Consulta: subjectFacets:"Satellite sensing"
Registros recuperados: 13
Data/hora: 13/06/2024 13:24:49

Estimating turbidity and total suspended matter in the Adour River plume (South Bay of Biscay) using MODIS 250-m imagery
Provedor de dados: 5
Autores: Petus, Caroline; Chust, Guillem; Gohin, Francis; Doxaran, David; Froidefond, Jean-marie; Sagarminaga, Yolanda.
The Basque coastal waters (South Bay of Biscay) are directly influenced by the Adour River freshwater plume. The Adour outflow leads to important variations of suspended matter concentrations and turbidity, which in turn may affect biological productivity and water quality. This study aims at both developing specific algorithms and testing the efficiency of atmospherically corrected MODIS-Aqua 250-m surface reflectance product (MYD09) to map total suspended matter concentrations and turbidity within the Adour coastal region. First, regional empirical algorithms based on in-situ data were tested to retrieve the concentration of total suspended matter and turbidity from the remote sensing reflectance. Then, the respective sensitivity of MODIS surface...
Tipo: Text
Palavras-chave: Adour River plume; Turbidity; Suspended matter; Satellite sensing; MODIS; Remote sensing reflectance.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00003/11383/8042.pdf

Satellite and in situ observations of a late winter phytoplankton bloom, in the northern Bay of Biscay
Provedor de dados: 5
Autores: Gohin, Francis; Lampert, Luis; Guillaud, Jean-francois; Herbland, Alain; Nezan, Elisabeth.
A phytoplankton bloom was observed in late winter 2000, on the continental shelf offshore of southern Brittany, in northwestern Bay of Biscay. This bloom appeared initially along the 120-m isobath, in stratified and clear waters, at the interface between the oceanic water and the plumes of southern Brittany rivers (mainly the Loire and Vilaine). The development of the bloom was triggered by favourable meteorological conditions, characterised by solar irradiance reaching the maximum level expected for that period of the year. Outside of the bloom area, the phytoplankton photosynthesis was irradiance limited: inshore, because of the stronger attenuation of the light; offshore, because of the weak stratification. The hydrological conditions at the onset of...
Tipo: Text
Palavras-chave: Bay of Biscay; Coscinodiscus; Algal bloom; Phytoplankton; Ocean colour; Satellite sensing.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-463.pdf

Ciclo anual y variabilidad de baja frecuencia de la temperatura superficial del Mar en el Océano Atlántico Sudoccidental
Provedor de dados: 20
Autores: Martínez Avellaneda, N.
Se estudia el ciclo estacional y la variabilidad de baja frecuencia en el Oceano Atlantico SO, analizando 15 anos (ene.1985-dic. 1999)de observaciones satelitales de temperatura superficial del mar (TSM). Los campos de la TSM tienen una resolucion temporal de 2 dias y espacial de 18km y fueron derivados de observaciones del sensor Advanced Very High Resolution Radiometer de la National Oceanic and Atmospheric Administration (NOAA, EEUU). Se realizo un ajuste con una regresion de cuadrados minimos para los armonicos anual y semianual. Los ajustes para todos los puntos de grilla del area de estudio contabilizaron entre el 70. Y el 95 de la variabilidad de la TSM, dependiendo de la region. La amplitud estimada del ciclo estacional varia entre 5 degree C y...
Tipo: Theses and Dissertations
Palavras-chave: Annual variations; Continental shelves; Seasonal variations; Surface temperature; Satellite sensing; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2005
URL: http://hdl.handle.net/1834/2828

Vertical and horizontal movements of scalloped hamemerhead shark (Sphyrna lewini) around Malpelo  and Cocos islands (Tropical Eastern Pacific) using satellite telemetry
Provedor de dados: 20
Autores: Bessudo, Sandra; Soler, Germán A.; Klimley, Peter A.; Ketchum, James; Arauz, Randall; Hearn, Alex; Guzmán, Adriana; Calmettes, Beatriz.
Movimientos verticales y horizontales del tiburón martillo (Sphyrna lewini) alrededor de las islas Malpelo y Cocos (Pacífico Oriental Tropical) usando telemetría satelital. El conocimiento de los ámbitos de distribución y los patrones diarios de actividad de peces pelágicos son aspectos clave para el establecimiento y planificación de áreas protegidas para su conservación. En este estudio los movimientos verticales y horizontales de los tiburones martillo, Sphyrna lewini, fueron registrados utilizando telemetría satelital en las islas de Malpelo y Cocos, en el Pacífico Oriental Tropical. Nueve tiburones fueron marcados con transmisores satelitales en marzo de 2006, 2007 y 2008 en la isla Malpelo, y tres tiburones martillo fueron marcados en la isla de...
Tipo: Journal Contribution
Palavras-chave: Vertical distribution; Horizontal distribution; Marine fish; Satellite sensing; Sphyrna lewini.
Ano: 2011
URL: http://hdl.handle.net/1834/4422

Desarrollo de una metodología sencilla para la georreferenciación y medición de distancias a partir de imágenes de satélite sistemáticamente georreferenciadas
Provedor de dados: 20
Autores: Gónima, Leonardo; Ruíz, Libardo E.; González, Marcos E.
Uno de los principales problemas para una precisa georreferenciación y medición de distancias a partir de imágenes de satélite, especialmente en zonas geográficas con una gran dinámica morfológica y ambiental, reside no solamente en la dificultad para la identificación de puntos de control (GCPs, por su sigla en inglés), sino también en las limitaciones reales para el acceso a dichos lugares. En el presente trabajo se propone una metodología relativamente simple para la georreferenciación y la medición de distancias a partir de imágenes de satélite, basada en la utilización de imágenes de la reflectancia de la superficie previamente calculadas y luego orientadas hacia el norte (georreferenciación sistemática). A partir de estas imágenes y fijando un punto...
Tipo: Journal Contribution
Palavras-chave: Satellite sensing.
Ano: 2010
URL: http://hdl.handle.net/1834/3743

