{"id":1266,"date":"2017-02-14T21:08:05","date_gmt":"2017-02-14T21:08:05","guid":{"rendered":"https:\/\/wp.ull.es\/omacc\/?post_type=project&p=1266"},"modified":"2025-12-12T09:50:47","modified_gmt":"2025-12-12T09:50:47","slug":"emissions-of-feii-and-its-kinetic-of-oxidation-at-tagoro-submarine-volcano-el-hierro-santana-casiano-et-al-2017","status":"publish","type":"project","link":"https:\/\/wp.ull.es\/omacc\/project\/emissions-of-feii-and-its-kinetic-of-oxidation-at-tagoro-submarine-volcano-el-hierro-santana-casiano-et-al-2017\/","title":{"rendered":"Emissions of Fe(II) and its kinetic of oxidation at Tagoro submarine volcano, El Hierro. Santana-Casiano et al., 2017"},"content":{"rendered":"[et_pb_section fb_built=\u00bb1″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_row _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb header_2_font=\u00bb|700|||||||\u00bb]\n

Emissions of Fe(II) and its kinetic of oxidation at Tagoro submarine volcano, El Hierro<\/h2>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00bb2_5,3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb2_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_image src=\u00bbhttps:\/\/wp.ull.es\/omacc\/wp-content\/uploads\/sites\/110\/2023\/02\/2017-Santana-Gonza\u0301lez-et-al.-MarCHe.jpeg\u00bb title_text=\u00bb2017-Santana-Gonza\u0301lez et al. MarCHe\u00bb _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb border_width_all=\u00bb2px\u00bb border_color_all=\u00bb#0C997F\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00bb3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb]\n

2017. CAROLINA SANTANA-GONZ\u00c1LEZ, J. MAGDALENA SANTANA-CASIANO, MELCHOR GONZ\u00c1LEZ-D\u00c1VILA, EUGENIO FRAILE-NUEZ. Emissions of Fe(II) and its kinetic of oxidation at Tagoro submarine volcano, El Hierro. Marine Chemistry, 195, 129-137<\/span><\/p><\/blockquote>\n[\/et_pb_text][et_pb_text _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb]El proceso eruptivo que tuvo lugar en octubre de 2011 en el volc\u00e1n submarino Tagoro frente a la Isla de El Hierro y la posterior etapa de desgasificaci\u00f3n, cinco meses m\u00e1s tarde, han aumentado la concentraci\u00f3n de TdFe (II) (hierro disuelto total (II)) en las aguas m\u00e1s cercanas al edificio volc\u00e1nico. Par<\/span>a<\/span> detect<\/span>ar<\/span> c<\/span>ual<\/span>qu<\/span>ier<\/span> vari<\/span>aci<\/span>\u00f3n<\/span> en<\/span> las<\/span> concent<\/span>rac<\/span>ion<\/span>es<\/span> de<\/span> T<\/span>d<\/span>Fe<\/span>(<\/span>II<\/span>)<\/span> deb<\/span>ido<\/span> a<\/span> las<\/span> em<\/span>ision<\/span>es<\/span> hid<\/span>ro<\/span>term<\/span>ales<\/span>,<\/span> se<\/span> real<\/span>iz<\/span>aron<\/span> t<\/span>res<\/span> campa\u00f1as <\/span>dos<\/span> a<\/span>\u00f1<\/span>os<\/span> desp<\/span>u<\/span>\u00e9s<\/span> del<\/span> pro<\/span>ces<\/span>o<\/span> erupt<\/span>ivo<\/span> en<\/span> oct<\/span>ub<\/span>re<\/span> de<\/span> 2013<\/span>,<\/span> mar<\/span>zo<\/span> de<\/span> 2014<\/span> y<\/span> may<\/span>o<\/span> de<\/span> 2015<\/span>. Los resultados de estas campa\u00f1as confirmaron importantes anomal\u00edas positivas en TdFe(II), que coincidieron con anomal\u00edas negativas en pHF,is (pH en escala libre, en condiciones in situ) ubicadas en la proximidad del cono principal. Se observaron tambi\u00e9n valores m\u00e1ximos en TdFe(II) tanto en la superficie, asociado al m\u00e1ximo de clorofila a, como en el fondo marino, mostrando la importante influencia de los procesos de complejaci\u00f3n org\u00e1nica y re-suspensi\u00f3n de part\u00edculas. Se realizaron estudios de variabilidad temporal en periodos que van desde horas hasta d\u00edas en las estaciones ubicadas sobre los principales y dos conos secundarios del edificio volc\u00e1nico con anomal\u00edas positivas en las concentraciones de TdFe(II) y anomal\u00edas negativas en los valores de pHF,is. Las observaciones mostraron una importante variabilidad tanto en las concentraciones de pHF,is como en las de TdFe(II), lo que indic\u00f3 que la zona volc\u00e1nica estaba afectada por un proceso de desgasificaci\u00f3n que permaneci\u00f3 en el volc\u00e1n despu\u00e9s de que la fase eruptiva hubiera cesado. Estudios cin\u00e9ticos de oxidaci\u00f3n de Fe(II) tambi\u00e9n se llevaron a cabo para analizar los efectos de las propiedades del agua de mar en las proximidades del volc\u00e1n en las constantes de tasa de oxidaci\u00f3n y t1\/2 (tiempo de vida media) del hierro f\u00e9rrico. Las concentraciones aumentadas de TdFe(II) y los valores bajos de pHF,is actuaron como un importante evento de fertilizaci\u00f3n en el agua de mar alrededor del volc\u00e1n Tagoro en la Isla de El Hierro proporcionando condiciones \u00f3ptimas para la regeneraci\u00f3n de la zona.<\/span>
