Please use this identifier to cite or link to this item:
DC FieldValueLanguage
dc.contributor.authorSantana González, Carolinaen_US
dc.contributor.authorSantana Casiano, Juana Magdalenaen_US
dc.contributor.authorGonzález Dávila, Melchoren_US
dc.description.abstractThe Fe(II) is an essential micronutrient for the phytoplankton grow, and due to its low solubility in seawater it is found in the 0.2-2 nM range for the north Atlantic ocean. However the eruptive stage process and the subsequent hydrothermal stage occurred in the undersea volcano at the southeast of the El Hierro Island, Spain has risen the concentration of TFe(II) in the waters nearest to the main cone. Two cruises were carried out on March and October 2013, inside the VULCANO project, in order to detect any variation in concentrations of TFe(II) due to emissions after the eruptive process. Flow injection chemiluminescence using luminol as reagent was used to determine the concentrations of TFe(II). The results confirm an important positive anomalies in TFe(II) which coincide with negative anomalies in pH located in a secondary cone, during October cruise. It is also observed maximum values in TFe(II) at the surface associated to chlorophyll a maximum and to the sea bottom, showing the important influence of surface runoff, organic complexation and particle re-suspension processes. Temporal study in the station located over the secondary cone with positively anomalies in pH was carried out during 4 days. It showed an important variability in both pH and TFe(II) concentrations that indicated the volcanic area was affected by intermittent events of hydrothermal fluids in vent that remains in the volcano cone one and a half year after the eruptive phase has ceased. The increased TFe(II) concentrations and the low associated pH values may be acting as an important fertilization event in the seawater around the volcano at the Island of El Hierro providing optimal conditions for the regeneration of the area.en_US
dc.sourceBook of Abstracts submitted to the IV Congress of Marine Sciences. Las Palmas de Gran Canaria, June 11th to 13th 2014, p. 207en_US
dc.subject2510 Oceanografíaen_US
dc.subject251001 Oceanografía biológicaen_US
dc.subject251002 Oceanografía químicaen_US
dc.subject250621 Vulcanologíaen_US
dc.titleEmissions of Fe(II) due to the undersea volcano of El Hierroen_US
dc.relation.conferenceIV Congress of Marine Sciencesen_US
dc.type2Actas de congresosen_US
item.fulltextSin texto completo-
crisitem.event.eventsenddate13-06-2014- IOCAG: Química Marina- de Oceanografía y Cambio Global- de Química- IOCAG: Química Marina- de Oceanografía y Cambio Global- de Química- de Oceanografía y Cambio Global- de Oceanografía y Cambio Global- González, Carolina- Casiano, Juana Magdalena-ález Dávila, Melchor-
Appears in Collections:Actas de congresos
Show simple item record

Page view(s)

checked on Jun 4, 2022

Google ScholarTM




Export metadata

Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.