This part of GB/T 19721 establishes the principles for issuing sea wave forecasts and warnings, specifies the conditions for the classification of sea wave forecasts and warnings, and the contents, procedures, and technical requirements for the issuance of forecasts and warnings. This part applies to all marine forecasting departments. GB/T 19721.2-2005 Marine forecast and warning issuance Part 2: Sea wave forecast and warning issuance GB/T19721.2-2005 Standard download decompression password: www.bzxz.net
This part of GB/T 19721 establishes the principles for issuing sea wave forecasts and warnings, specifies the conditions for the classification of sea wave forecasts and warnings, and the contents, procedures, and technical requirements for the issuance of forecasts and warnings. This part applies to all marine forecasting departments.

CS 07.060
National Standard of the People's Republic of China
GB/T19721.2-—2005
Marine forecasts and warningsPart 2: Wave forecasts and warningsPart 2. The issue of marine forccasts and warnings2005-08-09Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
2006-02-01ImplementationwwW.bzxz.Net
GB/137213 Marine forecasts and warnings are divided into three parts:Part 1: Wind and rain forecasts and warningsPart 2: Wave forecasts and warningsPart 3: Wave forecasts and warnings
This part is divided into Part 2 of (11/-9721). Appendix A of this part is the normative state appendix.
The appendix K of this part and Appendix C and Appendix D of this part are the materials proposed by the National Tourism Administration.
This part is drafted by the National Sea Standards Administration.
The drafting unit of this part is the National Marine Environmental Monitoring Center. The main authors of this part are Xu Fuyang, Shi Xinian and Zhang Qiwen. GB/T19721.2—2005
GH/T 19721.2—2005
my country's wave forecast began in 1966. my country's coastal provinces, counties and cities have successively issued separate sea wave warnings and general warnings. In order to further improve the work of sea wave warning, it is necessary to formulate a unified national wave forecast and warning release standard, establish a wave warning and warning release mechanism, and unify the procedures, internal management and technical requirements for sea current forecast and warning release.||t This part is formulated by taking into account the technical regulations of relevant disciplines at home and abroad, reviewing the examples of foreign wave quality and warning issuance, summarizing the domestic experience in wave forecast and warning issuance, and combining with the wind and sea warning issuance market, sea wave forecast and warning issuance market to form a standard for sea wave forecast and warning issuance in my country.
1 Scope
Ocean forecast and warning issuance
Part 2: Wave forecast and warning issuance
GB/I 19721,2—2005
/This part of 19731 establishes the conditions for issuing sea wave forecasts and warnings, and defines the contents, procedures, technical requirements, etc. of issuing sea wave forecasts and warnings. This part is applicable to all marine forecast departments. 2 Normative references
The following documents shall become the appendixes of this part through reference to this part of 1971. All dated references and their accompanying amendments (excluding errata or revised editions) shall not apply to this part. However, the latest versions of these documents shall apply to all parties who have reached an agreement on the establishment of this part. For referenced documents without date, the latest version shall apply to this part.
GB/T 11a:1—199:
3 Terms and definitions
Sea currents and their definitions
The following terms and definitions apply to this part of F119721. 3.1
Ocean waves
Waves generated by wind in the sea, other wind-driven waves and swells derived from them, [H/159201SS5. Definition] 4.1
Oil disaster wavedisaster
Surging waves for marine navigation and oil production Facilities, casualties and economic losses caused by offshore fishing and coastal and offshore aquaculture, port terminals, piracy and other coastal marine L processes, 3.3
windwavewindwave
Water surface fluctuations caused by wind direct action.
_GB/T: 920—1995. Definition 2.38
swell
Wind and waves become swells after leaving the sea area where wind can act, or after the wind in the sea area drops sharply or the wind changes sharply. G/15920198 Definition X4
sinnificant wave1 wave
has a certain measured 1/3 of the maximum height of the average value of the wave, 1GBT15 (20-1905. Definition t,
public purpose
system - wave quality report certification investment release sequence, internal abandonment, wave forecast and warning release work into scientific, standardized, systematized GB/T19721.2--2005
5 basic rules
wave control and storage report release to the public to see whether the effective height reaches or exceeds GB/T149141S4 medium wave level calculation table 1 see Appendix A: a certain wrinkle wave is measured, that is, follow the occurrence, development, migration of waves The actual needs of the marine and tourism production departments should be taken into consideration. The timeliness of the forecast and warning should be based on the actual needs of the coastal and nearby disaster prevention and mitigation departments. The classification of the level of the forecast should refer to the relevant actual situation of the international marine classification system. 6 Requirements E.1 Classification 6.1.1 Forecasts should be issued in accordance with the provisions of the World Meteorological Organization. In case of major marine disasters, the forecast should be issued on time every 24 hours, 135 hours, and 72 hours. 6. 1. 2 Alerts
When a huge wave reaching or exceeding level 6 in the original wave scale (effective wave height 4.0m--5.9m) appears in the affected sea area, or when a wave reaching or exceeding level 2 (effective wave height 3.0m--4.9m) appears in the offshore area west of 1° east longitude, a wave warning shall be issued at least 13h in advance.
6. 1. 3 Emergency warnings
When a huge wave reaching or exceeding level 7 in the original wave scale (effective wave height 4.0m--8.4m) appears in the affected sea area, or when a wave reaching or exceeding level 2 (effective wave height greater than 14°) appears in the offshore area west of 1° east longitude, a storm warning shall be issued at least 12h in advance.
