projections Flashcards
1
Q
Mercator Characteristics
A
- Cylindrical - can be secant or tangent
- Parallels + Meridians are straight lines and cross on another at 90°
- Areas and shapes of large areas like continents are usually distored.
- The poles are typically not shown
- Any straight line on a mercator map is a rhumb line
2
Q
Rhumb Line
A
line of constant angular direction
3
Q
UTM
A
Universal Transverse Mercator
4
Q
Universal transverse Mercator (UTM)
A
is a coordinate system based on a cartesian coordinate system.
5
Q
UTM is composed of…
A
60 zones, each of 6°longitude wide, with a central meridian place every sixth meridian beginning with 177° west longitude.
6
Q
Each UTM zone has…
A
both a north and a south zone
7
Q
Origin of the zone (UTM)
A
the intersection of the Central Meridian of a UTM zone and the Equator
8
Q
Each zone has a false …
A
False easting of 500,000 m west of the zone’s central meridian.
