photos. Since the techniques are based on the measurement of other beach characteristics 

 on photos, the approach may be useful in coastal engineering. Beach properties from photos 

 include average foreshore slope, beach width, grain size of beach material, and presence of 

 ripple marks and beach cusps. Report recommends specifications for photos to be used in 

 determining trafficabiUty. Photos taken at low tide ±2 hours at a scale of 1:2,500 or larger 

 were recommended. Procedures used to determine beach characteristics related to 

 trafficability from photos are described. 



5503RS0001 

 MARKS, WILBUR, and RONNE, F. C, "Aerial Stereo-Photography and Ocean Waves," 

 Photogrammetric Engineering, Vol. 21, No. 1, Mar. 1955, pp. 107-110. 



Keywords: Aerial Photographs, Wave Patterns 



Article discusses a plan to use stereopairs to experimentally verify theories of ocean wave 

 generation, propagation, and decay. Advantages of photogrammetry over other procedures 

 are noted. The plan required cameras installed in two aircraft flying in tandem at a constant 

 horizontal separation with an FM radio Unk to ensure simultaneous triggering of both 

 cameras and to produce a stereopair of the moving and changing sea surface. A ship towing a 

 raft was used to determine the scale. Wave heights at discrete points were determined from 

 the stereopairs to yield a two-dimensional energy spectrum of the sea surface. 



5600RS0001 



KELLY, ROBERT A., "Apphcations of Terrestrial Photogrammetry for Determination of 

 Shore Movements," Master of Science Thesis, Department of Geology, Ohio State 

 University, Columbus, Ohio, 1956. 



Keywords: Photogrammetry, Coastal Changes, Beach Erosion, Lake Erie Shoreline, Ohio 



Thesis presents results of an investigation of terrestrial photogrammetry apphcations in 

 beach erosion and coastal change studies. Terrestrial photogrammetry was used along the 

 Lake Erie shoreline to determine beach profiles for use in computing volume changes in the 

 beach and also to examine changes in a laboratory beach subject to wave action. 

 Before -an d-after topographic maps were plotted for the laboratory beach to compute 

 volume changes caused by different wave conditions. A proposed technique for using 

 photogrammetry with photos of vertical graduated rods of known length for nearshore 

 bottom mapping is described. The advantages, Umitations, and recommendations for 

 improving terrestrial photogrammetry in beach studies are discussed. 



5600RS0002 

 COX, CHARLES, "Optical Measurements of Sea Surface Roughness," Proceedings of the 

 First Conference on Coastal Engineering Instruments, Edited by R. L. Wiegel, Council 

 on Wave Research, University of CaUfornia at Berkeley, Cahf., 1956, pp. 1-15. 



Keywords: Aerial Photographs, Wave Patterns 



A method of using special photos of the sea surface to measure the roughness is outhned. 

 Method is based on reflections from the sun recorded on the photos. Four K-17 cameras 

 were mounted in an aircraft; two cameras were arranged with their axes vertical, and two 



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