Nat. Hazards Earth Syst. Sci., 18, 2273–2293, 2018 https://doi.org/10.5194/nhess-18-2273-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. Estimating network related risks: A methodology and an application in the transport sector Jürgen Hackl1, Juan Carlos Lam1, Magnus Heitzler2, Bryan T. Adey1, and Lorenz Hurni2 1Institute of Construction and Infrastructure Management, ETH Zurich, 8092 Zurich, Switzerland 2Institute of Cartography and Geoinformation, ETH Zurich, 8092 Zurich, Switzerland Correspondence: Jürgen Hackl (
[email protected]) and Juan Carlos Lam (
[email protected]) Received: 19 December 2017 – Discussion started: 2 January 2018 Revised: 16 July 2018 – Accepted: 31 July 2018 – Published: 27 August 2018 Abstract. Networks such as transportation, water, and power 1 Introduction are critical lifelines for society. Managers plan and execute interventions to guarantee the operational state of their net- Managers of networks, such as transportation, water and works under various circumstances, including after the oc- power, have the continuous task to plan and execute inter- currence of (natural) hazard events. Creating an interven- ventions to guarantee the operational state of their networks. tion program demands knowing the probable direct and in- This also applies in the aftermath of (natural) hazard events. direct consequences (i.e., risk) of the various hazard events As the resources available to managers to protect their net- that could occur in order to be able to mitigate their ef- works are limited, it is essential for managers to be aware fects. This paper introduces a methodology to support net- of the probable consequences (i.e., risk) in order to set pri- work managers in the quantification of the risk related to orities and be resource-efficient (Eidsvig et al., 2017).