GEOSCAN, résultats de la recherche


TitreUsing autonomous underwater vehicles (AUVs) to map the fjordic habitats in the Chilean Patagonia: a tool for the development of marine protected areas
TéléchargerTéléchargement (publication entière)
LicenceVeuillez noter que la Licence du gouvernement ouvert - Canada remplace toutes les licences antérieures.
AuteurBoswarva, K L; Howe, J A; Fox, C; Abernathy, C; Brown, K E
SourceProgram and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada; par Todd, B J; Brown, C J; Lacharité, M; Gazzola, V; McCormack, E; Commission géologique du Canada, Dossier public 8295, 2017 p. 38, (Accès ouvert)
LiensGeoHab 2017
ÉditeurRessources naturelles Canada
Réunion2017 GeoHab: Marine Geological and Biological Habitat Mapping; Dartmouth, NS; CA; mai 1-4, 2017
Documentdossier public
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Todd, B J; Brown, C J; Lacharité, M; Gazzola, V; McCormack, E; (2017). Program and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada, Commission géologique du Canada, Dossier public 8295
Sujetstechniques de cartographie; océanographie; milieux marins; organismes marins; écologie marine; gestion des ressources; etudes de l'environnement; milieu côtièr; fjords; bathymétrie; topographie du fond océanique; photographie; levés géophysiques; levés acoustiques marins; levés au sonar; sonar latéral; planification; biologie; ressources halieutiques; aquaculture; géologie marine; géophysique
ProgrammeGéoscience en mer, Géoscience de la gestion des océans
Diffusé2017 09 26
Résumé(disponible en anglais seulement)
The Chilean Patagonia is a sparse environment with approximately one million inhabitants over 240,000 square kilometres. It has one of the world's most expansive coastlines with 84,000 km of inlets, bays, fjords and channels. Recent interest from multiple stakeholders including marine renewables and salmonid fisheries has led to numerous infrastructural developments, increasing local populations and promoting economic growth. Chilean Patagonia is now the second largest exporter of salmonids in the world. The expansion of aquaculture farms into pristine waters and the impacts on native species is of high concern and signifies a need to manage the marine environment throughout Chile through mechanisms such as Marine Protected Areas. Current frameworks are restricted by the availability of physical and biological data. Due to remoteness and inaccessibility, limited underwater surveys have been conducted and the seabed is largely unmapped. The capabilities of unmanned systems allow access to these previously unreachable areas, enabling thorough recording of habitat and biological diversity. A Gavia Autonomous Underwater Vehicle (AUV) equipped with a 500 kHz Geoswath bathymetric sonar and high resolution colour camera will be deployed in multiple locations throughout Chilean Patagonia encompassing a suite of oceanographic conditions; from coastal to freshwater fjords. Data will be processed using Caris HIPS and SIPS to identify backscatter, bathymetry, slope and rugosity. The in-built camera aims to produce high quality images of quantitative and qualitative ecological data. This data combined with supervised classification methodology will be used to produce predictive habitat maps. These methods form a novel and innovative proxy for calculating large-scale spatial biodiversity and therefore a useful marine spatial planning tool, with global application.