Question

Which of the following has the meaning 'harbour wave'?

• A. Tsunami
• B. Hurricane
• C. Cyclone
• D. Seiche

Hint:

Remember the linguistic breakdown:
tsu = harbor.
nami = wave.
This Japanese origin is a popular general science and oceanography question.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Oceanographic phenomena are often named using classical or regional terms that describe their physical characteristics or effects on coastal structures.

Step 2: Detailed Explanation:
Let us analyze the origin and meaning of each term:
The word "Tsunami" is a Japanese term composed of two kanji characters: "tsu" ($\text{津}$) which translates to "harbor", and "nami" ($\text{波}$) which translates to "wave".
Therefore, "Tsunami" literally means "harbor wave".
These waves are generated by large-scale displacements of water, typically caused by undersea earthquakes, volcanic eruptions, or coastal landslides.
Because of their long wavelengths, they are barely noticeable in the deep ocean but build up to terrifying heights as they enter shallow harbor waters.
A Hurricane and a Cyclone are atmospheric tropical storms characterized by low-pressure centers and strong winds, named after regional words for wind spirits or circular motion.
A Seiche is a standing wave in an enclosed or partially enclosed body of water, derived from a French word meaning to sway or dry up.
Therefore, Tsunami is the term that translates to "harbor wave".

Step 3: Final Answer:
Tsunami has the literal meaning 'harbour wave'.