(Gm-07v) Page 1 of 10
Norges teknisk-naturvitenskapelige universitet
Institutt for bygg, anlegg og transport
Date: 13. December 2007
Time: 0900 – 1300
Version 8.12.2008. The values of the first set of Sx1 and Sx2 in 3.2.a are corrected
Question 1: Coordinates and corrections
The coordinates are in EUREF89, UTM zone 33. Describe EUREF89. Describe UTM.
See curriculum. Key words:
is a regional datum which is realized in Norway by the coordinates and heights of the
”Stamnett” points (points in the First order network of Norway). Norway is on the same
tectonic plate as Europe and parts of Russia, therefore a regional datum. A little inexact, but
ca correct (at least in this course): E89 is the 1989 version of the global GPS datum WGS84.
The datum of the maps of the Norwegian mapping authorities, most of the
municipalities are now using E89.
is a map projection plane, conformal, ”shrank” lying cylinder. The 2 UTM traps:
Scale of 0,9996 along the north axis, false origin of the east value (500000 m is the east
value on the north axis).
As a map projection of many datums, for instance
EUREF89 and WGS84.
Show why the north axis in zone 33 in UTM is situated 15
east of Greenwich
The division of the zones starts in Greenwich in London, the zones are 6 degrees wide (in
latitude). This give the borders of the zones: One zone between 0 and 6 degrees, next
between 6 and 12, next 12 and 18 degrees east of Greenwich. The numbering of the zones
do not start with 1 in Grw, but we know(?) the zone 32 is covering the southern part of
Norway, as the longitude of Trondheim city is ca 10,5 degrees east of Grw. Then the zone
33 is between 12 and 18 degrees E Grw, with the north axis in the centre of the zone: 15
degrees Ø Grw.
Draw a figure in UTM zone 33 showing the 2 points Nm and S1 and the north axis.
A simple figure (sketch), also including information from question 1.2 and figure 1.1:
The borders of Steinkjer municipality is between the Trondheim fjord in west (ca 11,1
of Greenwich) and to ca 12,4
east of Greenwich in east. Describe a practical problem
which might arise by using EUREF89 (UTM) as a reference system in Steinkjer. How can
the municipality solve the actual practical problem?
The municipality is covered by 2 UTM zones: 32 and 33 (see question (a)). It is inconvenient to
have 2 zones in a municipality, especially in areas close to the border between 2 zones (two
coordinate sets, difficult to do measurements as the maps are in two zones). They can avoid the
problem by widen (expand) zone 32 eastward, and thus obtain that zone 32 is covering the whole