BREIDAMERKURJÖKULL
Iceland
1945 - 1965 - 1998
A
cartographic
and photographic record
Dr
D.J.A. Evans
Dr
D.R. Twigg
The Department of
Geography
and Topographic Science at the University of Glasgow in collaboration
with
the Department of Civil and Building Engineering at Loughborough
University
have just completed the re-mapping of
one
of the world's most famous and accessible glaciers - Breidamerkurjökull
in
South East Iceland. The new 1998 map and
two
selected
aerial
photograph stereo-triplicates, in addition to the previously
published
1945 and 1965 maps, are now being made available
for
teachers and researchers.
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HOW TO ORDER -
STEREO-TRIPLICATES
- LOCATION MAP - BREIDA
FLYER - ORTHOPHOTOGRAPHY - DIGITAL
CARTOGRAPHY
The high
quality maps are at a scale of 1:30,000,
printed
in full colour and include the surficial
geology
and
geomorphology.
The
1998 map includes the original orthophotographic
image
over the glacier surface thereby providing a clear impression of
crevasse
and supraglacial moraine patterns. The contour interval is at 10m
on
all the maps, allowing reconstructions of glacier surface profiles
through
time and assessments of glacial landform morphologies.
Stereo-triplicates
of
the 1998 aerial photographs cover most of the proglacial area, allowing
the viewing of features in 3-D through
the
use of standard stereoscopes. The pre-1998 glacial geomorphology
has been augmented by extra process-form
classifications
which
are based upon recent advances in glacial research. A research
paper
on the evolution of the glacial geomorphology is being prepared and
will
be submitted for publication by the end of 2000. These features
make
the maps and photographs ideal tools for the teaching
of
glaciology
and glacial geomorphology.
HOW TO ORDER
- STEREO-TRIPLICATES
- LOCATION MAP - BREIDA
FLYER - ORTHOPHOTOGRAPHY - DIGITAL
CARTOGRAPHY
Digital
cartography by
Yvonne
Finlayson
& Mike Shand
Cartographics
Unit, University of Glasgow
The new map of Breidamerkurjökull
in
South East Iceland has been produced in fully digital
environment,
as compared to the previously published 1945 and 1965 maps which were
produced
using analogue scribing and masking methods.
The base source for the
glacial
and topographic data was compiled from aerial
photographs
as
a series of film overlays. The contours were extracted digitally from a
DTM generated from orthophotographs
using
an LH Systems Digital Photogrammetric Workstation. The map overlays
containing
the base data were scanned
on a flat-bed scanner
to create a line art raster file which
was
then imported into CorelTrace
for automatic
raster
to vector conversion. The complete map consisted of 47
individual
orthophotographs for which approx. 4-6 overlays were created containing
the main boundary lines of the glacial landforms and topographic
features.
The vector
files
of the base data created in CorelTrace were imported and edited in CorelDraw
to
produce a fully structured map file. As the contours were to be created
digitally for each orthophotograph it was decided to move the final
design
and production to Adobe Illustrator
and utilise
Avenza
MaPublisher in combination with ESRI
ArcView
as
a means to automatically join and check the geo-referenced contour
files.
A further reason for moving the design and production to Illustrator
was
to take advantage of a proven route used in previous maps from an
Illustrator
file to a digital proof, platemaking and lithographic printing.
The raster
image
used for the glacier
was created by mosaicing
and manipulating the individual monochrome orthophotographs (tif
format)
in Adobe Photoshop to create the colour
image
and saving as a compressed file (jpeg format).
The completed Illustrator
vector map created a file size of 15Mb with
the
final map incorporating the raster image
of the glacial generating a file size of 150Mb.
How
to purchase copies of
BREIDAMERKURJÖKULL
Maps
& Aerial Photographs
To fax
or post an
ORDER
please CLICK
HERE:
Department of Geography
&
Topographic Science (Breida
map),
University of Glasgow,
Glasgow, G12 8QQ,
Scotland, U.K.
Fax: 0141 330 4894
Tel: 0141 330 4786 (Dr
D.J.A.
Evans)
e-mail: devans@geog.gla.ac.uk
Further
Research
Details :
Dr D.J.A. Evans http://www.geog.gla.ac.uk/~devans/
Dr D.R. Twigg http://www-staff.Lboro.ac.uk/~cvdrt1/
NOTE: The prices below are
currently UNDER REVIEW
The
standard
package includes:
One copy of each of the
1945,
1965, 1998 full colour maps at 1:30,000 scale (3
maps).
Two 1998 aerial
photograph
stereo-triplicates of the glacier foreland (6 photos).
PRICE (inc.
postage):
£25.00
(discounts
of 20% for orders of 10 or more and 30% for 20
or
more are available).
Individual maps are
also
on sale at £5.00 per sheet with the same discount as
above.
Unfolded
Copies:
The maps measure 690 x
400mm
and are supplied folded but may be supplied unfolded upon
request
for a small extra delivery fee of £1.00
(£2.00
overseas).
HOW TO ORDER
- STEREO-TRIPLICATES
- LOCATION MAP - BREIDA
FLYER - ORTHOPHOTOGRAPHY - DIGITAL
CARTOGRAPHY
Breidamerkurjökull
web pages created by Mike
Shand.
Back to
Department
of Geography & Topographic Science
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