| dbo:abstract |
The Endeavour Hydrothermal Vents (also known as the Main Endeavour Field, MEF, or EHV) are a group of hydrothermal vents in the north-eastern Pacific Ocean, located 260 kilometres (160 mi) southwest of Vancouver Island, British Columbia, Canada. The vent field lies 2,250 metres (7,380 ft) below sea level on the northern Endeavour segment of the Juan de Fuca Ridge. In 1982, dredged sulfide samples were recovered from the area covered in small tube worms and prompted a return to the vent field in August 1984, where the active vent field was confirmed by HOV Alvin on leg 10 of cruise AII-112. The temperatures within the Endeavour Hydrothermal Vent fields differs at the various depths despite some vents being just metres apart. This also has an affect on the different microorganisms and invertebrates that live within the region. In order to best grasp the scale of the EHV region, autonomous vehicles have been deployed to survey the areas and cable systems have been put in place so that that better management practices can be taken. The protected area for the Endeavour Hydrothermal Vents is located on the ridge of the Juan de Fuca plate, and the established zone is 100 km2 (39 sq mi). The vent field falls under Canadian jurisdiction and designated as a Canadian Marine Protected Area. (en) Le sorgenti idrotermali Endeavour (in lingua inglese: Endeavour Hydrothermal Vents) sono un gruppo di sorgenti idrotermali sottomarine dell'Oceano Pacifico, situate circa 260 km a sudovest dell'Isola di Vancouver, nella Columbia Britannica, in Canada. Le sorgenti idrotermali Endeavour si trovano a 2.250 m al di sotto del livello del mare, in un'area di espansione del fondale oceanico, che fa parte della dorsale di Juan de Fuca. I camini idrotermali si formano in aree vulcanicamente attive, come le dorsali oceaniche, dove due placche tettoniche sono in fase distensiva e tendono a separarsi tra loro, dando luogo alla formazione di nuova crosta oceanica. In queste zone, l'acqua penetra attraverso la crosta incandescente subendo una variazione di temperatura e pressione che causa la precipitazione dei sali minerali e che può portare alla formazione dei camini idrotermali. Quando la temperatura dei fluidi idrotermali diminuisce in seguito alla miscelazione con la più fredda acqua marina, l'ambiente raggiunge condizioni di equilibrio termico e chimico che favoriscono lo sviluppo di una comunità biologica unica. (it) |
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https://www.mbari.org/at-sea/vehicles/autonomous-underwater-vehicles/seafloor-mapping-auv/ https://laws-lois.justice.gc.ca/eng/acts/o-2.4/ http://laws-lois.justice.gc.ca/PDF/SOR-2003-87.pdf https://laws-lois.justice.gc.ca/eng/acts/f-14/ |
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The Endeavour Hydrothermal Vents (also known as the Main Endeavour Field, MEF, or EHV) are a group of hydrothermal vents in the north-eastern Pacific Ocean, located 260 kilometres (160 mi) southwest of Vancouver Island, British Columbia, Canada. The vent field lies 2,250 metres (7,380 ft) below sea level on the northern Endeavour segment of the Juan de Fuca Ridge. In 1982, dredged sulfide samples were recovered from the area covered in small tube worms and prompted a return to the vent field in August 1984, where the active vent field was confirmed by HOV Alvin on leg 10 of cruise AII-112. (en) Le sorgenti idrotermali Endeavour (in lingua inglese: Endeavour Hydrothermal Vents) sono un gruppo di sorgenti idrotermali sottomarine dell'Oceano Pacifico, situate circa 260 km a sudovest dell'Isola di Vancouver, nella Columbia Britannica, in Canada. Le sorgenti idrotermali Endeavour si trovano a 2.250 m al di sotto del livello del mare, in un'area di espansione del fondale oceanico, che fa parte della dorsale di Juan de Fuca. (it) |
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Endeavour Hydrothermal Vents (en) Sorgenti idrotermali Endeavour (it) |
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