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Sunday, 9 July 2017

STRUVE GEODETIC ARC,UKRAINE.



Struve Geodetic Arc.
UNESCO World Heritage Site.

The Struve Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through 10 countries and over 2,820 km. 
These are points of a survey, carried out between 1816 and 1855 by the astronomer Friedrich Georg Wilhelm Struve, 
which represented the first accurate measuring of a long segment of a meridian. This helped to establish the exact size and shape of the planet and marked an important 
step in the development of earth sciences and topographic mapping. It is an extraordinary example of scientific collaboration among scientists from different countries, 
and of collaboration between monarchs for a scientific cause. The original arc consisted of 258 main triangles with 265 main station points. The listed site includes 34 of 
the original station points, with different markings, i.e. a drilled hole in rock, iron cross, cairns, or built obelisks.                
Countries involved---
 Belarus
 Estonia
 Finland
 Latvia
 Lithuania
 Norway
 Republic of Moldova
 Russian Federation
 Sweden
 Ukraine
Date of Inscription: 2005
Ref: 1187
Postal stamps issued by Belarus, Estonia, Finland, Latvia, Lithuania, Moldova, Sweden, Ukraine. 
Commemorative coins for the Struve Geodetic Arc issued by -Belarus, Moldova.

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