Comparative performance of Radar, Laser, and Waverider Buoy measurements of ocean waves – Part 2: Time domain analysis

IF 1.9 4区 地球科学 Q2 ENGINEERING, OCEAN Journal of Atmospheric and Oceanic Technology Pub Date : 2023-05-25 DOI:10.1175/jtech-d-22-0123.1
P. Jangir, K. Ewans, I. Young
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引用次数: 1

Abstract

Accurate measurements of ocean waves underpin efficient offshore operations and optimal offshore structure design, helping to ensure the offshore industry can operate both safely and economically. Popular instruments used by the offshore industry are the Rosemount WaveRadar (Radar) and the Waverider Buoy. The Optech Laser has been used at some locations for specific studies. Recent reports indicate systematic differences of order 10% among the wave measurements made by these instruments. This paper examines the relative performance of these instruments based upon various time-domain comparisons, including results from a quality control procedure (QC), capabilities of measuring the wave surface profile (skewness), and crest heights for varying wind sea and swell conditions. The QC check provides good quality data that can be further investigated with an assurance of error-free data, suggesting that the Waverider produces the best quality data with the lowest failure rate compared to the Laser and Radar. A significant number of the Waverider surface elevation records have negative skewness, particularly at higher sea states, affecting its crest height measurements, which are lower than those from the Laser and Radar. Additionally, the significant wave height (H1/3) estimates of the Radar are lower than the Laser and Waverider, but its zero-crossing wave periods (TZ), on average, are longer than the Laser and the Waverider. The significant heights (H1/3) of Laser and Waverider are in good agreement for all three datasets, but the Waverider’s zero-crossing wave period (TZ) estimates are significantly longer than the Laser.
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海浪的雷达、激光和乘波浮标测量的比较性能——第2部分:时域分析
海浪的精确测量为高效的海上作业和优化的海上结构设计奠定了基础,有助于确保海上行业能够安全经济地运营。海上工业使用的常用仪器有罗斯蒙特WaveRadar(雷达)和Waverrider浮标。Optech激光器已在一些地方用于特定研究。最近的报告表明,这些仪器进行的波浪测量之间存在10%左右的系统差异。本文基于各种时域比较来检查这些仪器的相对性能,包括质量控制程序(QC)的结果、测量波面轮廓(倾斜度)的能力以及不同风海和涌浪条件下的波峰高度。QC检查提供了质量良好的数据,可以在保证无错误数据的情况下进行进一步调查,这表明与激光和雷达相比,Wavelrider产生了质量最好、故障率最低的数据。相当多的Waverider表面高程记录具有负偏斜度,特别是在较高的海况下,影响了其波峰高度测量值,该值低于激光和雷达的测量值。此外,雷达的有效波高(H1/3)估计值低于激光器和载波器,但其过零波周期(TZ)平均比激光器和载波器长。对于所有三个数据集,Laser和Waverider的有效高度(H1/3)都非常一致,但Waveride的过零波周期(TZ)估计值明显长于Laser。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.50
自引率
9.10%
发文量
135
审稿时长
3 months
期刊介绍: The Journal of Atmospheric and Oceanic Technology (JTECH) publishes research describing instrumentation and methods used in atmospheric and oceanic research, including remote sensing instruments; measurements, validation, and data analysis techniques from satellites, aircraft, balloons, and surface-based platforms; in situ instruments, measurements, and methods for data acquisition, analysis, and interpretation and assimilation in numerical models; and information systems and algorithms.
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