GEOSCAN, résultats de la recherche


TitreA three-dimensional mapping of the ocean based on environmental data
TéléchargerTéléchargement (publication entière)
LicenceVeuillez noter que la Licence du gouvernement ouvert - Canada remplace toutes les licences antérieures.
AuteurSayre, R G; Wright, D J; Breyer, S P; Butler, K A; Van Graafeiland, K; Costello, M J; Harris, P T; Goodin, K L; Guinotte, J M; Basher, Z; Kavanaugh, M T; Halpin, P N; Monaco, M E; Cressie, N A; Aniello, P; Frye, C E; Stephens, D
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. 106, (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; études côtières; conservation; organismes marins; écologie marine; gestion des ressources; peuplements biologiques; etudes de l'environnement; écosystèmes; géochimie de l'eau de mer; température de l'eau; oxygène; nitrate; phosphate; silicates; biologie
ProgrammeGéoscience en mer, Géoscience de la gestion des océans
Diffusé2017 09 26
Résumé(disponible en anglais seulement)
Oceanographers have long recognized and described persistent, large, water masses which partition the global ocean into chemically and physically distinct volumetric regions. We constructed a regularly spaced ocean point mesh grid from sea surface to seafloor, and attributed these points with the 2013 World Ocean Atlas (WOA) dataset, version 2, 57 year average values for six physical and chemical environment parameters (temperature, salinity, dissolved oxygen, nitrate, phosphate, and silicate). The database of over 52 million points represented the global ocean in x, y, and z dimensions. These points were statistically clustered to define 37 distinct volumetric units, here called Ecological Marine Units (EMUs). The EMUs represent physically and chemically distinct water volumes based on spatial variation in the six marine environmental characteristics used. Twenty two of the 37 EMUs are globally or regionally extensive, and accounted for 99% of the ocean volume, while the remaining 15 were smaller and shallower, and occurred around coastal features. We characterized the horizontal and vertical dimensions of EMUs and mapped distinct marine regions of varying size and depth. We found vertical separation into three broad depth zones, and general spatial correspondence with the major global water masses. The EMUs are an open access resource, and are intended to be useful for disturbance assessments, ecosystem accounting exercises, conservation priority setting and marine protected area network design, and other research and management applications.