Results 221 to 230 of about 2,106 (266)

Mapping glacier basal sliding with machine learning

2023
During the RESOLVE project ("High-resolution imaging in subsurface geophysics: development of a multi-instrument platform for interdisciplinary research"), continuous surface displacement and seismic array observations were obtained on Glacier d'Argentière in the French Alps for 35 days in May 2018.
Josefine Umlauft, Christopher Johnson, Philippe Roux, Daniel Trugman, Albanne Lecointre, Andrea Walpersdorf, Ugo Nanni, Florent Gimbert, Bertrand Rouet-Leduc, Claudia Hulbert, Paul Johnson   +10 more
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SOME FUNDAMENTAL CONSIDERATIONS ON GLACIER MAPPING

Canadian Journal of Earth Sciences, 1966
Five glacier maps at scales of 1:5 000 and 1:10 000 were produced by the Photogrammetric Research Section of the National Research Council and the Axel Heiberg Island Expedition of McGill University for use in glaciological research in the Canadian Arctic. After general comments on the need for and scope of glacier mapping, the authors discuss in some
T. J. Blachut, F. Müller
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THE PURPOSE OF GLACIER MAPPING

Canadian Journal of Earth Sciences, 1966
As an introduction to the Symposium on Glacier Mapping and for the purpose of providing a basis for further discussion, the requirements in various types of glacier maps are differentiated. Most maps of glaciers are not made specifically for glaciologists but as part of a general geographical survey program.
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SOME PROBLEMS OF GLACIER MAPPING EXPERIENCED WITH THE 1:10 000 MAP OF THE ALETSCH GLACIER

Canadian Journal of Earth Sciences, 1966
The difficulties of the aerial survey of the Aletsch Glacier lay in establishing ground control in the high mountains and locally on the moving glacier surface, and in plotting featureless névés on the autograph. The major problem in plotting proved to be the delineation of the margins of active glaciers where marginal zones were thickly covered with ...
P. Kasser, H. Roethlisberger
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MEASURING AND MAPPING OF GLACIER VARIATIONS

Canadian Journal of Earth Sciences, 1966
One of the main purposes of glacier mapping is to determine the temporary state of glaciers and to investigate glacier variations by successive mappings. The author illustrates this work with particular reference to terrestrial photogrammetric surveys of mountain glaciers in the Nanga Parbat region of the Himalaya and of the Tunsbergdalsbre in ...
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CARTOGRAPHIC REPRESENTATION AND SYMBOLIZATION IN GLACIER MAPPING

Canadian Journal of Earth Sciences, 1966
In glacier cartography, as in all mapping, questions of convention and standardization have long plagued cartographers. National and international efforts at standardization have generally failed. To assess the styles, techniques, and status of glacier representation, several hundred maps of glaciers and related features were examined and evaluated ...
Karen J. Ewing, Melvin G. Marcus
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Glacier Thickness Change Mapping Using InSAR Methodology

IEEE Geoscience and Remote Sensing Letters, 2014
This letter presents a novel method for high-precision estimation of mountain glacier thickness change from the conventional interferometric synthetic aperture radar (InSAR) interferograms and multiaperture InSAR measurements. The method exploits the two components of displacement along the line of sight of radar beam and along track for deriving the ...
Jianmin Zhou, Zhen Li, Xiaobo He, Bangsen Tian, Lei Huang, Quan Chen, Qiang Xing   +6 more
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Lakes, Rivers And Glaciers / A Map Commentary

Cartographica, 1968
The map entitled Lakes, Rivers and Glaciers is the first of a new series that will supplement the National Atlas of Canada presently in production in the Department of Energy, Mines and Resources, Ottawa. The purpose of this series of separate map sheets is to make available a limited amount of new material in periods between the publication of atlas ...
G. FREMLIN, H. E. MINDAK
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INFRARED MAPPING OF THERMAL ANOMALIES IN GLACIERS

Canadian Journal of Earth Sciences, 1966
All-season aerial reconnaissance of the Arctic has been advanced with the development of airborne, infrared scanners. The utility of such equipment for detecting and studying the progression of thermal anomalies of glaciological interest is discussed with reference to specific examples of imagery obtained during three seasons on Project "Bold Survey ...
Ambrose O. Poulin, T. A. Harwood
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Mapping glacier ice thickness in Chile

Knowledge of ice thickness is essential for understanding past and predicting future changes of glaciers systems in response to climatic changes. Various methods exist on how to best estimate ice thickness from surface information in data sparse regions.
Jorge Berkhoff, Johaness Fürst, Christian Sommer, David Farias, Marius Schaefer, Jose Luis Rodriguez, Jose Uribe, Felipe Ugalde   +7 more
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