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FAQ for Marine

  • I. Tides
  • II. Ocean Current
  • III. Wave
  • IV. Marine Meteorological Information Service

Note

  • I. Tides Download
1. Why do tides occur?
2. What is the definition of "flood", "ebb", "high water", and "low water"?
3. Approximately how long does the low water last?
4. What is a long period of tide?
5. How many flood and ebb tides should there be each day?
6. What does the "*" sign mean in the tide table?
7. What are "spring tides" and "neap tides"? Are they shown in the tide table?
8. Why the spring tide still occurs during the full moon phase when the Earth is between the Moon and the Sun?
9. Is spring tide affected by the seasons?
10. What is the "lunitidal interval"?
11. What is the "higher transit of the Moon"?
12. How is tide table data calculated?
13. What is the datum of the tides?
14. How is tidal energy used to generate electricity?
15. How does tide influence fisheries and aquaculture?
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