Open WL Archief (OWA)

Over het archief

Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

[ meld een fout in dit record ]

mandje (1): toevoegen | toon

---

one publication added to basket [106297]

Shallow water hydrothermal vent field fluids and communities of the D. João de Castro Seamount (Azores) Cardigos, F.; Colaço, A.; Dando, P.R.; Ávila, S.P.; Sarradin, P.-M.; Tempera, F.; Conceição, P.; Pascoal, A.; Serrão Santos, R. (2005). Shallow water hydrothermal vent field fluids and communities of the D. João de Castro Seamount (Azores). Chem. Geol. 224(1-3): 153-168. http://dx.doi.org/10.1016/j.chemgeo.2005.07.019 In: Chemical Geology. Elsevier: New York; London; Amsterdam. ISSN 0009-2541; e-ISSN 1872-6836, meer

---

Beschikbaar in	Auteurs
VLIZ: Open access 113921 [ download pdf ]

---

Trefwoorden

Topographic features > Submarine features > Seamounts Water > Shallow water Water springs > Geothermal springs > Hydrothermal springs ANE, Azores [Marine Regions] Marien/Kust

Author keywords

D. Joao de Castro; Seamount; shallow hydrothermal vents; Azores

---

Auteurs		Top
Cardigos, F., meer Colaço, A., meer Dando, P.R., meer	Ávila, S.P. Sarradin, P.-M. Tempera, F.	Conceição, P. Pascoal, A. Serrão Santos, R.

---

Abstract

D. João de Castro seamount has an elevation of 1000 m and is located between the islands of Terceira and São Miguel, Azores, on the hyper-slow spreading Terceira Rift. The summit of the seamount shoals to 13 m below sea level and has hydrothermal vents at a depth of 20 m. This is the first vent system to be described on a hyperslow spreading centre. Gas discharging from the vents is dominated by CO2 (90%) with lesser H2S, H2 and CH4. Two distinct vent areas were identified that had different physical and chemical characteristics. The white area had vent orifices with white bacterial mats, while the yellow area had yellowish coloured vent openings. Vents in the white area had lower temperatures (≤ 43 °C), but higher concentrations of H2S, CH4 and H2. Beggiatoa sp. was found in this area. The yellow area had vent temperatures up to 63 °C. No typical hydrothermal vent fauna was found at these vents. The macro species present were similar to those found in coastal and seamount areas of the Azorean Archipelago. There was evidence for the presence of deeper vents on the flanks of the D. João de Castro seamount, at depths between 150-400 m.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.