TY - JOUR
T1 - Info-Gap robustness pathway method for transitioning of urban drainage systems under deep uncertainties
AU - Zischg, Jonatan
AU - Goncalves, Mariana L.R.
AU - Bacchin, Taneha Kuzniecow
AU - Leonhardt, Günther
AU - Viklander, Maria
AU - Van Timmeren, Arjan
AU - Rauch, Wolfgang
AU - Sitzenfrei, Robert
PY - 2017
Y1 - 2017
N2 - In the urban water cycle, there are different ways of handling stormwater runoff. Traditional systems mainly rely on underground piped, sometimes named 'gray' infrastructure. New and so-called 'green/blue' ambitions aim for treating and conveying the runoff at the surface. Such concepts are mainly based on ground infiltration and temporal storage. In this work a methodology to create and compare different planning alternatives for stormwater handling on their pathways to a desired system state is presented. Investigations are made to assess the system performance and robustness when facing the deeply uncertain spatial and temporal developments in the future urban fabric, including impacts caused by climate change, urbanization and other disruptive events, like shifts in the network layout and interactions of 'gray' and 'green/blue' structures. With the Info-Gap robustness pathway method, three planning alternatives are evaluated to identify critical performance levels at different stages over time. This novel methodology is applied to a real case study problem where a city relocation process takes place during the upcoming decades. In this case study it is shown that hybrid systems including green infrastructures are more robust with respect to future uncertainties, compared to traditional network design.
AB - In the urban water cycle, there are different ways of handling stormwater runoff. Traditional systems mainly rely on underground piped, sometimes named 'gray' infrastructure. New and so-called 'green/blue' ambitions aim for treating and conveying the runoff at the surface. Such concepts are mainly based on ground infiltration and temporal storage. In this work a methodology to create and compare different planning alternatives for stormwater handling on their pathways to a desired system state is presented. Investigations are made to assess the system performance and robustness when facing the deeply uncertain spatial and temporal developments in the future urban fabric, including impacts caused by climate change, urbanization and other disruptive events, like shifts in the network layout and interactions of 'gray' and 'green/blue' structures. With the Info-Gap robustness pathway method, three planning alternatives are evaluated to identify critical performance levels at different stages over time. This novel methodology is applied to a real case study problem where a city relocation process takes place during the upcoming decades. In this case study it is shown that hybrid systems including green infrastructures are more robust with respect to future uncertainties, compared to traditional network design.
KW - City transformation
KW - Green/blue infrastructure
KW - Hybrid systems
KW - Info-Gap robustness pathway method
KW - Network transitioning
KW - SWMM
UR - http://www.scopus.com/inward/record.url?scp=85029094937&partnerID=8YFLogxK
U2 - 10.2166/wst.2017.320
DO - 10.2166/wst.2017.320
M3 - Article
SN - 0273-1223
VL - 76
SP - 1272
EP - 1281
JO - Water Science and Technology
JF - Water Science and Technology
IS - 5
ER -