ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST

ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST

Between December 2001 and February 2002, NOAA-AVHRR images were obtained twice a day for the region between 30-40S and 70-80W. Within the cloud free areas, sea surface temperature was calculated according to standard split window algorithms. The geo-referenced horizontal resolution for each SST-pixe...

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Autores principales: Navarro,Eduardo, Schneider,Wolfgang, Letelier,Jaime
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=S0717-65382004000300020
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spelling oai:scielo:S0717-653820040003000202005-05-16ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SSTNavarro,EduardoSchneider,WolfgangLetelier,JaimeBetween December 2001 and February 2002, NOAA-AVHRR images were obtained twice a day for the region between 30-40S and 70-80W. Within the cloud free areas, sea surface temperature was calculated according to standard split window algorithms. The geo-referenced horizontal resolution for each SST-pixel resulted in 2 km, in east-west and north-south direction. All pairs of images were analyzed with respect to advective surface velocity by means of Maximum Cross-Correlation. Maximum Cross-Correlations exceeding the predetermined significance level of cross correlation were accepted. From all pairs of comparison monthly advective velocity maps (and SST maps) were constructed and separated in a coastal and offshore band. Coastal upwelling was observed along the coast of central Chile in all three months via the SST maps. Onshore-offshore transports were towards the west in December, rotated northwest in January and towards the north in February. These results are explained by an increased advection of suptropical surface water towards the coast in January and Februaryinfo: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=S0717-65382004000300020en10.4067/S0717-65382004000300020
institution Scielo Chile
collection Scielo Chile
language English
description Between December 2001 and February 2002, NOAA-AVHRR images were obtained twice a day for the region between 30-40S and 70-80W. Within the cloud free areas, sea surface temperature was calculated according to standard split window algorithms. The geo-referenced horizontal resolution for each SST-pixel resulted in 2 km, in east-west and north-south direction. All pairs of images were analyzed with respect to advective surface velocity by means of Maximum Cross-Correlation. Maximum Cross-Correlations exceeding the predetermined significance level of cross correlation were accepted. From all pairs of comparison monthly advective velocity maps (and SST maps) were constructed and separated in a coastal and offshore band. Coastal upwelling was observed along the coast of central Chile in all three months via the SST maps. Onshore-offshore transports were towards the west in December, rotated northwest in January and towards the north in February. These results are explained by an increased advection of suptropical surface water towards the coast in January and February
author Navarro,Eduardo
Schneider,Wolfgang
Letelier,Jaime
spellingShingle Navarro,Eduardo
Schneider,Wolfgang
Letelier,Jaime
ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
author_facet Navarro,Eduardo
Schneider,Wolfgang
Letelier,Jaime
author_sort Navarro,Eduardo
title ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
title_short ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
title_full ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
title_fullStr ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
title_full_unstemmed ESTIMATION OF ONSHORE-OFFSHORE TRASPORT OFF CENTRAL CHILE BY MEANS OF MAXIMUN CROSS-CORRELATION USING SATELLITE DERIVED SST
title_sort estimation of onshore-offshore trasport off central chile by means of maximun cross-correlation using satellite derived sst
publisher Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate 2004
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300020
work_keys_str_mv AT navarroeduardo estimationofonshoreoffshoretrasportoffcentralchilebymeansofmaximuncrosscorrelationusingsatellitederivedsst
AT schneiderwolfgang estimationofonshoreoffshoretrasportoffcentralchilebymeansofmaximuncrosscorrelationusingsatellitederivedsst
AT letelierjaime estimationofonshoreoffshoretrasportoffcentralchilebymeansofmaximuncrosscorrelationusingsatellitederivedsst
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