1959 US Army Vietnam War Terrain Intelligence ... - Survival Books

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WWW.SURVIVALEBOOKS.COM 1t Figure 3. Air photo with major soil characteristics superimposed. 14 mation about all types of manmade features, from artificial obstacles to large industrial complexes. C. Limnitation. (1) The interpretation of photography is limited by adverse weather and by jungles or other heavily wooded terrain.
WWW.SURVIVALEBOOKS.COM (2) Photographs will not provide detailed factual information concerning the engineering properties of soil, vehicle type and trafficability relationships, and quantitative data for materials and other items. This type of information usually can be obtained only through field sampling and laboratory testing procedures or by comparison with information from reconnaissance reports, geological surveys, and similar sources. d. Requirements for <strong>Terrain</strong> Analysis. (1) There should be sufficient aerial photograph coverage made to enable the interpreter to determine the extent of local conditions and the expected variations. Usually vertical coverage is best, although oblique photographs may be useful for certain purposes, such as in the study of dense forest areas. Scales of from 1: 5,000 to 1: 20,000 are desirable for terrain analysis. Photographs in this range provide good area coverage per point and stereoscopic perception of relief. They show the general area relationships, such details as major gully characteristics, and the outstanding terrain features. (2) Photographs with scales between 1: 30,000 and 1: 60,000 or less provide excellent area coverage in the broadest sense. Major physiographic details are easily seen, studied, and bounded. Relief must be great, however, before stereovision is practical. Only major relief forms are clearly differentiated at these scales, and small details are lost. Major gullies can be plotted, for example, but in some cases their characteristics cannot be determined. As a rule, landforms can be delineated only when there is a great contrast in pattern. Slopes associated with landforms at times cannot be seen or distinguished. While such manmade features as roads, railroads, bridges, and buildings can be identified, the interpreter may have difficulty in determining their structural details. (3) Colored film is frequently the most effective for identifying vegetation. The scale varies with the data needed, ranging from 1: 5000 to 1: 40,000. Vegetation can also be identified from differences in tone on black and white aerial photographs. (4) Stereopairs, vectographs, and anaglyphs are particularly useful in making terrain studies. A stereopair consists of two photographs of the same terrain taken from different positions. Usually they are taken from a position vertically above the area being photographed with about 60 percent of each photo (called the overlap) common to both photographs. 15
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WWW.SURVIVALEBOOKS.COM groups that
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WWW.SURVIVALEBOOKS.COM in winter te
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WWW.SURVIVALEBOOKS.COM I41[ -· )-
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WWW.SURVIVALEBOOKS.COM terials are
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WWW.SURVIVALEBOOKS.COM frequency an
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WWW.SURVIVALEBOOKS.COM (3) Even in
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WWW.SURVIVALEBOOKS.COM They furnish
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WWW.SURVIVALEBOOKS.COM tiles and bu
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WWW.SURVIVALEBOOKS.COM CHAPTER 6 NA
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WWW.SURVIVALEBOOKS.COM conditions,
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WWW.SURVIVALEBOOKS.COM mate, howeve
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WWW.SURVIVALEBOOKS.COM contain mars
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WWW.SURVIVALEBOOKS.COM (6) Lacustli
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WWW.SURVIVALEBOOKS.COM (2) The stee
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WWW.SURVIVALEBOOKS.COM 75. Hills a.
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WWW.SURVIVALEBOOKS.COM thermal and
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WWW.SURVIVALEBOOKS.COM d. Valley Fl
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WWW.SURVIVALEBOOKS.COM by a lava fl
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WWW.SURVIVALEBOOKS.COM 2 0 2 0 0 a.
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WWW.SURVIVALEBOOKS.COM Artesian wel
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WWW.SURVIVALEBOOKS.COM (2) Special
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WWW.SURVIVALEBOOKS.COM (9) Kind and
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WWW.SURVIVALEBOOKS.COM d. The width
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WWW.SURVIVALEBOOKS.COM Figure 44. C
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WWW.SURVIVALEBOOKS.COM Figure 46. A
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WWW.SURVIVALEBOOKS.COM ing force fr
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WWW.SURVIVALEBOOKS.COM subgrade mat
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WWW.SURVIVALEBOOKS.COM (a) Gravel.
