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Tidal Action on Land

Tidal Action on Land

(OP)
Does anyone have any quantitative representations of tidal influence on land with respect to GPS?

RE: Tidal Action on Land

(OP)
They measure relative movement.  Earth's crust moves just like the oceans, but only on a smaller scale - related to the density difference between water and rock.  That's why it's important to use differential GPS when surveying.  A base station is set up on a known point and the difference between what the point is known as and is being reported is subtracted from the roving unit's readings.

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