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HYT0356-2023: Classifications, codes and formats for the oceanographic survey thematic maps
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Classifications, codes and formats for the oceanographic survey thematic maps
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HY/T 0356-2023
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Basic data | Standard ID | HY/T 0356-2023 (HY/T0356-2023) | | Description (Translated English) | Classifications, codes and formats for the oceanographic survey thematic maps | | Sector / Industry | Marine Industry Standard (Recommended) | | Classification of Chinese Standard | A22 | | Classification of International Standard | 01.080.99; 07.060 | | Word Count Estimation | 23,248 | | Date of Issue | 2023-07-11 | | Date of Implementation | 2023-09-01 | | Issuing agency(ies) | Ministry of Natural Resources of the People's Republic of China | HYT0356-2023: Classifications, codes and formats for the oceanographic survey thematic maps---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 01.080.99;07.060
CCSA22
Marine Industry Standards of the People's Republic of China
Classification, coding and mapping format of thematic maps for marine surveys
Published on 2023-07-11
2023-09-01 Implementation
Ministry of Natural Resources of the People's Republic of China
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and coding methods 1
4.1 Classification method 1
4.2 Encoding method 1
5 Drawing classification and code 2
6 Drawing Format 8
6.1 Mathematical foundations 8
6.2 Methods of representing geographical elements 8
6.3 Representation of ocean elements 9
6.4 Notes 9
6.5 Finishing10
Appendix A (Normative) Marine Survey Thematic Map Decoration Style 14
Reference 17
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 of the contents of this document may involve patents. The issuing organization of this document does not assume the 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 Marine Survey, Observation and Monitoring Sub-Technical Committee of the National Marine Standardization Technical Committee (SAC/TC283/SC2).
This document was drafted by. National Marine Information Center.
The main drafters of this document are. Li Peng, Yang Huixian, Wang Liyan, Zhang Miaomiao, Hou Chen, Zhang Renqun, Kong Min and Li Xiao.
Classification, coding and mapping format of thematic maps for marine surveys
1 Scope
This document gives the classification of marine survey thematic maps, describes the corresponding coding method, and stipulates the classification and coding of maps, and the mapping format.
And other aspects of technical content.
This document applies to the production, application and management of marine survey thematic maps.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 32067 Marine element diagrams, legends and symbols
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
marineelements
The structure, composition, state, properties, spatial and temporal distribution, movement state and phenomena of the ocean.
[Source. GB/T 15918-2010, 5.7.6]
3.2
A special topic that reflects the temporal and spatial distribution and changes of marine elements compiled and produced by comprehensively using basic geographic information data and marine observation and survey data
map.
4 Classification and Coding Methods
4.1 Classification method
The marine survey thematic maps are divided into three levels. The first level is divided into marine hydrological thematic maps, marine meteorological thematic maps, and marine biological thematic maps according to disciplines.
Maps, ocean chemistry maps, ocean bottom maps, ocean geophysics maps, seafloor topography maps, ocean optics maps,
Ocean acoustics thematic maps, etc. Secondary and tertiary categories are divided according to the types of elements.
4.2 Encoding Method
The marine survey thematic map code is encoded using 6-digit characters. The specific method is as follows.
a) The first and second digits from the left are the first-level category, represented by two digits 01~99;
b) The third and fourth digits from the left are the secondary classes, which are feature classes formed by subdividing the primary class and are represented by two digits 00 to 99;
c) The fifth and sixth digits from the left are the third-level classes, which are feature classes formed by subdividing the second-level classes and are represented by two digits 00~99.
The code structure diagram is shown in Figure 1.
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