Search

Geertsema, Marten; Menounos, Brian; Bullard, Gemma; Carrivick, Jonathan; Clague, John; Dai, Chunli; Donati, Davide; Ekstrom, Goran; Jackson, Jennifer; Lynett, Patrick; Pichierri, Manuele; Pon, Andy; Shugar, Dan; Stead, Doug; Del Bel Belluz, Justin; Friele, Pierre; Giesbrecht, Ian; Heathfield, Derek; Millard, Tom; Nasonova, Sasha; Schaeffer, Andrew; Ward, Brent; Blaney, Darren; Blaney, Erik; Brillon, Camille; Bunn, Chris; Floyd, William; Higman, Bretwood; Hughes, Katie; McInnes, Will; Mukherjee, Kriti; Sharp, Meghan — 2022-02-14 <p style="margin-top:17px;margin-bottom:17px;text-align:justify;">We describe and model the evolution of a recent landslide and outburst flood in the southern Coast Mountains, British Columbia, Canada. About 18 Mm³ of rock descended 1000 m from a steep valley wall and traveled across the toe of a glacier before entering a 0.6 km² glacier lake and producing a &gt;100-m high wave. Water overtopped the lake outlet and scoured a 10-km long channel before depositing debris on a 2 km² fan below the lake outlet. Floodwater, organic detritus, and fine sediment entered a fjord where it produced a 70-km long turbidity current and altered turbidity, water temperature, and water chemistry for weeks. The outburst flood destroyed forest and culturally significant salmon spawning and rearing habitat. Physically based models of the landslide, the displacement wave, and the flood provide real-time simulations of the event and can improve understanding of similar hazard cascades and the risk they pose.</p> https://creativecommons.org/publicdomain/zero/1.0/

Brideau, Marc-Andre; Lau, Carie-Ann; Brayshaw, Drew; Lipovsky, Panya; Cronmiller, Derek; Friele, Pierre; Geertsema, Marten; Wells, Gareth — 2025-01-01 This preliminary landslide database includes 10,704-point locations with assigned landslide type, material (surficial, rock, anthropogenic) type, point location type (headscarp vs. deposit), and qualitative location confidence (low, moderate, high). Where known, volume estimate, the date of occurrence, trigger, contributing factor, and reference are provided. The inventory contains both landslide events (discrete recorded period of movement) and landslide features (slope with morphology consistent with past or ongoing movement). No characterization of the current level of landslide activity or hazard is provided. The landslides have mostly been identified using Google Earth and publicly available lidar. Previously published landslide databases have also been incorporated and referenced. Landslide type attribution should be considered preliminary. Version 10.0 includes the addition of approximately 570 landslide point locations over version 9.0. This version also marks the addition of Marten Geertsema (inventory of 202 landslide dammed lake locations) as co-author. Point location and attribute data are provided as .csv file which can be imported in GIS software and as .kmz file for visualization in Google Earth. Summary statistics are provided in a separate spreadsheet. https://creativecommons.org/licenses/by/4.0/legalcode