Glassey PJ, Saunders WSA. 2021. Earthquake-Induced Landscape Dynamics (EILD) end-user and stakeholder tools engagement plan. Lower Hutt (NZ): GNS Science. 39 p. (GNS Science report; 2021/09). doi:10.21420/W7BP-XH58.
Abstract
The 14 November 2016 MW 7.8 Kaikōura Earthquake generated thousands of landslides, hundreds of significant landslide dams and damaged hillslopes that are now susceptible to failure during rainstorms and aftershocks. This debris, when further mobilised, will create new hazards, including further landslides, dams, rapid aggradation and formation of alluvial fans and floodplains, and increased river channel instability as the debris cascades from hillslope to sea. These hazards can persist for decades, requiring active management by the impacted communities and stakeholders. The ‘Earthquake-Induced Landslide Dynamics’ research programme (EILD) is funded from 2018 to 2023 to investigate the impacts of the Kaikōura event and integrate field, laboratory and numerical modelling to determine how the hillslopes and rivers will respond to future forcing events, focusing on: forecasting landslide severity at different magnitudes of ground shaking and rain; quantifying post-earthquake landslide triggering and reactivation thresholds from ground shaking, rain and time; evaluating landslide dam longevity; determining how far landslide debris volumes travel downslope, once triggered; modelling how sediment cascades from hillslope to sea; and assessing the performance of earthworks infrastructure subject to landslide. A set of tools will be developed from the research to inform landslide risk and residual risk-management methods and practices for stakeholders affected by the Kaikōura Earthquake and those that may be affected by future events. Engagement with identified partners, stakeholders and end-users of the EILD research programme will solicit input and encourage collaboration to develop useful, useable and used tools in mitigating against earthquake-induced landslide risks. In addition, the engagement will promulgate the results of the research as widely as possible to relevant end-users. The tools will evolve, along with end-users needs, and therefore the process will be iterative. Initial mapping of output and tools to stakeholders and end-users needs has been undertaken, and an engagement plan over the next three years (2021–2023) has been developed. Many engagement methods will be used, ranging from hui, advisory group meetings, regular programme meetings, specific invited workshops and training, special conference sessions, targeted road shows and surveys. Risks that may hinder or impact engagement and possible mitigations against these risks have been identified. (auth)
