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GB/T 19721.2-2017 English PDF

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GB/T 19721.2-2017: The issue of marine forecasts and warnings -- Part 2: The issue of wave forecasts and warnings
Status: Valid

GB/T 19721.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 19721.2-2017English139 Add to Cart 3 days [Need to translate] The issue of marine forecasts and warnings -- Part 2: The issue of wave forecasts and warnings Valid GB/T 19721.2-2017
GB/T 19721.2-2005English479 Add to Cart 3 days [Need to translate] The issue of marine forecasts and warnings -- Part 2: The issue of wave for forecasts and warnings Obsolete GB/T 19721.2-2005

PDF similar to GB/T 19721.2-2017


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Basic data

Standard ID GB/T 19721.2-2017 (GB/T19721.2-2017)
Description (Translated English) The issue of marine forecasts and warnings -- Part 2: The issue of wave forecasts and warnings
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A45
Classification of International Standard 07.060
Word Count Estimation 7,723
Date of Issue 2017-03-09
Date of Implementation 2017-10-01
Older Standard (superseded by this standard) GB/T 19721.2-2005
Quoted Standard GB/T 15920-2010
Regulation (derived from) National Standard Notice No. 5 of 2017
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the level of wave forecast and alarm, content requirements. This standard applies to marine forecasting agencies to use the wave forecasting and warning services.

GB/T 19721.2-2017: The issue of marine forecasts and warnings -- Part 2: The issue of wave forecasts and warnings


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The issue of marine forecasts and warnings - Part 2. The issure of wave forecasts and warnings ICS 07.060 A45 National Standards of People's Republic of China Replacing GB/T 19721.2-2005 Marine forecast and alarm release Part 2. Wave Forecast and Alert Release Part 2. Theissureofwaveforecastsandwarnings 2017-03-09 released 2017-10-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

GB/T 19721 "Marine forecast and alarm release" is divided into three parts. - Part 1. Storm surge alarm release; - Part 2. Wave Forecast and Alert Release; Part 3. Sea ice forecast and warning release. This part is part 2 of GB/T 19721. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This section replaces GB/T 19721.2-2005 "Marine Forecast and Alert Release Part 2. Wave Forecast and Alert Release". versus GB/T 19721.2-2005 compared to the main changes are as follows. - the definition of terms such as "waves" and "effective waves" (see 3.2, 3.5 in.2005); - the definition of terms such as "effective wave height", "wave", "wave cycle", "wave level", "coastal waters", "offshore sea area" 3.5, 3.6, 3.7, 3.8, 3.9); - the words "purpose" and "basic principles" (see chapter 4, chapter 5 of the.2005 edition); - modified content of the hierarchy (see Chapter 4, 6.1 of.2005); - modified the title and content of the forecast and warning requirements (see Chapter 5, Chapter 6 of the.2005 edition); - "Archive", "Format", "Data", "Archives" (see 6.3, 6.4, 6.5, 7 in.2005); Amend the Appendix A wave table (see Appendix A of Appendix A,.2005); - Appendix B, Appendix C, Appendix D (see Appendix B, Appendix C, Appendix D of the.2005 edition) was deleted. This section is presented by the State Oceanic Administration. This part is headed by the National Marine Standardization Technical Committee (SAC/TC283). This part is drafted by the National Marine Environment Forecasting Center. This part of the main drafters. Li Benxia, Xing Chuang. This part of the previous version of the standard to replace the release of the situation. --- GB/T 19721.2-2005. Marine forecast and alarm release Part 2. Wave Forecast and Alert Release

1 Scope

This part of GB/T 19721 specifies the classification and content requirements for wave forecasting and warning. This section applies to marine forecasting agencies for use in wave forecasting and warning services.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 15920-2010 Oceanography Terminology Physical oceanography

3 terms and definitions

GB/T 15920-2010 Definitions and the following terms and definitions apply to this document. For ease of use, the following is repeated Some terms and definitions in GB/T 15920-2010. 3.1 Ocean waves The sea caused by the wind fluctuations. Mainly including storms and waves. [GB/T 15920-2010, definition 2.4.1] 3.2 Wind and waves The wind acts directly on the surface of the surface caused by gravity waves. [GB/T 15920-2010, definition 2.4.24] 3.3 Swing swel From the other sea area or the local wind speed quickly reduced, subsided, or the wind changes, the sea left on the fluctuations. [GB/T 15920-2010, definition 2.4.25] 3.4 Effective wave width significantwaveheight The wave height sequence measured continuously from a certain period is arranged from large to small, and the average of the first 1/3 wave height is sorted. 3.5 Wave to wavedirection The direction of the waves. Note. rewrite GB/T 15920-2010, defined 2.4.13. 3.6 Wave period waveperiod The time at which two adjacent peaks (or troughs) pass through a fixed point in the wave profile. [GB/T 15920-2010, definition 2.4.14]

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