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ACTIVITY 12<br />
AREA & GRID REFERENCING & DIRECTION<br />
PART D: How humans are interacting positively<br />
with this environment<br />
Watch the IAPF School Video Blog 11<br />
AREA AND GRID REFERENCING SKILL (and a 16-point-compass)<br />
INTRODUCTION: Area Referencing is an important and useful geographical concept used by game rangers to inform their peers of their<br />
location or spoor found in the savanna. It is abbreviated as AR and consists of FOUR (4) digits (eg AR 0319). There is a general rule when<br />
calculating AR coordinates from a map: the first set of numbers in the coordinate are the Eastings, the second set are the Northings. However,<br />
AR coordinates are not very helpful, they only get rangers to within a hundred meters squared of a location which puts rangers in danger,<br />
maybe someone has been injured and need assistance to evac out, maybe a wire snare or evidence has been located and needs an ambush<br />
and / or police for a crime scene. Given a savanna is full of vegetation, it makes it very difficult to quickly locate an object across a few hundred<br />
metres.<br />
Hence, Grid Referencing is better. Grid Referencing is abbreviated as GR and has SIX (6) digits (up to TEN 10 digits with a GPS) (eg GR037197).<br />
These coordinates get a ranger to within a few meters of their target which is much more accurate and efficient. Again, the general rule when<br />
calculating GR coordinates from a map: the first set of numbers in the coordinate are the Eastings, plus ONE MINOR NUMBER; the second<br />
set of coordinates are the Northings, plus ONE MINOR NUMBER. The minor numbers are calculated by dividing a box up into 10 equal parts.<br />
Attempt the samples below.<br />
EASTINGS<br />
EASTINGS<br />
7<br />
12 3 45 6 8<br />
12 3 45 6 789<br />
NORTHINGS NORTHINGS<br />
AR 0216<br />
GR 027164<br />
AR 0318<br />
GR 031189<br />
AR 0319<br />
GR 037197<br />
WNW<br />
W<br />
WSW<br />
NNW<br />
NW<br />
SW<br />
AR 0516<br />
GR050163<br />
N<br />
NNE<br />
NE<br />
E<br />
SE<br />
SSW SSE<br />
S<br />
THIS IS CALLED<br />
A 16-POINT-<br />
COMPASS<br />
ENE<br />
ESE<br />
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