10.3. Tides and Their Measurement

Try these first

1. 1.

   What are the two main types of tides?

   Hint

   Think about maximum and minimum levels of the ocean.

2. 2.

   What occurs during a spring tide?

   Hint

   Relate it to full and new moons.

3. 3.

   What type of tide occurs during the first and last quarters of the moon?

   • Spring Tide
   • Neap Tide
   • High Tide

   Hint

   Consider what happens during the quarters of the moon phase.

4. 4.

   True or False: Float-operated tide gauges measure tidal height using water pressure.

   • True
   • False

   Hint

   Think about how float gauges function and their mechanism.

5. 5.

   If a tide gauge measures a depth of 5 meters at a high tide and, during the next reading, the same location records 3 meters during low tide, calculate the tidal range. Discuss the implications of this range for recreational maritime activities.

   Hint

   Consider the implications of navigating between these heights.

6. 6.

   Analyze how inaccurate tidal corrections could impact a hydrographic survey's outcomes. What measures could be taken to ensure the accuracy of tidal data used?

   Hint

   Think about how various technologies and methodologies can help improve accuracy.