{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T13:40:21Z","timestamp":1765546821535,"version":"build-2065373602"},"reference-count":64,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T00:00:00Z","timestamp":1638489600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Quantifying the contribution of sediment delivered to rivers by landslides is needed to assess a river\u2019s sediment load in regions prone to mass wasting. Monitoring such events, however, remains difficult. This study utilised six years of remotely sensed imagery (PlanetScope and RapidEye, Imagery courtesy of Planet Labs, Inc., San Francisco, CA, USA), topographic surveys, and field observation to examine a hydro-geologically controlled, retrogressive landslide near a tributary to the Peace River, British Columbia. The slide has been active since 2014, delivering large amounts of sediment to the Peace River, visible in a persistent plume. Here, we quantify the landslide\u2019s sediment contribution to the Peace River, assess the hydro-meteorological drivers of plume variability, and test whether plume activity can be directly linked to landslide activity for monitoring purposes. Our results show that the landslide on average delivered 165,000 tonnes of sediment per year, a seven-fold increase of the tributary\u2019s regular load and near half of the Peace River\u2019s load at this location. Due to continuous erosion of landslide material, sediment supply is steady and fuelled by repeated failures. Using thresholding, the identification of \u2018high\u2019 plume activity was possible, which positively correlated with the water level in a nearby reservoir, a proxy for the state of groundwater in this region. We reason that \u2018high\u2019 plume activity is linked to increased groundwater pressure because landslide activity is groundwater-controlled and failures fuel sediment delivery to the Peace River. Using readily available imagery, it is thus possible to monitor the activity of this recurrent landslide when field data are difficult to obtain.<\/jats:p>","DOI":"10.3390\/rs13234901","type":"journal-article","created":{"date-parts":[[2021,12,6]],"date-time":"2021-12-06T03:10:38Z","timestamp":1638760238000},"page":"4901","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Remote Sensing of Landslide-Generated Sediment Plumes, Peace River, British Columbia"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6324-3307","authenticated-orcid":false,"given":"Katie E.","family":"Hughes","sequence":"first","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V89 5C2, Canada"},{"name":"Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Prince George, BC V2L 1R5, Canada"}]},{"given":"Amanda","family":"Wild","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V89 5C2, Canada"}]},{"given":"Eva","family":"Kwoll","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V89 5C2, Canada"}]},{"given":"Marten","family":"Geertsema","sequence":"additional","affiliation":[{"name":"Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Prince George, BC V2L 1R5, Canada"}]},{"given":"Alexandra","family":"Perry","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V89 5C2, Canada"}]},{"given":"K. Darcy","family":"Harrison","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V89 5C2, Canada"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1489","DOI":"10.5194\/se-10-1489-2019","article-title":"Spatio-temporal dynamics of sediment transfer systems in landslide-prone Alpine catchments","volume":"10","author":"Clapuyt","year":"2019","journal-title":"Solid Earth"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1437","DOI":"10.1002\/esp.3958","article-title":"The role of chronic and episodic disturbances on channel\u2013hillslope coupling: The persistence and legacy of extreme floods","volume":"41","author":"Dethier","year":"2016","journal-title":"Earth Surf. Process. 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