6.2 Forecast and report contents
6.2.1 Forecast
Forecast force Includes description of the current situation of the forecast area and the distribution of the forecast area sea wave medicine. Provide the current sea wave map of the forecast area and the future sea wave map.
6.2.2 Report
The content of the general report includes the number and Chinese and English names of the wind medicine, or the dense tide, the atmospheric conditions in the near future: the affected coastal areas and the distribution of the near future sea waves; the time of the next forecast release. 6.2. 3 Emergency report
The content of the report includes the typhoon number, Chinese and English name, tide, temperate and tropical weather conditions; the actual situation of sea waves in the affected coastal areas; the distribution of sea waves in the affected coastal areas; the total number of warnings;
6.3 Dissemination method
Dissemination method: Issue forecasts, warnings and emergency warnings through fax, broadcast, telephone, the Internet, etc. 6.4. Format
The format of the forecast report issued by the national and local marine forecast departments is as follows: Each forecast and substitute report shall have an abbreviation, the time of issue and forecast, the time of the forecast shall be in units of 10 ... 2—2005
The weather data include the ocean, ship, floating observations of wind speed, wind direction, sea level weather charts: tropical cyclone replacement data, ground, high-altitude sub-atmospheric charts, satellite information and other data. Archived
Archived data should include: station reports, alarms and general alarm forms, actual inspection and evaluation results, and important inspection reports. GB/T19721.2—2005
Appendix A
(Normative data)
Quick check table
[:15/T=4914—1904 Regulations See Table 4.1. Table A. 1
Method City
0. 1--, 4
0. ~ 1. 2
2. 5-~ 3. 9
4. 0 ~ 5.9
Thank you for checking the calculation
Wind fluid name
Light fluid e
Moderate waves
Big waves riugh ses
Very riugh yea
Jiangdian high sea
Jiangjin very high sea
Precisely rea
Barrel scale
Corresponding wind level
10- 1-
Color: No.243
National Tourism Forecasting Center, North
September-October
Friday _930 Issue
Three-day sea wave forecast
Attachment B
(Informative Appendix)
Example of sea wave forecast
GB/T79721.2—2005
8:00, there are two no-wave areas in the Pacific Ocean, the first one is located in the East China Sea, Taiwan Strait, Neihu, Bashi Sea, east of the Philippines and south of Japan, with a maximum wave height of m. The first one is located in the Sea of ​​Japan, with a maximum wave height of 4m: the first one is located in the sea north of Guam with a maximum wave height of 12 m.
Estimation: The first big wave area in the big wave area in the northern part of the East China Sea disappeared, and the rest of the area continued to expand to the sea east of Japan. The morning was a big wave, 11 m, 12 days: 3 days, the recorded wave height was 4 m, and the two big wave areas were maintained, so the big wave heights were 4 m and 3.5 mm. The big wave entered the big wave area and maintained the maximum wave height of 9 m on November 13, and will reach the sea east of Japan, with a volume of 3 m, maintained on the 3rd, and the maximum wave height will be 12 hours. At night, under the influence of the Yellow Sea, the control sea and the responsibility zone will form a big wave area with a maximum wave height of 3.5%. The big wave area that had been taught disappeared, and the Taiyang wave continued to expand to the east, with a test height of 4. GB/T 19721.2—2005
Alarm: No.0010-0
Big Ocean Class News: Taipei!
2u((Friday, August 23, 2000 43:3) Attachment
(Informative Appendix)
Example of Sea Wave Alert [27
Due to the impact of the 10th typhoon in 2000, Bili, a rough wave area of ​​1.8 to 2.6 inches has formed off the northern coast of Fujian Province. This area is approaching the northern coast of Fujian Province. It is expected that tonight or later, under the influence of this wave, the ocean current will form a huge wave of up to 4m and 5m. The Beili Ocean Station in Fujian will see a huge wave of 1.1 meters; the Nanliao and Datun Ocean Stations in Zhejiang will see huge waves of 4.5 meters and 5.5 meters. Relevant coastal locations should take precautionary measures. Tonight and tomorrow, the huge wave of about 11 inches will cause great damage to the coast. The next warning will be issued on August 23 And released at 6:00 pm. 6
General report, No. 5215-02
National Oceanic Emergency Control Center, Beijing
Published on April 5, 2002
(Information Record)
Example of Sea Wave Emergency Report [2]
GB/T 19721.2—2005
Affected by the 11th typhoon Senlak at 28 degrees north latitude at 12 noon, a 14m high surf zone was formed on the sea surface near 129 degrees east longitude. It is heading towards northern Xinhui Province and Shanghai. It is estimated that the coastal area will be affected by this wave zone tonight or tomorrow morning and will form a 5m high wave with a rate of 10m. Some of them may reach 5m. This process is similar to the "wind and wave impact confirmed in the river and sea" in 2000. Zhejiang Yaonan and Dachu ocean stations saw 6.5m and 7.8m high waves respectively. . All relevant units in Haikou should take preventive measures. The strong waves from tonight to 10 am tomorrow will increase the danger to coastal structures and aquatic products. The next emergency alert will be issued at 5:00 pm next month.
GB/119721.2-2D05
【114B11592:1995 Marine Science and Technology Physical Oceanography [2] Haiya Meteorological Service and Guidelines
Translated by Dong Yuxi, Lu Jiayan, Liu Weishen, Langgou Zhao, Meteorological Press, October 1C, 2001
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