Scientists create the most reliable flat map of the Earth

Scientists create the most reliable flat map of the Earth

Rectangular projection of the most accurate and reliable world map. Credit: J. Richard Gott, Robert Vanderby and David Goldberg.
Thiago Robles

Thiago Robles Brazil meteorite 6 minutes

We all learned in school Global map projections of the Earth. But did you know that? There is no “perfect” representation of our planet? This is because it is difficult to convert a 3D surface into a 2D plane (two dimensions such as Cartesian coordinates All maps have some kind of distortion (Stretches and/or contractions).

And such a representation Cartographic forecasts They are used as a basis for building maps. These are the mathematical techniques used for Represents the Earth’s surface as accurately as possiblewhich is curved, on a flat map.

Cartographic projection is defined as a type of systematic tracing of lines on a flat surface intended to represent the parallels and longitudes of the Earth.

There are different types of cartographic projections, each of which gives priority to a particular aspect of representation (dimension, shape, etc.), and whose choice depends on the purpose of the map. But researchers from Princeton University in New Jersey (USA) They have created the most accurate flat map ever. look!

The most famous maps

Mercator projection

The most famous map is based on the Mercator projection, and is used primarily for sea navigation. This projection, drawn up by cartographer Gerhard Mercator in 1569, is of a cylindrical type, and is characterized by preserving the shapes of regions and distorting their sizes, making the regions near the poles larger than they actually are.

Mercator projection
Mercator projection is mainly used for navigation. Credit: Streep/Wikimedia Commons.

On this map, Meridians They are represented by vertical parallel straight lines equidistant from each other horizontally, whereas… Parallels They are represented by straight horizontal lines, and the vertical distance between two parallel lines decreases towards the equator. This engineering causes The Earth’s surface deforms in the north-south directionThe greater the distortion, the greater the latitude. Example: In this projection Greenland appears to be about the same size as South America, although it is actually eight times smaller.

Drop Robinson

The other map Very well known and used in pedagogical education He is the one who depends on him Drop RobinsonIt seeks to balance distortions of size and shape, but is also not completely devoid of them, especially in regions far from the equator.

Drop Robinson
Robinson projection is the most widely used in schools. Credit: Streep/Wikimedia Commons.

It is a projection of Allergies Type (incompatible, equivalent or equidistant) and Pseudocylindrical (It has no projection surface, but has properties similar to those of a cylindrical projection.) He was It was developed by Arthur H. Robinson in 1963. This map shows the entire world at once, and was created in an attempt to find a good representation of the entire globe in a flat image.

The most reliable flat map on Earth

Researchers Reread many mapsAnd giving grades to the existing maps when measuring the completed distortions New accountsAnd he arrived at creation The most accurate and reliable plan map ever.

the Shop Triple Projection It was the best result of all known forecasts. It was created in 1921 By a German cartographer Oswald’s store And improve it Heinrich Triebel in 1929. It is a technique that seeks and attempts to obtain a good approximation of the real areas of different parts of the globe Reduce area distortion, providing a fairer representation.

Shop Triple Projection
Map based on Winkle Triple projection. Credit: Streep/Wikimedia Commons.

the National Geographic Society NGS has used the Robinson projection for general-use world maps since 1988, but in 1998 it abandoned this projection and began adopting the Winkel-Triple projection, the latter underestimating the shift of land masses towards the poles.

Then build on that expectation Astrophysicists created their own map, minimizing all kinds of distortions and using an azimuth projection at an equal distance. Antarctica and Australia are represented more accurately than most other maps, and distances across oceans or poles are accurate and easy to measure, unlike one-sided flat maps.

A disc-shaped projection of the most accurate and reliable global map (Gott Projection). Credit: J. Richard Gott, Robert Vanderby and David Goldberg.

“The Winkel Tripel has been the best result of all known predictions. We introduce a new class of flat maps that has Correct topology and improved error scores. We believe it is the most accurate flat map of the Earth to date (…)” said the researchers.

the “The most reliable map of all” It was called I got droppedAnd you can check it out at Interactive version by clicking here.

News reference:

Gott III, Jr. Nearby Places: Vanderbei, RJ Flat Maps improving Winkel Tripel. arXiv2021.

(Tags for translation)Maps

You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *