Case studies: Study of a specific landslide dam and two slow-moving landslides posing a risk to urban areas.Mapping: Develop a systematic approach to the mapping of landslides, balanced against the need for timely information.Immediate response: Help stakeholders find where potential landslides may have occurred from the event that could pose a risk to life and lifeline infrastructure.Further, because the models are linked to rain amounts, the influence of climate change on rainfall can also be integrated into the forecasts. Once the landslide impact models are retrained on this new dataset, they will be used to forecast the potential impacts more accurately for potential future landslide-triggering events. This new dataset enables landslide occurrence to be linked to the rain that triggered them, allowing hindcasting of the magnitude of the impacts. This is one of the largest international landslide datasets directly related to a single storm event. To identify and map the large number of landslides triggered by Cyclone Gabrielle, the project team developed new mapping and modelling approaches to provide stakeholders with landslide intensity information in a timely manner and at a sufficient level of spatial and positional accuracy to be useful. GNS engineering geologists, Drs Chris Massey and Kerry Leith, are leading this work, which is being delivered in partnership with NEMA, Manaaki Whenua, University of Canterbury, and the University of Auckland.
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