overlap to permit stereo examination are recommended. Photos are concluded to be useful 

 in this study since important submerged features are shown. Low oblique photos are useful 

 in interpreting coral reef features. 



5100RS0001 

 BELCHER, DONALD J., AMOUZEGAR, J., HODGE, R. J., LADENHEIM, H. C, and 

 LUEDER, D. R., "A Photo-Analysis Key for the Determination of Ground Condi- 

 tions," Vol. 1— Coastal Plain Beaches, Vol. 2— Pocket Beaches, Vol. 3— Coral beaches, 

 Glaciated Beaches, River Mouth Beaches, and Terrace Beaches, Beach Series, Technical 

 Report No. 3 for the Office of Naval Research, Cornell University, Ithaca, N.Y., 1951. 

 Keywords: Aerial Photographs, Coastlines, Coastal Mapping 



This three-volume report presents information to identify types of beaches and beach 

 features on photos. Report covers all types of beaches and many of them are illustrated by 

 photos, and the geographical distribution discussed. The material presented is useful to 

 coastal engineers not familiar with photo interpretation techniques but wish to use photos 

 in reconnaissance of coastal areas. Publication can also be useful in geological appUcations of 

 photo interpretation in beach studies. 



5200RS0001 



SCHUMACHER, A., "Results of Exact Wave Measurements (by Stereophotogrammetry) 



with Special Reference to More Recent Theoretical Investigations," Gravity Waves, 



Proceedings of the National Bureau of Standards Semicentennial Symposium on Gravity 



Waves National Bureau of Standards Circular 521, Washington, D.C., 1952, pp. 69-78. 



Keywords: Photogrammetry, Wave Surfaces, Wave Patterns. 



The history and results of attempts to measure ocean waves by photogrammetry using 

 stereo photos taken from a ship is presented. The advantages and capabihties of 

 photogrammetry in such investigations are given for the types of additional data to be 

 derived. Maps of wave patterns from tliis method are included. Use of rapid sequence stereo 

 photos to gather data on changes in waves in space and time is discussed. Extension of the 

 method from shipborne cameras to airborne cameras is mentioned. The article Hsts 

 numerous German references on use of shipborne photogrammetry to measure descriptive 

 wave parameters. 



5203RS0001 

 CAMERON, H. L., "The Measurement of Water Current Velocities of Parallax Methods," 

 Photo grammetric Engineering, Vol. 18, No. 1, Mar. 1952, pp. 99-104. 



Keywords: Aerial Photographs, Photogrammetry, Water Currents, Bay of Fundy, Canada 



Article describes the anomalous stereo effects on photos by water currents where the water 

 surface is discolored enough to be opaque. Surface movement by water currents between 

 exposures produces a parallax tliat causes the surface to appear as ridges and valleys in the 

 stereo model. The possible use of tliis phenomena to measure current velocities and 

 direction is discussed. Suggestions for applying this technique are given, such as the use of a 

 slow-moving aircraft to obtain maximum water surface displacement, noting the stage of the 



