Proceedings of Symposium on Remote Sensing and Photo Interpretation: Proceedings of Symposium on Remote Sensing and Photo Interpretation

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Multivolume work

Persistent identifier:: 842147969

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 842147969

Language:: German

Other Title:: Nebentitel: Proceedings : Symposium on Remote Sensing and Photo Interpretation

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Document type:: Multivolume work

Volume

Persistent identifier:: 84214806X

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Scope:: VII, 465 Seiten

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 84214806X

Illustration:: Illustration, Diagramme, Karten

Signature of the source:: T 15 B 1305

Language:: German

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2015

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: ENVIRONMENTAL MONITORING CHAIRMEN. - J. MACDOWALL - N. OPRESCU

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: LIMITS OF ERTS IMAGERY AS A TOOL FOR STUDYING THE BREAK-UP OF THE MACKENZIE RIVER, N.W.T. EXPERIENCES IN 1973 AND 1974. D. A. SHERSTONE, K. C. ARNOLD AND D. K. MACKAY

Document type:: Multivolume work

Structure type:: Chapter

403 LIMITS OF ERTS IMAGERY AS A TOOL FOR STUDYING THE BREAK-UP OF THE MACKENZIE RIVER, N.W.T. EXPERIENCES IN 1973 AND 1974 D.A. SHERSTONE, K.C. ARNOLD AND D.K. MACKAY GLACIOLOGY DIVISION, ENVIRONMENT CANADA ABSTRACT The 1972, 1973 and 1974 spring break-ups of the Mackenzie River have been recorded by aerial photography. ERTS imagery of the 1973 and 1974 break-ups has been examined to determine to what extent it can replace or supplement air and ground records. In 1973 "Quick-Look" prints were examined with reference to 1:250,000 scale maps in an attempt to follow the progress of break-up downstream. The low resolution of these prints limited the usefulness of this approach. In 1974 a Bausch and Lomb Zoom Transfer Scope was used to plot seven cloud-free "Quick-Look" frames on 1:250,000 map overlays. The results were again discouraging, because: - One could not discriminate between land areas and adjacent open water; - many islands shown on 1:250,000 maps could not be identified; - differences in position of some islands from one image to another were detected; - there are unexplained distortions in shorelines when ERTS imagery was superimposed on maps with the Zoom Transfer Scope; - it was not possible to distinguish between different ice types, or between moving ice and fast ice; and - interpretation was not improved using a colour densitometer; We conclude that ERTS "Quick-Look" imagery presently available is not a viable alternative to air and ground based break-up studies, and is of limited usefulness as a supplementary aid.

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