Accession Number : ADA267960


Title :   Preliminary Estimates of Frequency-Direction Spectra Derived from the SAMSON Pressure Gage Array, November 1990 to May 1991


Descriptive Note : Final rept.,


Corporate Author : COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS


Personal Author(s) : Long, Charles E ; Oltman-Shay, Joan M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267960.pdf


Report Date : May 1993


Pagination or Media Count : 94


Abstract : In the course of the SAMSON (Sources of Ambient Micro-Seismic Noise) experiment conducted by researchers from Scripps Institution of Oceanography at the Coastal Engineering Research Center (CERC) Field Research Facility (FRF) near Duck, NC, a two-dimensional array of 24 bottom-mounted pressure sensors was deployed near the 13-m depth contour to detect unattenuated pressure signals arising from interactions of directionally opposed wave trains. The geometry of the array was ideal for wind wave directional spectral estimation in the 0.04- to 0.24-Hz frequency band. The formal SAMSON experiment took place in October and early November 1990, but data collection continued until June 1991. Data from this post-experiment period were made available to CERC and were subsequently processed with a 360-deg Iterative Maximum Likelihood Estimation algorithm to determine the general character of the local wave field, including specifically any indications of significant seaward-propagating wind wave energy. This report contains descriptions of the SAMSON array and the type of data collected, and an estimate of error for reported reflection coefficients. It contains displays, both graphic and tabular, of relevant wind wave parameters deduced from the analysis.... Frequency-direction spectra, Wave reflection, Wave climate, Wind waves


Descriptors :   *PRESSURE GAGES , *COASTAL ENGINEERING , COASTAL REGIONS , OCEAN WAVES , PARAMETERS , TWO DIMENSIONAL , ESTIMATES , FREQUENCY BANDS , SIGNALS , CLIMATE , OCEANOGRAPHY , DIRECTIONAL , NOISE , SEISMIC WAVES , PRESSURE , SPECTRA , BATHYMETRY , MAXIMUM LIKELIHOOD ESTIMATION , WIND , RESEARCH FACILITIES , DEPTH


Subject Categories : Physical and Dynamic Oceanography


Distribution Statement : APPROVED FOR PUBLIC RELEASE