Accession Number : ADA261939


Title :   Optical Measurements of Ripples Using a Scanning Laser Slope Gauge. Part 1. Instrumentation and Preliminary Results


Descriptive Note : Technical rept.


Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA


Personal Author(s) : Martinsen, Robert J ; Bock, Erik J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a261939.pdf


Report Date : Mar 1993


Pagination or Media Count : 15


Abstract : We describe the design, implementation, and deployment of a laser slope gauge developed at the Woods Hole Oceanographic Institution for the purpose of studying the propagation characteristics of capillary ripples, and how currents and natural slicks on the ocean surface modify ripple spectra. The laser slope gauge constitutes a nondisruptive optical technique for determining the slope spectrum for a range of waves with wavelengths between 2 mm and 20 cm using both spatial and temporal information. Operation of the sensor and data acquisition system is discussed and a sample data record collected in the Gulf Stream off Cape Hatteras, NC is interpreted and analyzed.


Descriptors :   *OCEAN WAVES , *LASERS , *RIPPLES , *CAPILLARY WAVES , SURFACE WAVES , OCEAN CURRENTS , SPECTRA , SLOPE , AIR WATER INTERACTIONS , REMOTE DETECTION , CAPE HATTERAS , OIL SPILLS , GULF STREAM , OPTICAL DETECTORS , DATA ACQUISITION , WAVE PROPAGATION , OCEAN SURFACE , SURFACE ROUGHNESS , OPTICAL IMAGES


Subject Categories : Physical and Dynamic Oceanography
      Lasers and Masers
      Optical Detection and Detectors


Distribution Statement : APPROVED FOR PUBLIC RELEASE