Digital hydro-morphological twin for the trilateral Wadden Sea area
The BMDV-mFUND project – TrilaWatt develops an innovative digital geodata and analysis infrastructure for the trilateral Wadden Sea area (Netherlands, Germany and Denmark).
This supports the planning and maintenance of transport infrastructure with harmonized, quality-assured data on geomorphology, sedimentology and hydrodynamics.
Geodata, analysis and documentation methods are linked via Web portals and services to form an assistance system.
About the Project
The monitoring of the quality status of the Wadden Sea, and the planning and maintenance of transport infrastructure in the Wadden Sea Region are done along sectoral and country lines. This has led to fragmentation of measures and polices that have made cross-border collaboration in, for example data sharing and accessibility difficult. There are large amounts of data in the trilateral Wadden Sea region that are distributed across the region, difficult to access and are not homogenized.
Furthermore, there are various sectors with divergent interests and goals, who are competing for space in the maritime spatial planning of the Southern North Sea. These goals include the acceleration of renewable energy production, economic development, nature conservation, Shipping routes and ports accessibility, etc. Due to the lack of a trilateral geodatabase and analysis infrastructure, the planning of these goals and interests lack a holistic understanding of the Wadden Sea on a system level.
Thus, availability of quality assured and consistent database for the Wadden Sea is one of the major current challenges facing studying the Wadden Sea on system level. Reproducing the complex physical processes in the Wadden Sea area, especially in tidal mudflat regions such as large-scale sediment transport pathways, depend on availability of an accurate data situation, which is currently heterogeneous, patchy and not harmonized across borders.
for detailed information please click on images to enlarge
The GIF provided above containing the depth elevation (bathymetry), mean grain size (sedimentology) and a GIF showing both bathymetry and sedimentology simultaneously, respectively.
Each image shows data simulated for each year selected for this simulation animation. Some images may not belong specifically to the year that they represent for visualization purposes only.
The main purpose of showing these short animations is to show the viewer how the seabed changes its elevation distribution and with it, the soil composition, from year to year and how the sedimentation and erosion process are active in such dynamic areas, helping us to understand the importance of obtaining detailed information even in the smallest scales to improve the results of the different intended studies.
Tidal characteristic values (e.g., tidal range) are required in the entire trilateral Wadden Sea for marine spatial planning, coastal and offshore construction, ecological tasks, etc. We can support these tasks with numerical simulation results from the entire trilateral Wadden Sea area. Exemplary results, as shown, are:
- Tidal range
- Peak sea surface elevation
- Mean, peak, and residual flood
- ebb current velocity
- bed shear stress
Tidal characteristics will be computed in the years 2005, 2010, 2015, and 2020 and will be available in common gridded download formats.
Increasingly higher resolutions and good data availability require efficient support for navigation and handling (e.g. difference formation or clipping). This is especially true for complex process chains. In TrilaWatt, this process is to be supported by an interactive, web-based assistance system that can be used to generate any number of user-defined data products
The urgent need for constructing a terminal for Liquefied Natural Gas (LNG) is obvious for reducing / stopping the gas import from Russia to Germany. This includes fundamental data and analyses about water level and velocities direct at and in the surrounding of the construction site.
- In a first step the commissioned consultant ARCADIS used the present data from the web-site of EasyGSH-DB https://mdi-de.baw.de/easygsh/EasyEN_index.html#home.
- For detailed information in the surrounding of the planned construction time series of water level and velocities are extracted out of the EasyGSH-data set by BAW.
- The compilation of the used products is carried out with a GIS system. The planned assistance system of TrilaWatt could be used online and will be more practical for these appli-cations.
- The following analyses are scheduled: Analyses of velocities and water levels are important for the construction level.
Together this gives a feasible location option for the possible / optimal position of a terminal.
In summary, this application shows that the EasyGSH and TrilaWatt data products and analyses provide useful insights into the behavior of the Trilateral Wadden Sea. In particular, the consistent quality assured, and long-term data form a good basis for a wide variety of usage!
Route planning and optimization of cable routes from Off-Shore-Wind-Energy-Parks to the mainland are of major interest for the Offshore Wind Energy-Industry. Planning of new and optimization of actual routes and burial depth must require different objectives concerning morphological stability, location outside of fairways, sedimentological and hydrodynamic circumstances, … - for longer time span. The compilation of the used products is carried out with a GIS system. The planned assistance system of TrilaWatt could be used online for that purpose convenient.
Herein this example the realized analysis are:
- Selecting the lowest and highest bathymetry elevations (for a chosen time period) as ameasure for the morphologic activity as a planar map
- Combining the morphologic activity map with the sediment information for a technical realization (burying depth)
- Analyses of velocities and water levels are important for the construction level
All this gives a feasible location option for the possible optimal cable routes. Moreover, these products and analyses are expedient for the recently planned hydrogen pipeline between Norway (Equinor) and Germany (RWE)!
In summary, this application shows that the TrilaWatt data products and analyses provide useful insights into the behavior of the Trilateral Wadden Sea. In particular, the con-sistent quality assured, and long-term data form a good basis for a wide variety of usage!
in preparation - more information will follow soon ...
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