6400RS0001 

 PIERCE, JACK W., "Recent Stratigraphy and Geologic History of the Core Banks Region, 

 North Carohna," Ph. D. Dissertation, Department of Geology, University of Kansas, 

 Lawrence, Kans., 1964. 



Keywords: Aerial Photographs, Coastal Changes, Tidal Inlets, Core Banks, North Carolina 



Dissertation describes use of photos in a study of the stratigraphy and geologic history of 

 the Core Banks Region of North Carohna. Photos taken in 1945, 1954-55, 1958-1960, 

 and 1962 were examined to determine the short term changes in coastal features along 

 about 45 miles of barrier island coastline. In addition, a series of USC&GS charts produced 

 between 1864 and 1952 were analyzed for coastal changes over a longer period. Most 

 coastal changes from the photos are described in qualitative terms. No details of the 

 photogrammetry are given. Photos were also used to determine the distribution and 

 migration of small tidal inlets in a part of the area at six different times over a 17-year 

 period. The inlets were shown to be a transient feature although uniformity in location was 

 noted. Report contains data on volume changes in the shores. A theory of the geologic 

 evolution of the area is presented. 



6404RS0001 



WAUGH, JOSEPH E., "Photogrammetric Measurement of Tidal Currents," Proceedings of 



the American Society of Civil Engineers, Journal of the Surveying and Mapping Division, 



Vol. 90, No. SU 1, Paper No. 3857, 1964, pp. 17-29. 



Keywords: Aerial Photographs, Photogrammetry, Water Currents, Charleston Harbor, 



South Carolina 



Paper describes the procedure used by the USC&GS to measure tidal currents by 

 photogrammetry. The technique provides an economical approach for synoptic current 

 measurements over a large area. By taking photos at intervals throughout the tidal cycle, 

 current directions and velocities at tide stages can be determined. Current velocity is 

 measured by the movement of floating surface targets between the exposure of two 

 overlapping photos. Current measurement, target designs, and problems such as sun spots 

 are discussed. Procedure is well-adapted to the production of tidal current charts because of 

 the ease with which currents can be determined in a dense network of data points. 



6407RS0001 

 VAN WIJK, M. C, "Discussion Paper-Water Depths from Aerial Photographs by G. C. 

 Tewinkel," P/ioiogrammefnc Engineering, Vol. 30, No. 4, July 1964, p. 647. 



Keywords: Aerial Photographs, Water Depths 



Article reviews a paper titled, "Water Depths from Aerial Photographs," published in 

 Photogrammetric Engineering, Volume 29, No. 6, November, 1963, pp. 1034-1042, and 

 authored by G. C. Tewinkel. Main point of this discussion paper is whether refracted light 

 rays from two camera stations intersect at a point beneath the water surface. The paper 

 states that generally they do not. Equations are derived to show that only for special cases 

 does the intersection occur, and otherwise there are vertical and horizontal displacements of 



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