Question 1985Navigation General70% to pass
In some river mouths and estuaries the incoming high-tide wave crest overtakes the preceding low-tide trough. This results in a wall of water proceeding upstream, and is called a _______________.
AI Explanation
The correct answer is C) bore.
A bore is a tidal phenomenon that occurs in some river mouths and estuaries, where the incoming high-tide wave crest overtakes the preceding low-tide trough, resulting in a wall of water proceeding upstream. This happens when the tidal range is large and the seafloor gradient is relatively shallow, allowing the fast-moving high tide to catch up with the receding low tide.
The other options are incorrect because:
A) A boundary wave is not the term used to describe this specific tidal phenomenon.
B) A seiche is a standing wave in an enclosed or partially enclosed body of water, which is different from a bore.
D) A surge is a sudden and unexpected rise in water level, not specifically related to the tidal crest overtaking the trough.
Related Questions
#1983 A swift current occurring in a narrow passage connecting two large bodies of water, which is produced by the continuously changing difference in height of tide at the two ends of the passage, is called a _______________.#1984 Current refers to the _______________.#1986 Your vessel goes aground in soft mud. You would have the best chance of refloating it on the next tide if it grounded at _______________.#1987 When the moon is at first quarter or third quarter phase, what type of tides will occur? #1988 Neap tides occur only _______________.