Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station
For more than ten years, the CARIACO Time-Series Program has studied seasonal patterns and interannual variability at the Cariaco Basin. Monthly core physical and biogeochemical observations have been collected since November 1995 at the CARIACO Time-Series station (10º 30' N, 64º 40' W)....
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| Lenguaje: | English |
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Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
2006
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oai:scielo:S0717-653820060003000022007-10-30Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series stationYrene M,AstorScranton,MaryGuzmán,LaurenciaThunell,RobertMuller-Karger,FrankTaylor,GordonFanning,KentVarela,Ramón Oxic-anoxic interface ventilation Cariaco basin intrusions For more than ten years, the CARIACO Time-Series Program has studied seasonal patterns and interannual variability at the Cariaco Basin. Monthly core physical and biogeochemical observations have been collected since November 1995 at the CARIACO Time-Series station (10º 30' N, 64º 40' W). A region with suboxic conditions (oxygen and sulfide concentrations <1 µM) is found at intermediate waters at the station. The characteristics of this region show time and space variability, depending on the dynamics of the water. In general, ammonium, nitrate and nitrite disappeared within the suboxic region, although there is a steep ammonium concentration increase with depth after the oxic-anoxic interface suggesting its consumption at this boundary. Our data shows that intrusions are a major factor in affecting the chemical characteristics of the water column.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.70 suppl.1 20062006-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000300002en10.4067/S0717-65382006000300002 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Oxic-anoxic interface ventilation Cariaco basin intrusions |
| spellingShingle |
Oxic-anoxic interface ventilation Cariaco basin intrusions Yrene M,Astor Scranton,Mary Guzmán,Laurencia Thunell,Robert Muller-Karger,Frank Taylor,Gordon Fanning,Kent Varela,Ramón Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| description |
For more than ten years, the CARIACO Time-Series Program has studied seasonal patterns and interannual variability at the Cariaco Basin. Monthly core physical and biogeochemical observations have been collected since November 1995 at the CARIACO Time-Series station (10º 30' N, 64º 40' W). A region with suboxic conditions (oxygen and sulfide concentrations <1 µM) is found at intermediate waters at the station. The characteristics of this region show time and space variability, depending on the dynamics of the water. In general, ammonium, nitrate and nitrite disappeared within the suboxic region, although there is a steep ammonium concentration increase with depth after the oxic-anoxic interface suggesting its consumption at this boundary. Our data shows that intrusions are a major factor in affecting the chemical characteristics of the water column. |
| author |
Yrene M,Astor Scranton,Mary Guzmán,Laurencia Thunell,Robert Muller-Karger,Frank Taylor,Gordon Fanning,Kent Varela,Ramón |
| author_facet |
Yrene M,Astor Scranton,Mary Guzmán,Laurencia Thunell,Robert Muller-Karger,Frank Taylor,Gordon Fanning,Kent Varela,Ramón |
| author_sort |
Yrene M,Astor |
| title |
Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| title_short |
Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| title_full |
Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| title_fullStr |
Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| title_full_unstemmed |
Seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| title_sort |
seasonal variability in the hydrological and chemical structure of the suboxic waters at the cariaco time-series station |
| publisher |
Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción |
| publishDate |
2006 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000300002 |
| work_keys_str_mv |
AT yrenemastor seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT scrantonmary seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT guzmanlaurencia seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT thunellrobert seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT mullerkargerfrank seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT taylorgordon seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT fanningkent seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation AT varelaramon seasonalvariabilityinthehydrologicalandchemicalstructureofthesuboxicwatersatthecariacotimeseriesstation |
| _version_ |
1718442108444999680 |