Question 1051Navigation General
70% to passWhat should you expect when you encounter a tsunami in the open ocean?
A
No noticeable change from the existing sea state
B
A major wave of extreme height and length
C
Violent seas from mixed directions
D
Winds increasing to gale force from the northwest in the Northern Hemisphere
AI Explanation
The correct answer is A) No noticeable change from the existing sea state. In the open ocean, a tsunami typically does not cause a noticeable change in the existing sea state. Tsunamis are long-wavelength, low-amplitude waves that are virtually undetectable in the open ocean. The wave height of a tsunami in the open ocean is generally less than 1 meter, making it indistinguishable from normal ocean swells. Options B, C, and D do not accurately describe the typical open-ocean behavior of a tsunami, as they suggest much more dramatic changes to the sea state.
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