Data/hora: 04/06/2024 01:10:31

Provedor de dados: | Ocean Docs: e-repository of  publications
País: | Belgium

Título:

Características oceangráficas químicas al este de las Islas Galápagos durante abril 1995

Oceanographic chemical characteristics on the east side of the Galápagos Islands during April 1995

Autores: | Pérez, E.; Chalén, N.; Macías, P.
Data: | 2009-04-20
Ano: | 1995
Palavras-chave: | Chemical composition; Oceanography; Upwelling; Oceanic islands; Chemical composition; Oceanography; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_12889.
Resumo: | During april 1995 hydrochemical research in a vertical column on the east side of the Galápagos Islands (Cruise T95/04/01) onboard of the INP R/V Tohallí indicated that concentrations of ammonium, nitrate, phosphate and chlorophyll-a were found stratified from the surface to deeper layers, on the other hand the maximum levels of nitrite and silicate were detected 70 m below the thermocline. The apparent oxygen use (AOU) varied from 1 to over 3 below the thermocline, this would indicate an oxidating environment due to the high levels of nitrate, phosphate, silicate and low concentrations of dissolved Oxygen (ca. 90-134[µM]) and ammonium (&lt;0,1[µM]). According to the high salinity average (35,0 ups), nutritive elements (nitrate 15,6 [µM], silicate 13,1 [µM]), phosphate 1,3 [µM]) and low average of chlorophyll-a 0,15 mg.m³, and in addition the general gradient of these parameters would suggest the presence of an upwelling event, whose nucleus presented low biological activity.
Tipo: | Journal Contribution
Idioma: | Espanhol

Identificador:

Boletín Científico y Técnico, 13(2). p. 52-62

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http://hdl.handle.net/1834/3021

Editor: | INP (Ecuador)