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WWW.SURVIVALEBOOKS.COM should be pr
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WWW.SURVIVALEBOOKS.COM Figure 47. M
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WWW.SURVIVALEBOOKS.COM Figure 49. S
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WWW.SURVIVALEBOOKS.COM southern Jap
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WWW.SURVIVALEBOOKS.COM grass). Gras
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WWW.SURVIVALEBOOKS.COM 99. Effects
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WWW.SURVIVALEBOOKS.COM (5) Wooded a
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WWW.SURVIVALEBOOKS.COM (e) Leaves (
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WWW.SURVIVALEBOOKS.COM CHAPTER 7 MA
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WWW.SURVIVALEBOOKS.COM conditions m
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WWW.SURVIVALEBOOKS.COM was improper
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WWW.SURVIVALEBOOKS.COM estimate of
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WWW.SURVIVALEBOOKS.COM requiring pr
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WWW.SURVIVALEBOOKS.COM Figure 54. I
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WWW.SURVIVALEBOOKS.COM Section III.
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WWW.SURVIVALEBOOKS.COM S. CaU f- Fi
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WWW.SURVIVALEBOOKS.COM (7) Administ
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WWW.SURVIVALEBOOKS.COM (6) In glory
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WWW.SURVIVALEBOOKS.COM usually is v
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WWW.SURVIVALEBOOKS.COM (4) Detailed
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WWW.SURVIVALEBOOKS.COM m. Water sup
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WWW.SURVIVALEBOOKS.COM ;7t- 7 ' I 4
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WWW.SURVIVALEBOOKS.COM a. Location
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WWW.SURVIVALEBOOKS.COM (3) Terrain
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WWW.SURVIVALEBOOKS.COM able to ambu
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WWW.SURVIVALEBOOKS.COM the text, th
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WWW.SURVIVALEBOOKS.COM (12) City go
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WWW.SURVIVALEBOOKS.COM 129. General
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WWW.SURVIVALEBOOKS.COM observation
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WWW.SURVIVALEBOOKS.COM of the terra
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WWW.SURVIVALEBOOKS.COM I -t 201
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WWW.SURVIVALEBOOKS.COM ll IIMII MII
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WWW.SURVIVALEBOOKS.COM ious force,
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WWW.SURVIVALEBOOKS.COM (a) Length.
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WWW.SURVIVALEBOOKS.COM development,
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WWW.SURVIVALEBOOKS.COM surrounding
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WWW.SURVIVALEBOOKS.COM b. The essen
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WWW.SURVIVALEBOOKS.COM FM 60-30 .--
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WWW.SURVIVALEBOOKS.COM 4. Maps and
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WWW.SURVIVALEBOOKS.COM (1) Relief a
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WWW.SURVIVALEBOOKS.COM APPENDIX IV
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WWW.SURVIVALEBOOKS.COM shown on the
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WWW.SURVIVALEBOOKS.COM heavy forest
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WWW.SURVIVALEBOOKS.COM 6'20'15' 51'
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WWW.SURVIVALEBOOKS.COM 0o 0 O2 0= I
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WWW.SURVIVALEBOOKS.COM Winter Sprin
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WWW.SURVIVALEBOOKS.COM Table I. Amp
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WWW.SURVIVALEBOOKS.COM Fog occurs o
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WWW.SURVIVALEBOOKS.COM CLIMATIC DAT
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WWW.SURVIVALEBOOKS.COM CLIMATIC DAT
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WWW.SURVIVALEBOOKS.COM APPENDIX VI
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WWW.SURVIVALEBOOKS.COM ,- -A- - ·
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WWW.SURVIVALEBOOKS.COM L~l /3xm i~~
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WWW.SURVIVALEBOOKS.COM 5. An area i
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WWW.SURVIVALEBOOKS.COM Continent-On
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WWW.SURVIVALEBOOKS.COM Foreshore-Th
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WWW.SURVIVALEBOOKS.COM Loam-A soil
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WWW.SURVIVALEBOOKS.COM Terrace-A re
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WWW.SURVIVALEBOOKS.COM Bridges -. .
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WWW.SURVIVALEBOOKS.COM Gage, track-
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WWW.SURVIVALEBOOKS.COM Natural gas
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WWW.SURVIVALEBOOKS.COM Paragraphs S
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WWW.SURVIVALEBOOKS.COM By Order of
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