The State of California Liquefied Natural Gas (LNG) Terminal Act of 1977 granted to the Public Utilities Commission (PUC) the exclusive power to issue a permit concerning the construction and operation of an LNG terminal pursuant to a prescribed permit procedure. The Act also required the California Coastal Commission (CCC) to study potential sites for the terminal and to make recommendations thereon to PUC. Not later than 31 May 1978, CCC shall complete and transmit to PUC its final report evaluating and ranking the sites. The U.S. Army Engineer Waterways Experiment Station (WES) was requested to assist in the preliminary evaluation of the wave climate at alternate potential LNG terminal sites by applying existing hindcast wave data of a general nature to obtain estimates of the times of excessive wave conditions at the various sites. After the preliminary evaluation was completed, WES was again requested to assist by analyzing the effects of island sheltering and topographic influences on the wave climate of five onshore sites in order to provide a more refined estimate of the wave conditions existing at the potential sites. The deepwater hindcast wave data used in the evaluation were the State of California Department of Navigation and Ocean Development (DNOD) singular wave statistics, and supplemental hindcast data by National Marine Consultants (NMC) and Marine Advisers (MA). In recent weeks serious questions have arisen regarding the fundamental developments of the DNOD statistics and evidence exists which indicates the wave heights so predicted are systematically lower than the corresponding heights predicted by a spectral wave model. WES and others are at the present time engaged in a comprehensive program to provide a spectral hindcast of the California coastal region; however, these results will not be available for approximately two years and the LNG site selection process cannot await these findings. Accordingly, the analysis conducted is a relative evaluation only and should not be interpreted as projections of actual downtime, but rather as a consistently uniform basis for comparison. It was determined that the wave climate at Rattlesnake Canyon is statistically significantly greater than those sites south of Point Conception, and that the remaining onshore sites are not statistically significantly different from each other. Because of the sheltering effect of the offshore islands and the physically shielding orientation of the southern California coastline from the severe northwest wave climate, any of the proposed onshore sites south of Point Conception appear to be viable potential LNG terminal sites in the absence of additional protective structures._x000D_ _x000D_ NOTE: This file is very large. Allow your browser several minutes to download the file.


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    Titel :

    Preliminary Evaluation of Wind and Wave Effects at Potential LNG Terminal Sites, State of California: Appendix A: An Evaluation of the Relative Wave Climate at six Offshore LNG Sites Considering Island Influences and Topographic Effects


    Beteiligte:

    Erschienen in:

    Miscellaneous Paper ; H-78-2 app.A


    Erscheinungsdatum :

    1978


    Format / Umfang :

    45416174


    Medientyp :

    Report


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :