GB/T 19721.2-2017The issue of marine forecasts and warnings—Part 2: The issue of wave forecasts and warnings (English PDF)

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).

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 document. 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.