Which of the following is correct regarding mean sea level?
A) A consistent value has yet to be determined due to all the variables involved in producing the tides.
B) It is at the same level along the entire North American coast.
C) It is calculated based on average tidal levels recorded hourly at a given site over a period of many years.
D) It has very little variability across all ocean basins and, therefore, is treated as an absolute value.

Question

Quizplus · Accepted Answer

Mean sea level is calculated based on average tidal levels recorded hourly at a given site over a period of many years, usually around 19 years. It is a standardized reference point used for various purposes including navigation, engineering, and climate monitoring. While there are some regional variations due to factors such as ocean currents, atmospheric pressure, and tectonic uplift or subsidence, mean sea level is generally treated as a relative value across all ocean basins.

Which of the Following Is Correct Regarding Mean Sea Level