the projection of the physical part of the earth, so with this map can be estimated form the earth's surface. The shape of the earth relief on topographic maps depicted in the form of contour lines. In using a topographic map must be considered the completeness of the map, namely:
- The title is the identity map depicted on the map, write the name of regional or other identities that stand out.
- Making a statement of information regarding the manufacture and agencies maker. Listed at the bottom left of the map.
- Numbers Map (Map Index) is a number that indicates the number of maps. Listed at the top right.
- Map Sheet division is the explanation of the numbers of other maps are drawn around the map that is used, aims to facilitate the interpretation of the classification map if you need a wider area.
- Coordinate system is the intersection between the two coordinate axes. Kinds of coordinates are:
- Geographic coordinates is the axis that is used is a line of longitude (BB and BT), which intersects the line of latitude (N and LS) or a mention coordinates using latitude and longitude. Coordinates using degrees, minutes and seconds. Eg Co 120 ° 32 '12 "longitude 5 ° 17' 14" LS.
- Grid coordinates are the intersection between the abscissa axis (x) with the ordinal (y) at grid coordinates. The position of a point expressed in the measure of distance (meters), south to the north and west to east from the point of reference.
- Local coordinates for ease of reading coordinates on a map that does not exist gridnya, can be faring lines like a grid on the map. scale number of geographic and grid coordinate system is located on the edge of the map. Both sistern this coordinate system is internationally accepted. But in reading the often confusing, hence the reading of coordinates is made simpler or not read in its entirety. "For example: 72 100 mE read 21, 9 ° 9700 mN read 97, and others."
- Map scale is the ratio of distance on the map with the actual horizontal distance on the field or the field. Flat map, the distance formula can be written
0 komentar:
Posting Komentar