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Tidal excursion refers to the average distance a water particle travels between low-water slack tide and high-water slack tide during a tidal cycle. It measures how far a body of water moves back and forth due to tidal currents. | Tidal excursion refers to the average distance a water particle travels between low-water slack tide and high-water slack tide during a tidal cycle. It measures how far a body of water moves back and forth due to tidal currents. | ||
This phenomenon is influenced by various factors, including tidal phases, bathymetry and local geography. In some locations, such as in the English Channel the tidal excursion can be around 18 kilometers. The tidal excursion length is site-specific and depends on the characteristics of the location. | This phenomenon is influenced by various factors, including tidal phases, bathymetry and local geography. This is important to take into account when planning activities that will change the bathymetry, such as dredging and sand and gravel extraction. If the area affected is larger than the tidal excursion, there are high chances that stratification will occur, limiting gas exchanges with the atmosphere which can cause eutrophication. | ||
In some locations, such as in the English Channel the tidal excursion can be around 18 kilometers. The tidal excursion length is site-specific and depends on the characteristics of the location. | |||
==MSP Challenge== | ==MSP Challenge== | ||
In the MSP Challenge, the tidal excursion layer is not editable, but allows players to get insight into water movement and adjust their strategies accordingly. | In the MSP Challenge, the tidal excursion layer is not editable, but allows players to get insight into water movement and adjust their sand and gravel extraction strategies accordingly. | ||
=North Sea= | =North Sea= | ||
This datalayer is an output of the [https://or-else.nl/ OR ELSE] project and is available in the Sand Extraction Edition and in the Digitwin Edition. | |||
== Sand Extraction Edition == | == Sand Extraction Edition == | ||
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===Data Source=== | ===Data Source=== | ||
This layer was provided by partners from the ORELSE project. | This layer was provided by partners from the ORELSE project. | ||
Creator: Mohammad Daliri (NIOZ). | |||
===Original Title=== | ===Original Title=== | ||
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===Description=== | ===Description=== | ||
This dataset represents the spatial distribution of tidal excursion (in kilometers) on the Southern North Sea. | This dataset represents the spatial distribution of tidal excursion (in kilometers) on the Southern North Sea. | ||
Derived from GETM (GeneralEstuarine Transport Model) simulation outputs, forced by ECMWF ERA-5 meteorology, TOPEX-POSEIDON tides, NOOS bathymetry, and ORAS4 temperature/salinity boundaries. | |||
===Creation Date=== | ===Creation Date=== | ||
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This layer is not present in the Eastern Mediterranean Sea.<headertabs /> | This layer is not present in the Eastern Mediterranean Sea.<headertabs /> | ||
[[Category:Environmental conditions]] | |||
Latest revision as of 09:30, 12 January 2026
This page was last edited on 12 January 2026, at 09:30. Content is available under GPLv3 unless otherwise noted.
Co-funded by the European Union.