a future rhine model for accidental spills? · 6 rws unclass rps asa role – model/data...
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A future Rhine model for accidental spills? RPS-ASA model Chemmap
Jaap van Steenwijk,
Bert van Munster,
Rudi Heymen.
Supported by RPS-ASA and Deltares
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2 RWS UNCLASS
Modeling environmental incidents
March 4, 2016
• In case of an incident with chemicals we want to know how substances spread out in environment and there effects.
• So Rijkswaterstaat (RWS) has models for paths and fate of oils and chemicals in our water environment.
• We use the hydrodynamic information from the models that calculate the water levels and flows.
• Our Meteorological institute delivers a wind field for modelling drifting and volatile substances
• Few examples:
– Oil in the North sea
– Styrene in the Western Scheldt
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3 RWS UNCLASS
Example of Oil Spill Model – Flooding & Drying
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4 RWS UNCLASS
Collision January 17 2015
spill 140 m3 (?) Styreen/ethylbenzene
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Project scope
• In the past various departments of RWS used different software’s. We started in 2007 with harmonization.
• For salt waters, notably North Sea and Waddensea RWS adopted ASA’s software suite (Oilmap, Chemmap). Chemmap uses particle tracking to forecast fate and transport of such spills.
• The model framework combines operational forecast results of 2Dsimulation models.
• RWS strives for harmonization with freshwater lakes and rivers. Main motivation: a uniform working environment which is highly relevant during “stressful” situations.
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6 RWS UNCLASS
RPS ASA Role – Model/data integration
•RPS ASA Role: to provide tools to predict the movement and fate of Oil and Chemical spills, and to support Search & Rescue operations (SAR-Coast Guard).
•How: customizing RPS tools (OILMAP, CHEMMAP, SARMAP), using MATROOS database whit operational forecasting of water and wind.
•Tools: OIL/SAR/CHEMMAP have same User Interface (> ease of use) but have different inputs and outputs (> challenge).
– Oil & SAR has been customized to take into account varying water depths (flooding/drying)
– Chemmap has been adjusted to operate in rivers.
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Oil Spill & SAR models (OIL/SARMAP)
Static data File
Used by the model to “strand” and “float” the oil or SAR object
Database:
Bathymetry for Area of Interest
Emergency Response:
User creates spill/SAR scenario and ask inputs to MATROOS database
Wind file
Current file
Surface elevation
MATROOS HTTP /
XML
+
Total water depth
{t, xyz}
ASA-MAP
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8 RWS UNCLASS
Chemical Spill Model
•CHEMMAP is a 3D chemical pollutant
transport model. It requires 2/3D currents
and interacts with coast & sea/river-floor.
•River models provides 1D River points and
those get converted to a 2D currents field to
be used in CHEMMAP.
Script in CHEMMAP simplifies the workflow (“point and click”), no external steps required. Use of MATROOS server request (html/xml).
Coastline (river shoreline) and Bathymetry imported into CHEMMAP on-the-fly
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Output 1D-Sobek -> 2D-currents
SOBEK calculation points having dynamic flow results (Q1D)
V2D = f(Q1D,W1D,A1D)
Direction: towards next section
2D section on basis of Width1D and loction of other points.
CHEMMAP uses average of 4 corners
extra sections required to prevent particles from sticking to the wall.
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Adequate longitudinal mixing
Introduction of additionial grid points transversely
+1 +4
1D river flow + uniform dispersion =
too low longitudinal mixing!
Relative transverse coordinate (-)
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Calibration options
RAM
CHEMMAP
RAM: Accidental Spill Model for river Rhine
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12 RWS UNCLASS
Example spill for river Rhine branch
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Conclusions
1. The model framework for the sea is expandable with river systems and covers the full domain of interest: catchment to coast.
2. Using existing operational hydrodynamic models
3. RWS has extended the model of the Rhine till Maxau
4. Extension to Bodensee, side branches is possible
1. If hydrological data is available
5. Transport in water and in the air (volatile compounds)
6. Database with chemicals (CHEMMAP) and crude oils (OILMAP) available.
7. Uniform approach minimises operation & maintenance costs for RWS
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Chemmap main screen Look and feel userinterface
March 4, 2016
Menu Bar
GEO Data
Map presentation of the
Model results
Model functionality
Map options
Time Slider
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15 RWS UNCLASS March 4, 2016
Create New Scenario
Click in the map for a spill site
1
2
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New Scenario
March 4, 2016
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17 RWS UNCLASS
Benzene Spill
March 4, 2016
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Get Wind Data
March 4, 2016
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19 RWS UNCLASS
Get Current Data
March 4, 2016
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20 RWS UNCLASS
Executing River Script
March 4, 2016
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21 RWS UNCLASS
Wind and Current Data
March 4, 2016
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Water Parameters
March 4, 2016
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Air Parameters
March 4, 2016
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24 RWS UNCLASS
Review Spill and Data
March 4, 2016
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25 RWS UNCLASS
Chemical Model
March 4, 2016
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Model Results (base map)
March 4, 2016
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Model Results (open street map)
March 4, 2016
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Model Display Options
March 4, 2016
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Model Results (movie)
March 4, 2016
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Thank you for your attention
March 4, 2016
2020 > ????