748
December 2018
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
PHOTOGRAMMETRIC ENGINEERING
& REMOTE SENSING
J
ournal
S
taff
Publisher ASPRS
Editor-In-Chief Alper Yilmaz
Technical Editor Michael S. Renslow
Assistant Editor Jie Shan
Assistant Director — Publications Rae Kelley
Electronic Publications Manager/Graphic Artist Matthew Austin
Photogrammetric Engineering & Remote Sensing
is the official journal of the
American Society for Photogrammetry and Remote Sensing. It is devoted to the
exchange of ideas and information about the applications of photogrammetry,
remote sensing, and geographic information systems. The technical activities of
the Society are conducted through the following Technical Divisions: Geographic
Information Systems, Photogrammetric Applications, Lidar, Primary Data
Acquisition, Professional Practice, and Remote Sensing Applications. Additional
information on the functioning of the Technical Divisions and the Society can
be found in the Yearbook issue of
PE&RS.
Correspondence relating to all business and editorial matters pertaining to this
and other Society publications should be directed to the American Society for
Photogrammetry and Remote Sensing, 425 Barlow Place, Suite 210, Bethesda,
Maryland 20814-2144, including inquiries, memberships, subscriptions, changes
in address, manuscripts for publication, advertising, back issues, and publica-
tions. The telephone number of the Society Headquarters is 301-493-0290; the
fax number is 301-493-0208; web address is
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PE&RS
.
PE&RS
(ISSN0099-1112) is published monthly by the American Society
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COPYRIGHT 2018.
Copyright by the American Society for Photogrammetry and
Remote Sensing. Reproduction of this issue or any part thereof (except short
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es, for creating new collective works, or for resale.
The Severnaya Zemlya archipelago in
the Russian high Arctic spans 37 000
square kilometers—about the same
area as the U.S. state of Indiana. De-
spite its size and proximity to the Si-
berian mainland, the archipelago went
unnoticed and unmapped until its dis-
covery by an ocean expedition in 1913.
Today, the four large islands would be
hard to miss in satellite imagery. These
images show part of the island group on
9 August 2018, as observed by the Oper-
ational Land Imager (OLI) on Landsat-8.
In this view you can see the southern
tip of Komsomolets Island, the largest
in the archipelago; the eastern side of
Pioneer Island; and the northwest side
of October Revolution Island.
You will not find any trees growing
here. This is Arctic tundra, and cold, dry
conditions prevail throughout the year.
The average daily temperature in Au-
gust, when this image was acquired, is
0°C (32°F). Such conditions are quite
favorable for year-round ice, which covers about half of the archipelago.
The wide view (i.e., second image) shows ice caps dotting the surface. The Academy
of Sciences Ice Cap is the archipelago’s largest at 5 575 square kilometers (i.e., 2 152
square miles). Some of the edges of the ice rest on land and others stretch over seawa-
ter. Ice loss occurs from surface melting and from the shedding of icebergs. Thin, broken
sea ice chokes the water in the straits.
The top image shows a detailed view of the Albanov Ice Cap on October Revolution Island,
Russia. Research has shown that like most ice caps in this area, Albanov has steepened.
That is, accumulations have made the cap thicker in the middle, at the same time that the
cap’s edges are retreating. Many of the ice caps, including Albanov, contain snow and ice
that has melted and refroze, visible as the blue areas ringing the ice caps.
NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S.
Geological Survey and topographic information from the ArcticDEM Project at the Polar
Geospatial Center, University of Minnesota. Story by Kathryn Hansen.
For more information, visit
.
