ERROR PREDICTION AND CORRECTION OF SIMULATED WAVE DATA IN PERSIAN GULF IN DIFFERENT CLIMATIC CONDITIONS

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Moeni M.H.; SHAHIDI A.E.; CHEGINI V.; RAHMANI I.; MOGHADAM M.

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Year:2012 | Issue:10

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Title

ERROR PREDICTION AND CORRECTION OF SIMULATED WAVE DATA IN PERSIAN GULF IN DIFFERENT CLIMATIC CONDITIONS

Author(s)

Moeni M.H. | SHAHIDI A.E. | CHEGINI V. | RAHMANI I. | MOGHADAM M.

Keywords

PERSIAN GULF

DATA HOMOGENIZING

WAVE PREDICTION

SPECTRAL MODEL

SWAN

Abstract

THE WAVES RESULTED BY WIND ARE THE MOST IMPORTANT ENVIRONMENTAL FACTORS IN THE MARINE ENGINEERING PROJECTS. IN MOST REGIONS, BECAUSE OF SHORTAGE OF WAVES MEASURED DATA, THE PREDICTED DATA IS USED FOR DEFINING WAVE’S CLIMATE. TODAY, WAVES SPECTRAL NUMERICAL MODELS HAS TURNED TO MOST PRACTICAL TOOL FOR FORECASTING WIND GENERATED WAVES. NEVERTHELESS, THE RESULTS OF THESE MODELS INVOLVE SOME ERRORS. THUS, THE OUTPUT OF SPECTRAL NUMERICAL MODELS SHOULD BE CORRECTED BASED ON FIELD DATA. THE NEW APPROACH APPLIED ON THE PRESENT STUDY FOR CORRECTION OF OUTPUT VARIABLE RESULT OF NUMERICAL MODEL IN COMPUTATIONAL RANGE IS PREDICTION OF PARAMETERS ERRORS IN DISCRETE POINTS AND DISTRIBUTION OF THIS ERROR IN COMPUTATIONAL RANGE. FOR THIS PURPOSE, THE PRIMARY WAVE SIMULATION WAS DONE (USING THE THIRD GENERATION OF SPECTRAL NUMERICAL MODEL, SWAN) IN THE PERSIAN GULF AND THE SIMULATION RESULT WAS COMPARED TO THE FIELD DATA. COMPARISON OF THE RESULTS WITH MEASURED VALUES IN BUSHEHR SPOT SHOWS THAT THE PREDICTED WAVES HEIGHT AND PERIOD AND THE ERROR VALUE OF HEIGHT AND PERIOD PREDICTION ARE DIFFERENT. MOREOVER, THE WAVE’S DIRECTION HAS BEEN SIMULATED PRECISELY. AFTER PRIMARY WAVES SIMULATION, THE PARAMETER CHANGE METHOD WAS APPLIED TO LOWER THE ERROR OF OUTPUT RESULT. THE RESULTS AT THIS STAGE SHOW THAT THE PARAMETER CHANGE FOR REFINING THE RESULTS HAS ITS OWN LIMITATIONS. THE NEW APPROACH APPLIED FOR CORRECTION OF OUTPUT VARIABLE RESULTS IN NUMERICAL MODEL IN COMPUTATIONAL RANGE IS PREDICTION OF PARAMETER ERRORS IN OBSERVATORY DISCRETE POINTS AND MIXING THEM WITH SIMULATED VALUES. IN THIS METHOD, THE ERROR VALUE OF HEIGHT AND PERIOD PREDICTION IN WAVE’S MEASUREMENT POINTS WAS ESTIMATED SEPARATELY. THE RESULTS SHOW THAT USING THIS METHOD, BOTH WAVE’S HEIGHT AND PERIOD WILL BE PREDICTED WITH HIGH PRECISION. THIS APPROACH HAS THE CAPABILITY OF DISCRIMINATING BETWEEN VARIOUS CLIMATIC CONDITIONS AND CONSIDERS THESE DIFFERENCES IN ERROR PREDICTION. THIS ARTICLE IS THE RESULT OF A RESEARCH DONE IN THE TRANSPORTATION RESEARCH INSTITUTE WITH THE TITLE OF “DEVELOPMENT OF A COMBINATIONAL METHOD FOR WAVE’S PREDICTION IN PERSIAN GULF”.

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APA: Copy

Moeni, M.H., SHAHIDI, A.E., CHEGINI, V., RAHMANI, I., & MOGHADAM, M.. (2012). ERROR PREDICTION AND CORRECTION OF SIMULATED WAVE DATA IN PERSIAN GULF IN DIFFERENT CLIMATIC CONDITIONS. INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). SID. https://sid.ir/paper/907688/en

Vancouver: Copy

Moeni M.H., SHAHIDI A.E., CHEGINI V., RAHMANI I., MOGHADAM M.. ERROR PREDICTION AND CORRECTION OF SIMULATED WAVE DATA IN PERSIAN GULF IN DIFFERENT CLIMATIC CONDITIONS. 2012. Available from: https://sid.ir/paper/907688/en

IEEE: Copy

M.H. Moeni, A.E. SHAHIDI, V. CHEGINI, I. RAHMANI, and M. MOGHADAM, “ERROR PREDICTION AND CORRECTION OF SIMULATED WAVE DATA IN PERSIAN GULF IN DIFFERENT CLIMATIC CONDITIONS,” presented at the INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). 2012, [Online]. Available: https://sid.ir/paper/907688/en

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