OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA

Ten-days sea level anomalies (SLA) charts, based on the TOPEX/Poseidon (T/P) altimetry data for 1992-2003, as well as corresponding charts of sea surface dynamic heights (constructed by the superposition of SLA distributions over the climatic dynamic topography calculated from mean temperature and s...

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Autores principales:	Sirota,A.M., Lebedev,S.A., Kostianoy,A.G.
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2004
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300040
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spelling	oai:scielo:S0717-653820040003000402005-05-16OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATASirota,A.M.Lebedev,S.A.Kostianoy,A.G.Ten-days sea level anomalies (SLA) charts, based on the TOPEX/Poseidon (T/P) altimetry data for 1992-2003, as well as corresponding charts of sea surface dynamic heights (constructed by the superposition of SLA distributions over the climatic dynamic topography calculated from mean temperature and salinity data of WOA-1998 Atlas relative to 1000 m depth), were used to study main oceanic currents in the region 45-20°S, 110-70°W. Totally 377 T/P cycles for the period between 23 September 1992 and 25 February 2003 have been used for the analysis. Spatial and seasonal variability of the South Pacific Current has been investigated basing on the charts of dynamic heights gradients. The analysis allowed to distinguish zones with different degree of the current position variability, being minimal at 99°W where the current is most intense. Westward of 105°W the South Pacific Current may have bimodal structure and r.m.s. of its position may reach 3° of latitude. This is accompanied by a pronounced 35 T/P cycles peak (350 days) in its temporal variability. Eastward of 105°W there is no predominance in temporal variability of the currentinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.68 n.2 suppl.TIIProc 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300040en10.4067/S0717-65382004000300040
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Ten-days sea level anomalies (SLA) charts, based on the TOPEX/Poseidon (T/P) altimetry data for 1992-2003, as well as corresponding charts of sea surface dynamic heights (constructed by the superposition of SLA distributions over the climatic dynamic topography calculated from mean temperature and salinity data of WOA-1998 Atlas relative to 1000 m depth), were used to study main oceanic currents in the region 45-20°S, 110-70°W. Totally 377 T/P cycles for the period between 23 September 1992 and 25 February 2003 have been used for the analysis. Spatial and seasonal variability of the South Pacific Current has been investigated basing on the charts of dynamic heights gradients. The analysis allowed to distinguish zones with different degree of the current position variability, being minimal at 99°W where the current is most intense. Westward of 105°W the South Pacific Current may have bimodal structure and r.m.s. of its position may reach 3° of latitude. This is accompanied by a pronounced 35 T/P cycles peak (350 days) in its temporal variability. Eastward of 105°W there is no predominance in temporal variability of the current
author	Sirota,A.M. Lebedev,S.A. Kostianoy,A.G.
spellingShingle	Sirota,A.M. Lebedev,S.A. Kostianoy,A.G. OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
author_facet	Sirota,A.M. Lebedev,S.A. Kostianoy,A.G.
author_sort	Sirota,A.M.
title	OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
title_short	OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
title_full	OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
title_fullStr	OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
title_full_unstemmed	OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA
title_sort	oceanic currents in the southeastern oacific ocean as revealed by satellite altimetry data
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300040
work_keys_str_mv	AT sirotaam oceaniccurrentsinthesoutheasternoacificoceanasrevealedbysatellitealtimetrydata AT lebedevsa oceaniccurrentsinthesoutheasternoacificoceanasrevealedbysatellitealtimetrydata AT kostianoyag oceaniccurrentsinthesoutheasternoacificoceanasrevealedbysatellitealtimetrydata
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OCEANIC CURRENTS IN THE SOUTHEASTERN OACIFIC OCEAN AS REVEALED BY SATELLITE ALTIMETRY DATA

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