Hindcasting the Directional Spectra of Hurricane-Generated Waves

Author:

Cardone V.J.1,Pierson W.J.1,Ward E.G.2

Affiliation:

1. City U. of New York Institute of Marine and Atmospheric Sciences

2. Shell Development Co.

Abstract

A method for specifying hurricane-generated waves in the Gulf of Mexico in terms of the directional wave spectrum has been developed. The method includes a description of the surface-wind field from historical meteorological data through the application of a dynamic-hurricane frictional boundary-layer model. Introduction One of the more critical factors affecting the design of an offshore structure is the estimate of the maximum wave condition that can be expected to affect the structure during its lifetime. In the Gulf of Mexico, the more severe wave conditions are associated with hurricanes. The maximum expected wave conditions are estimated using extreme-value statistical-analysis techniques. The wave data used in the extreme-value analyses must represent a statistically significant population of historical wave data. The use of population of historical wave data. The use of wave-hindcasting techniques in conjunction with the meteorological data that characterize historical storms is the most appropriate way of obtaining the required wave data. The hindcast approach has been applied in the Gulf of Mexico with wave-hindcast models that use the significant-wave concept. These models characterize sea state only in terms of the significant wave height and period. Such a study recently described by Bea used period. Such a study recently described by Bea used the deep-water hindcast model developed by Wilson as calibrated by Patterson. That hindcast model used descriptions of the hurricane wind field provided by the empirical model developed by the Office of Hydrology of the National Oceanic and Atmospheric Admin. To produce such a description, the wind model required only a specification of radius-to-maximum wind, magnitude of -storm pressure anomaly, the forward speed of the storm, and the storm track. These parameters are available for all storms that have crossed the U.S. coast line since 1900. The study reported here resulted in a state-of-the-art method for describing hurricane-generated winds and sea states. The development of the method dealt with both significant aspects of the problem-the hurricane wind-field model and the wave-hindcasting model. The wind-field model is based on a fundamental description of the interaction between the atmospheric pressure field and the wind field within a hurricane. However, even with this fundamental approach, the only input data required by the wind-field model is of the type available for historical hurricanes. The description of the sea state based on the concept of the directional wave spectrum. The hindcast model describes the growth, dissipation, propagation, and shallow-water modifications (refraction, shoaling, and bottom friction) of the waves in terms of the directional spectra. The approaches taken in the development of these models were made possible by three important factors. First, a significant amount of wind and wave measurements in the hurricane environment has become available for model calibration and validation as a result of the Ocean Data Gathering Program (ODGP). Second, recent advances in dynamic hurricane modeling allowed the application of a numerical model of the hurricane frictional boundary layer to the wind-specification problem. Finally, the hindcast model could build upon the problem. Finally, the hindcast model could build upon the framework of contemporary deep-water directional spectral models that have been applied so successfully within the past decade to extratropical weather systems. past decade to extratropical weather systems. JPT P. 385

Publisher

Society of Petroleum Engineers (SPE)

Subject

Strategy and Management,Energy Engineering and Power Technology,Industrial relations,Fuel Technology

Cited by 51 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3