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The atlas contains 841 sheets of chart, including sea water Temperature(abbreviated to Temperature)Salinity, Density, Sound Velocity Sound Channel, water color, transparency, surface current, tide, tidal current, sea wave, sea ice, etc. It is a basic and comprehensive atlas of marine hydrology for the Bohai Sea, Yellow Sea and the East China Sea. The Final chart scales are 1:3500000, 1:4500000, 1:5000000, 1:7 000 000, 1:7 500 000 and 1:10 000 000. The data of the atlas originate from the marine investigation data both at home and abroad, observations of the coastal ocean stations and ship reports of weather observation. The number of the stations of data collected for each element is: 148779 stations of data during 1907-1986 for temperature and salinity, with 126738 stations being the data since 1954; 68490 stations of data during 1907-1986 for water color and transparency, with 54176 stations being the data since 1954; 108918 stations of data during 1900-1986 for surface current, of which 61146 stations are the ones since 1950; 617 stations of harmonic constant selected for Tide, including 320 stations of computed data; about 1800 stations for Tide Current; 273678 stations of ship weather observation report and marine investigation data during 1968-1982 for Sea Wave; and sea-ice observations from 10 ocean stations, ship sea-ice observations and satellite picture data during 1962-1987 for Sea Ice. As the data vary in their source and quality, the observations with a complete record and the required precision are given priority while other data are optional. All the data have been strictly checked.
contents Topographic Map Temperature, Salinity, Density

 

1. Number of Observation Stations for Temperature and Salinity(Jan.--Dec.);
2. Temperature Distribution (Jan.--Dec.: Surface, 10m, 20m, 30m, 50m, 100m, 200m, Bottom);
3. Salinity Distribution (Jan.--Dec.: Surface, 10m, 20m, 30m, 50m, 100m, 200m, Bottom);
4. Density Distribution (Jan.--Dec.: Surface, 10m, 20m, 30m, 50m, 100m, 200m, Bottom);
5. Sectional Temperature and Salinity Positions;
6. Sectional Temperature Distribution (Feb., May, Aug. and Nov.);
7. Sectional Salinity Distribution(Feb., May, Aug. and Nov.);
8. Annual Temperature and Salinity Variations . Sound Velocity Sound Channel
9. Sound Velocity Distribution (Jan.--Dec.; Surface, Bottom);
10. Characteristics of Sound Channel (Jan.--Dec.);
11. Vertical Types Distribution of Sound Velocity(Feb., May, Aug. and Nov.); Spring Layer
12. Thermocline Distribution (Intensity, Upper-Bounds Depth and Thickness, Jan.--Dec.);
13. Halocline Distributions (Intensity, Upper-Bounds Depth and Thickness, Jan.--Dec.);
14. Pycnocline Distributions (Intensity, Upper-Bounds Depth and Thickness, Jan.--Dec.);
15. Sound Velocity Spring Layer Distributions (Intensity, Upper-Bounds Depth and Thickness, Jan.--Dec.); Water Color, Transparency, Runoff, Bed-Load, Transportation
16. Number of Observation Stations for Water Color and Transparency (Annual);
17. Distribution of Water Color and Transparency(Jan.--Dec.);
18. Variation of Runoff and Bed-Load Transport Surface Current Tide Tidal Current
19. Number of Observation Stations for Surface current(Jan.--Mar., Ari.---June, July--Sep., Oct.--Dec.);
20. Surface current (Jan.--Mar., Ari.---June, July--Sep., Oct.--Dec.);
21. Type of Tide;
22. Distribution of Maximum Possible Tidal Ranges;
23. Distribution of Co-amplitude and Co-phase Lag Lines of M2 Constituent;
24. Distribution of Co-amplitude and Co-phase Lag Lines of S2 Constituent;
25. Distribution of Co-amplitude and Co-phase Lag Lines of K1Constituent;
26. Distribution of Co-amplitude and Co-phase Lag Lines of O1 Constituent;
27. Types of Tidal Current;
28. Distribution of Maximum Possible Tidal Current (5m);
29. Co-tidal Chart of Maximum Tidal Current for M2 Constituent (5m);
30. Elliptical Axis of Tidal Current (M2 ,5m);
31. Ellipticity and Rotating Direction of Current Vector (M2 ,5m);
32. Maximum Possible Tidal Current Velocity ( M2 ,5m);
33. Co-tidal Chart of Maximum Tidal Current for S2 Constituent (5m);
34. Ellipticity and Rotating Direction of Current Vector (S2 , 5m);
35. Ellipitical Axis of Tidal Current(S2 , 5m);
36. Maximum Possible Tidal Current Velocity (S2 , 5m);
37. Co-tidal Chart of Maximum Tidal Current for K1 Constituent (5m);
38. Ellpitical Axis of Tidal Current( K1, 5m);
39. Ellpiticity and Rotating Direction of Current Vector (K1, 5m);
40. Maximum Possible Tidal Current Velocity (K1, 5m);
41. Co-tidal Chart of Maximum Tidal Current for O1 Constituent (5m);
42. Ellpitical Axis of Tidal Current( O1 , 5m);
43. Ellpiticity and Rotating Direction of Current Vector ( O1, 5m);
44. Maximum Possible Tidal Current Velocity ( O1, 5m); Sea Well
45. Sea Height (Jan.-Dec.);
46. Sea Period (Jan.-Dec.);
47. Frequency of Rough Sea (≥2.8m) (Jan.-Dec.);
48. Swell Height (Jan.-Dec.);
49. Swell Period (Jan.-Dec.);
50. Frequency of Heavy Swell (≥2.3m) (Jan.-Dec.);
51. Annual Variation of Sea and Well; Sea Ice
52. Sea Ice Period;
53. Sea Ice Edge (From the last days of Dec. to the first ten days of Mar.);
54. Heavy Sea Ice Condition

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