satellite photos for monitoring global wave patterns is described. Possibility of measuring 

 wave heights from deformation of the edges of cloud shadows is discussed. 



6910RS0006 

 YOST, EDWARD, and WENDEROTH, SONDRA, "Agriculture and, Oceanographic Apph- 

 cations of Multispectral Photography," Proceedings of the Sixth International Sym- 

 posium on Remote Sensing of Environment, University of Michigan, Ann Arbor, Mich., 

 Oct. 13-16, 1969, pp. 145-173. 



Keywords: Multispectral Photographs, Image Enhancement, Water Penetration, Oceano- 

 graphic Applications 



Paper describes the theory and design of a multispectral additive color viewing system. 

 System uses a four -lens camera that takes multispectral photos in four bands ranging from 

 0.36 to 0.90 microns and permits the photos to be projected to form a single color or false 

 color presentation. The authors discuss agricultural and oceanographic applications of 

 multispectral photos and additive color viewing. An experiment in the Tongue of the Ocean 

 Straits in the Bahamas to investigate multispectral techniques for imaging subsurface 

 topography is described. Maximum penetration in clear water was obtained with a 

 wavelength of 0.48 microns. Additive color viewing tests showed targets and the bottom at 

 depths of 150 feet. Test results at sites in the Gulf of Mexico off the Florida-Alabama coast 

 and in the Great South Bay of Long Island are also presented. Potential use of these 

 techniques for detection of phytoplankton and sediment concentrations is noted. Problems 

 in using multispectral photos are also discussed. 



6910RS0007 

 HICKMAN, G. D., HOGG, JOHN E., SPADARD, A. R., and FELSCHER, MURRAY, "The 

 Airborne Pulsed Neon Blue-Green Laser: A New Oceanographic Remote Sensing 

 Device," Proceedings of the Sixth International Symposium on Remote Sensing of 

 Environment, University of Michigan, Ann Arbor, Mich., Oct. 13-16, 1969, 

 pp. 1061-1074. 



Keywords: Aerial Remote Sensors, Water Depths, Coastal Processes 



Paper describes an airborne-pulsed neon laser device for measuring water depths and other 

 nearshore applications. The laser emits energy in a narrow wavelength bands of 540 

 millimicrons as part of the spectrum showing minimum attenuation in water. Depth is 

 determined by measuring the time interval between the reflection of the laser beam from 

 the water surface and from the bottom. Presence of suspended sediment is a limiting factor 

 in use of the laser. Depths ranging from a few feet to 26 feet have been determined. 

 Reported are a series of laser-emitted light transmission and scattering experiments in a tank 

 with different levels of water turbidity. Authors conclude that the laser is feasible for depth 

 determination and may have potential for the measurement of water turbidity, identi- 

 fication of bottom composition, and tracking of water currents. 



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