IAPSO · International Association for the Physical Sciences of the Oceans

Commission on Sea Level and Tides

The CSLT promotes international collaboration and scientific coordination on all aspects of sea level and tides — from mean sea level variability and tides to extreme events, coastal impacts, and the geodetic techniques used to observe them.

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A graduated tide staff on a harbour wall, used to read sea level against a fixed datum — the same principle behind every gauge in the global tide-monitoring network.
Tide gauge station at Le Conquet (France) Credit: Marta Marcos
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