\n[\/et_pb_text][et_pb_button button_url=\u00bbhttps:\/\/www.sciencedirect.com\/science\/article\/pii\/S0304420316301542?casa_token=2xlAuZm0k_sAAAAA:V__6lTFnIfdKyxEhFB3VaA0wFJ2QnWFndxrj1vnq4nP_qN6I2aTKuSyx4OPWTXUDYRzwVSF-\u00bb url_new_window=\u00bbon\u00bb button_text=\u00bbDescargar pdf\u00bb _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb custom_button=\u00bbon\u00bb button_text_size=\u00bb13px\u00bb button_bg_color=\u00bb#0C997F\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00bb2_5,3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb2_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][\/et_pb_column][et_pb_column type=\u00bb3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_toggle title=\u00bbEnglish\u00bb open_toggle_text_color=\u00bb#0C997F\u00bb open_toggle_background_color=\u00bb#FFFFFF\u00bb closed_toggle_text_color=\u00bb#0C997F\u00bb closed_toggle_background_color=\u00bb#FFFFFF\u00bb icon_color=\u00bb#0C997F\u00bb _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb title_font=\u00bb|||on|||||\u00bb closed_title_font=\u00bb|||on|||||\u00bb closed_title_font_size=\u00bb14px\u00bb closed_title_line_height=\u00bb1.5em\u00bb custom_padding=\u00bb7px||7px||true|false\u00bb border_color_all=\u00bb#0C997F\u00bb]The eruptive process that took place in October 2011 in the submarine volcano Tagoro off the Island of El Hierro and the subsequent degasification stage, five months later, have increased the concentration of TdFe(II) (Total dissolved iron(II)) in the waters nearest to the volcanic edifice. In order to detect any variation in concentrations of TdFe(II) due to hydrothermal emissions, three cruises were carried out two years after the eruptive process in October 2013, March 2014 and May 2015. The results from these cruises confirmed important positive anomalies in TdFe(II), which coincided with negatives anomalies in pHF,is (pH in free scale, at in situ conditions) located in the proximity of the main cone. Maximum values in TdFe(II) both at the surface, associated to chlorophyll a maximum, and at the sea bottom, were also observed, showing the important influence of organic complexation and particle re-suspension processes. Temporal variability studies were carried out over periods ranging from hours to days in the stations located over the main and two secondary cones in the volcanic edifice with positive anomalies in TdFe(II) concentrations and negative anomalies in pHF,is values. Observations showed an important variability in both pHF,is and TdFe(II) concentrations, which indicated the volcanic area was affected by a degasification process that remained in the volcano after the eruptive phase had ceased. Fe(II) oxidation kinetic studies were also undertaken in order to analyze the effects of the seawater properties in the proximities of the volcano on the oxidation rate constants and t1\/2 (half-life time) of ferrous iron. The increased TdFe(II) concentrations and the low associated pHF,is values acted as an important fertilization event in the seawater around the Tagoro volcano at the Island of El Hierro providing optimal conditions for the regeneration of the area.
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[et_pb_section fb_built=\u00bb1″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_row _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb header_2_font=\u00bb|700|||||||\u00bb] Emissions of Fe(II) and its kinetic of oxidation at Tagoro submarine volcano, El Hierro [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00bb2_5,3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb2_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_image src=\u00bbhttps:\/\/wp.ull.es\/omacc\/wp-content\/uploads\/sites\/110\/2023\/02\/2017-Santana-Gonza\u0301lez-et-al.-MarCHe.jpeg\u00bb title_text=\u00bb2017-Santana-Gonza\u0301lez et al. MarCHe\u00bb _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb border_width_all=\u00bb2px\u00bb border_color_all=\u00bb#0C997F\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00bb3_5″ _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.9.7″ _module_preset=\u00bbdefault\u00bb] 2017. CAROLINA SANTANA-GONZ\u00c1LEZ, J. MAGDALENA SANTANA-CASIANO, MELCHOR GONZ\u00c1LEZ-D\u00c1VILA, […]<\/p>\n","protected":false},"author":268,"featured_media":1270,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","ngg_post_thumbnail":0,"footnotes":""},"project_category":[10],"project_tag":[],"class_list":["post-1266","project","type-project","status-publish","has-post-thumbnail","hentry","project_category-recientes"],"_links":{"self":[{"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project\/1266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project"}],"about":[{"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/types\/project"}],"author":[{"embeddable":true,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/users\/268"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/comments?post=1266"}],"version-history":[{"count":2,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project\/1266\/revisions"}],"predecessor-version":[{"id":1277,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project\/1266\/revisions\/1277"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/media\/1270"}],"wp:attachment":[{"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/media?parent=1266"}],"wp:term":[{"taxonomy":"project_category","embeddable":true,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project_category?post=1266"},{"taxonomy":"project_tag","embeddable":true,"href":"https:\/\/wp.ull.es\/omacc\/wp-json\/wp\/v2\/project_tag?post=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}