Regionalized ensemble estimation of wave periods for assessing wave energy resources across Canada. Part II: Wave-period and wave-energy analyses

IF 4.8 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management Pub Date : 2024-11-06 DOI:10.1016/j.ocecoaman.2024.107458

Cong Dong , Gordon Huang , Guanhui Cheng , Yanpeng Cai , Jinxin Zhu , Shan Zhao

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Abstract

The cornerstone for harnessing and utilizing wave energy resources lies in the precise and thorough estimation and assessment of wave energy fluxes through advanced modeling of wave periods. This study implements the developed macroscale regionalized ensemble wave-period modeling (MREWPM) method to accomplish the initial integrated estimation and analysis of wave periods and wave energy fluxes across Canada, complemented by advanced estimations of wave heights and wind speeds. The results indicate that Canadian wave periods lengthen in shallow, low-backscatter, southern, remote, or eastern waters, and exhibit temporal variability in breezy, low-backscatter, southern, remote, or eastern regions. The trend of wave periods exhibited fluctuations, decreasing before and increasing after the trough (9.06 s in 2004) during cool seasons. Temporal variabilities and trends of wave periods were more fragmented and heterogeneous compared to averages. Canadian wave energy fluxes generally exhibit an increase southward with latitudes. The wave energy typically diminishes from offshore (deep waters) to nearshore areas (shallow waters), with this attenuation being more pronounced in winter months. There is a rough decrease from winter, autumn, and spring to summer months, mirroring the seasonal variations of wave periods. This seasonality tends to be more pronounced in highly energetic regions, such as the Pacific and Atlantic oceans. This study enhances reliability and feasibility of macroscale wave-period and wave-energy estimation and analyses, offering scientific support for wave energy development, wave climatology, and ocean engineering.

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用于评估加拿大各地波浪能资源的波浪周期区域化集合估算。第二部分：波浪周期和波浪能分析

利用波浪能资源的基石在于通过先进的波浪周期建模，对波浪能通量进行精确、全面的估算和评估。本研究采用已开发的宏观区域化集合波浪周期建模（MREWPM）方法，对加拿大各地的波浪周期和波浪能通量进行了初步综合估算和分析，并对波高和风速进行了高级估算。结果表明，加拿大的波浪周期在浅水、低后向散射、南部、偏远或东部水域延长，在微风、低后向散射、南部、偏远或东部地区表现出时间上的可变性。波浪周期呈现波动趋势，在凉爽季节，波浪周期在波谷（2004 年为 9.06 秒）前减小，在波谷后增大。与平均值相比，波浪周期的时变和趋势更加分散和不均匀。加拿大的波浪能通量一般表现为随纬度南移而增加。波浪能量通常从近海（深水）向近岸区域（浅水）衰减，这种衰减在冬季更为明显。从冬季、秋季和春季到夏季，波浪能量大致减弱，这反映了波浪周期的季节性变化。在高能量区域，如太平洋和大西洋，这种季节性往往更为明显。这项研究提高了宏观波浪周期和波浪能量估算与分析的可靠性和可行性，为波浪能开发、波浪气候学和海洋工程提供了科学支持。

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来源期刊

Ocean & Coastal Management 环境科学-海洋学

CiteScore

8.50

自引率

15.20%

发文量

321

审稿时长

60 days

期刊介绍： Ocean & Coastal Management is the leading international journal dedicated to the study of all aspects of ocean and coastal management from the global to local levels. We publish rigorously peer-reviewed manuscripts from all disciplines, and inter-/trans-disciplinary and co-designed research, but all submissions must make clear the relevance to management and/or governance issues relevant to the sustainable development and conservation of oceans and coasts. Comparative studies (from sub-national to trans-national cases, and other management / policy arenas) are encouraged, as are studies that critically assess current management practices and governance approaches. Submissions involving robust analysis, development of theory, and improvement of management practice are especially welcome.