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:: RESOURCE INVENTORIES CHAIRMAN. - H. VERSTAPPEN

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: APPLICABILITY OF A SYSTEMATIC AIR PHOTO-INTERPRETATION PROCEDURE FOR THE PREPARATION OF LARGE SCALE SOIL MAPS. P. M. Jawade & T. R. Srinivasan

Document type:: Multivolume work

Structure type:: Chapter

Nature of Variations : Units 1 (4 ha) and 2 (10 ha) before correction can in effect be considered as inclusions in the soil areas lying respectively to the south and west. As such this cannot be considered as a serious error; also the difference is only in the sub group qualifi cation, namely "Alfic" and "Udic" Chromusterts. The soil in unit 3 (23 ha) was found to be 'Fine Alfic Chro- musterts' as against the predicted 'Clayey Udic Haplustalfs'. This can be considered as a rather serious error because the difference in Taxonomy is at the level of order itself. But it may be mentioned that the dominant soils in the plain areas are "Alfisols" and "Vertisols" and their intergrades, all being highly clayey; in such a situation the soils could be considered as near taxadjuncts. The case of unit 4 (3 ha) is very similar to unit 3, the only difference being that instead of the expected "Udic Haplustalfs", the actual soil was found to be "Udic Chromusterts" . Again in unit 5 (8 ha) , while the expected soil was one with a gravelly sub soil (Clayey skeletal Haplustalfs), the actual soil was gravelfree to a considerable depth (Clayey Haplustalfs); the extent is only a small percentage (1.8%) of the check area. Summarising, it may be stated that the variations from the photo interpretation map account in all for an area of only 48 ha or about 11% of the Intensive Check Area of 448 ha. Even within this, the error is not of the type or degree that can be avoided in the course of conventional detailed soil surveys using air photos as base maps. Comparison with Old Soil Map This survey was conducted in the year 1972; the same area had been covered by a detailed soil survey using very large scale cadastral maps as bases (Scale 1:396 0) about ten years earlier. These two soil maps in respect of three contiguous villages (total area 1316 ha) were superimposed to identify the differences. This was done only for the purpose of illustrating with a practical example the differences in the soil maps prepared by the two procedures, as it is fully appre ciated that the comparison is not a 'fair' one. The photo-interpretation map for the 1316 ha had 10 mapping units and a total length of 54 km of soil boundaries against 23 and 36 respectively in the old map. More importantly, the photo interpretation procedure ensured consistent and accurate mapping of soil erosion, for which the cadastral map is a poor base. The plain region of the study area lacked significant relief differences. Even so the systematic photo-interpretation procedure was found to be efficacious. It can, therefore, be confidently stated that for mapping tracts with greater relief differences, the procedure would offer even greater advantages. Time and Cost It was found that the adoption of systematic photo interpre tation procedure helped in covering about twice the area normally covered by conventional surveys; costwise, in respect of field survey only, the expenditure of the photo-interpretation procedure was 1/3 of the conventional method (I.A.R.I., 1970).

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