Question

how is the sea level measured​

Answer 1

Explanation:

satellite can record the level of ocean around the globe , whiletide gauges are used to measure the height of water with respect to a fixed, nearby point on land . oceangraphers combine data from satellite and tide gauges to study global effects , like the rise in average sea level that result from climate change.

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Answer 2

Answer:

All this is in the world are connected to each other.Basing on the high tides and low tides on the level of sea of frequent intervals the mean level of the sea is measured by (M.S.L)