Chlorophyll-a MODIS mesoscale variability in the Inner Sea of Chiloe, Patagonia, Chile (41-43 degrees S): Patches and Gradients?

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dc.contributor.authorLara, Carlos
dc.contributor.authorMiranda, Marcelo
dc.contributor.authorMontecino, Vivian
dc.contributor.authorLuis Iriarte, Jose
dc.date.accessioned2024-01-10T13:46:47Z
dc.date.available2024-01-10T13:46:47Z
dc.date.issued2010
dc.description.abstractSatellite images are powerful tools to describe meso-and large-scale spatial structures, thus helping in the comprehension of the physical-biological processes taking place in the ocean. The objective of this study was to establish spatial (horizontal) and temporal (seasonal) variability of the autotrophic biomass measured as satellite chlorophyll concentrations (Chl-a) in the Inner Sea of Chiloe (41.0-43.5 degrees S). Remote sensing (MODIS) and geostatistics (Variograms) approaches were used to characterize Chl-a spatial-horizontal structure at the surface layer by anisotropic estimation of the Chl-a average values. A total of 27 selected images were analyzed and grouped into summer, spring, fall and winter seasons during the January 2003-December 2005 period. Image temporal analysis showed a classic pattern for the autotrophic biomass dynamics of cold temperate coastal areas, with highest Chl-a values occurring during the spring-summer period, and the lowest values during the fall-winter season. Image spatial analysis indicated that Chl-a is distributed into more homogeneous and larger than 50 km patches, during the fall-winter seasons, whereas during the spring-summer seasons more heterogeneous and smaller than 30 km patches were found. The anisotropy analysis showed a predominant angle in the East-West direction, suggesting the role of water column stratification as a modulating process of surface Chl-a spatial variability in the Inner Sea of Chiloe area.
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.eissn0718-1957
dc.identifier.issn0717-3326
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79200
dc.identifier.wosidWOS:000281186300003
dc.information.autorucAgronomía e Ing. Forestal;Lara C;S/I;199394
dc.information.autorucAgronomía e Ing. Forestal;Miranda M;S/I;1001045
dc.issue.numero2
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final225
dc.pagina.inicio217
dc.publisherUNIV VALPARAISO
dc.revistaREVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
dc.rightsregistro bibliográfico
dc.subjectSpatial anisotropy
dc.subjectvariograms
dc.subjectphytoplankton chlorophyll
dc.subjectPatagonian fjords
dc.subjectOCEANOGRAPHIC CONDITIONS
dc.subjectSPATIAL HETEROGENEITY
dc.subjectSURFACE WATERS
dc.subjectPHYTOPLANKTON
dc.subjectCOASTAL
dc.subjectPRODUCTIVITY
dc.subjectPATCHINESS
dc.subjectBIOMASS
dc.subjectWINTER
dc.subjectBAY
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleChlorophyll-a MODIS mesoscale variability in the Inner Sea of Chiloe, Patagonia, Chile (41-43 degrees S): Patches and Gradients?
dc.typeartículo
dc.volumen45
sipa.codpersvinculados199394
sipa.codpersvinculados1001045
sipa.indexWOS
sipa.indexScielo
sipa.trazabilidadCarga SIPA;09-01-2024
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