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GB/T 42176-2022: The grade of wave height
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GB/T 42176-2022: The grade of wave height

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ICS 07.060 CCSA45 National Standards of People's Republic of China wave rating Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by the Ministry of Natural Resources of the People's Republic of China. This document is under the jurisdiction of the National Marine Standardization Technical Committee (SAC/TC283). This document was drafted by. National Marine Environmental Forecasting Center. The main drafters of this document. Li Benxia, Xing Chuang, Xu Rui, Meng Fanchang, Wang Juanjuan. wave rating

1 Scope

This document specifies the classes of waves for wave observations and forecasts. This document is applicable to wave observation, forecasting, warning and wave disaster investigation, risk assessment and production of analysis products, etc.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 14914.2 Specifications for Ocean Observation Part 2.Coastal Observation GB/T 15920 Oceanographic Terminology Physical Oceanography

3 Terms and Definitions

The following terms and definitions defined in GB/T 14914.2 and GB/T 15920 apply to this document. 3.1 ocean wave Waves in the sea caused by wind. [Source. GB/T 15920-2010, 2.4.1] 3.2 Wave level gradeofwaveheight The scale reflecting the wave height of ocean waves is determined according to the wave height on the sea surface. 3.3 Wave height waveheight The height difference between adjacent peaks and troughs on a wave profile. [Source. GB/T 15920-2010, 2.4.9] 3.4 1/3 height of highestone-thirdwave Arrange the sequence of wave heights measured continuously in a certain period of time from large to small, and take the average value of the first 1/3 wave heights after sorting. [Source. GB/T 15920-2010, 2.4.36] 3.5 1/10 height of highestone-tenthwave Arrange the sequence of wave heights measured continuously in a certain period of time from large to small, and take the average value of the first 1/10 wave heights after sorting. [Source. GB/T 15920-2010, 2.4.37] 3.6 Whitecap whitecap When the wind and wave steeply exceed the limit, the white spray phenomenon occurs when the wave breaks. ...