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Deep ventilation event during fall and winter 2015 in the Puyuhuapi Fjord (44.6°S)

dc.contributorFONDECYT 11140161en-US
dc.contributores-ES
dc.creatorPérez-Santos, Iván
dc.date2017-03-09
dc.date.accessioned2020-11-05T13:35:22Z
dc.date.available2020-11-05T13:35:22Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol45-issue1-fulltext-25
dc.identifier10.3856/vol45-issue1-fulltext-25
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/158568
dc.descriptionThe Puyuhuapi fjord has previously been reported as one of the hypoxic fjords in Patagonia (dissolved oxygen -DO below 2 mL L-1). Hydrographic sampling between 1995-2015 confirmed hypoxia below 100 m depth, down to the bottom (250 m). A line of sensors at an oceanographic mooring in Puyuhuapi were deployed to continuously record the temporal-vertical behaviour of water column temperature and salinity from the surface down to ~120 m, from February to July 2015. A multi-Parameter water quality sonde was deployed at the bottom of the line, with a DO optical sensor. From February to mid-May, hypoxia was sustained (1.4-1.6 mL L-1). However, from May until the end of June, DO values increased (2.8 mL L-1), exceeding the hypoxia threshold. This was the first event of deep ventilation reported in a Patagonia fjord. During this time period, deep water temperatures increased by ~1.3 °C, coinciding with the decreased in salinity from 33.6 to 32.8. The main cause of this event was attributed to the arrival of a new volume of mixed oceanic water into the fjord, transported by Modified Subantartic Water, with warm temperatures and slightly higher DO values, given its origin in the surface layer of the outer region of the Patagonian fjords and channels.en-US
dc.descriptiones-ES
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol45-issue1-fulltext-25/451
dc.sourceLatin American Journal of Aquatic Research; Vol 45, No 1 (2017); 223-227en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 45, No 1 (2017); 223-227es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectDissolved oxygen; hypoxia; ventilation; Puyuhuapi; Patagonian fjords; southern Chileen-US
dc.subjectes-ES
dc.titleDeep ventilation event during fall and winter 2015 in the Puyuhuapi Fjord (44.6°S)en-US
dc.titlees-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


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