Where is the Transverse Mercator projection most accurate?

the equator
The projection is reasonably accurate near the equator. Scale at an angular distance of 5° (in latitude) away from the equator is less than 0.4% greater than scale at the equator, and is about 1.54% greater at an angular distance of 10°.

Which projection is used in the United States?

Today the Lambert Conformal Conic projection has become a standard projection for mapping large areas (small scale) in the mid-latitudes – such as USA, Europe and Australia. It has also become particularly popular with aeronautical charts such as the 1:100,000 scale World Aeronautical Charts map series.

When would you use a transverse Mercator?

Usage. The transverse Mercator projection is appropriate for mapping large-scale or smaller areas with predominantly north-south trending extents. It is a very commonly used projection. Various countries use it for their topographic maps and large-scale coordinate systems.

What is the best projected coordinate system for United States?

The two most common systems used in the United States are State Plane and Universal Transverse Mercator (UTM). The State Plane system minimizes accuracy distortions by defining projections that fit each state (or portion of a state) the best.

Why is Transverse Mercator projection not appropriate for a world map?

UTM projection distortions Distortion is small near the central meridian, and as you move away it worsens. So this makes it most fitting for narrow regions and not well-suited for world maps.

How do I find my UTM zone?

Take your longitude coordinate in decimal degrees and add 180. Most often, people will choose a coordinate in the north-west corner of their data, and assign it this zone number even if the data straddles two zones. Then divide by 6. Finally round-up to the next highest whole number.

Why do many companies like Google still use the Mercator projection?

Google Maps mainly uses the Mercator projection because it allows to preserve the angles.

What type of conformal projection is used for the conterminous US states?

Albers Equal Area Conic Projection
Albers Equal Area Conic Projection For example, the USGS uses this conic projection for maps showing the conterminous United States (48 states).

Who uses UTM?

UTM is currently used by the United States and NATO armed forces. With the advent of inexpensive GPS receivers, many other map users are adopting the UTM grid system for coordinates that are simpler to use than latitude and longitude. The UTM system divides the earth into 60 zones each 6 degrees of longitude wide.

What projection does California use?

Coordinate values (units of measure) are in meters with the x value also called easting and the y value called northing. A few organizations in California have used the Transverse Mercator projection with custom parameters that do not follow the UTM convention (may be called “UTM Zone 10.5”).

Is UTM a projected coordinate system?

About UTM. The Universal Transverse Mercator (UTM) system is a commonly used projected coordinate reference system. UTM subdivides the globe into zones, numbered 0-60 (equivalent to longitude) and regions (north and south).

Why do we still use the Mercator map?

This projection is widely used for navigation charts, because any straight line on a Mercator projection map is a line of constant true bearing that enables a navigator to plot a straight-line course.

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