Environmental Geology
- Gothenburg Northern Archipelago
System Analysis
- What effects the possibility of a stressor to reach an endpoint? Focus on coastal areas.
The second system analysis was based on the question of what parameters effects a pollutant on the way from source to endpoint? The idea was to model more generally for a coastal area to later be used as a tool for the weigting in the RRRR analysis. ( see under Methods: RRRR)
The parameters used and their defenition in our model can be seen in Table 1 below.
Table 1. The parameters and their definitions, used in the system analysis of the Coastal Area.
Results of analysis
A Cross-impact matrix was made, Table 2, and an Cross effect diagram of the resulting sums, Figure 1.
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Table 2. Cross-impact matrix of the Coastal area system.
Figure 1. Cause and effect diagram of the Coastal area system.
Figure 2. System relationship graph of the Coastal area system
System relationship graph (Figure 2) shows how the parameters influence each other. Due to the large amount of parameters only the strong and crucial influences are shown in the diagram.
The parameters Behavior of pollutant, Decay of pollutant, Type of source and Distance have crucial influence on each other and therefore are important parameters affecting the system dynamics. The Stratigraphy and Topography has a total large influence on the system as shown in the cause effect diagram(Figure 1) although they do not have any crucial influence on the other parameters and therefore may not be as dominant in the system as shown in the cause effect diagram.
The resulting Cause and effect diagram (Figure 1) shows that Topography and Stratigraphy are the most dominant parameters in the system. The Behaviour of pollutant has also great influence on the other parameters but is also quite influenced. The other parameters are fairly influential to the system except Type of pollution event which is the less active parameter.