Metodologias de procesamiento de imagenes NOAA-AVHRR y su utilizacion en aplicaciones oceanograficas y biologico-pesqueras en el Atlantico sudoccidental.
Provedor de dados: 20
Autores: Bava, J.
The objective was to use the synoptic capability of NOAA-AVHRR images, and the physical variables inferred from them, in order to achieve spatial and temporal analysis that may allow correlating the satellite variables with oceanographic processes and biological or fishing data. Methodologies of image processing were developed to make possible the use of AVHRR information for the standardized and reliable generation of Sea Surface Temperature (SST) images (using bands 3 to 5 in the thermal infrared), and water reflectance images (using optic bands 1 and 2) as an index of surface turbidity in coastal zones. A methodology was also generated in order to obtain gradients images derived from SST images, which allows the identification of oceanographic fronts....
Tipo: Theses and Dissertations
Palavras-chave: Image processing; Satellite sensing; Surface temperature; Turbidity; Reflectance; Fishery resources; Oceanic fronts; Image processing; Turbidity; Fishery resources; Reflectance.
Ano: 2004
URL: http://hdl.handle.net/1834/1467

Shoreline detection using Terra SAR-x quad polarization mode
Provedor de dados: 20
Autores: Gurreonero Robinson, Diego; Bijker, Wietske; Tolpekin, Valentyn.
En los Países Bajos, la zona costera es un área dinámica a causa de la posición geográfica, los cambios naturales y humanos, por lo tanto, es necesaria para la detección costera exacta. Hasta ahora, mediciones del litoral se basan principalmente en la interpretación visual de imágenes y mediciones de campo. Esta investigación explora la posibilidades del nuevo modo de polarización quad del satelite TerraSAR-X.
Tipo: Other
Palavras-chave: Satellite sensing; Satellite imagery.
Ano: 2011
URL: http://hdl.handle.net/1834/5826

Estimaciones satelitales de clorofila y los frentes oceánicos del Atlántico Sudoccidental
Provedor de dados: 20
Autores: Romero, S.I.
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales (Argentina)
Tipo: Theses and Dissertations
Palavras-chave: Chlorophylls; Continental shelves; Shelf fronts; Estuarine front; Shelf edge fronts; Variability; Phytoplankton; Photosynthesis; Satellite sensing; Phytoplankton; Chlorophylls; Continental shelves; Photosynthesis; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_32413; Http://aims.fao.org/aos/agrovoc/c_5812.
Ano: 2008
URL: http://hdl.handle.net/1834/2827

Guide to satellite remote sensing of the marine environment
Provedor de dados: 20
Autores: IOC.
Tipo: Other
Palavras-chave: Oceanography; Remote sensing equipment; Remote sensing; Satellite sensing; Satellite photography; Marine environment; Marine environment; Remote sensing; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6498.
Ano: 1992
URL: http://hdl.handle.net/1834/2846

Metodologias de procesamiento de imagenes NOAA-AVHRR y su utilizacion en aplicaciones oceanograficas y biologico-pesqueras en el Atlantico sudoccidental.
Provedor de dados: 20
Autores: Bava, J.
The objective was to use the synoptic capability of NOAA-AVHRR images, and the physical variables inferred from them, in order to achieve spatial and temporal analysis that may allow correlating the satellite variables with oceanographic processes and biological or fishing data. Methodologies of image processing were developed to make possible the use of AVHRR information for the standardized and reliable generation of Sea Surface Temperature (SST) images (using bands 3 to 5 in the thermal infrared), and water reflectance images (using optic bands 1 and 2) as an index of surface turbidity in coastal zones. A methodology was also generated in order to obtain gradients images derived from SST images, which allows the identification of oceanographic fronts....
Tipo: Theses and Dissertations
Palavras-chave: Image processing; Satellite sensing; Surface temperature; Turbidity; Reflectance; Fishery resources; Oceanic fronts; Image processing; Turbidity; Fishery resources; Reflectance; Http://aims.fao.org/aos/agrovoc/c_37359; Http://aims.fao.org/aos/agrovoc/c_15043; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_28538.
Ano: 2004
URL: http://hdl.handle.net/1834/1467

Utilización de datos satelitarios en investigaciones oceanográficas y pesqueras en el océano Atlántico sudoccidental
Provedor de dados: 20
Autores: Podestá, G.
The use of satellite data in oceanographic and fishery studies in the SW Atlantic is reviewed. First, terms commonly used in the remote sensing literature are defined. The main satellite sensors used in oceanographic applications are described, and the principles of the remote estimation of two important variables, sea surface temperature(SST)and ocean color, are discussed. The use of remotely sensed data in oceanographic studies of the SW Atlantic is reviewed. Most studies are based on satellite SST fields and describe circulation in the open, particularly near the confluence of the Brazil and Malvinas currents. Due to the limited number of fishery studies based on satellite data in the SW Atlantic, examples from other parts of the world are reviewed....
Tipo: Book Section
Palavras-chave: Remote sensing; Satellite sensing; Oceanographic surveys; Fishery surveys; Fishery oceanography; Ocean circulation; Fishery oceanography; Remote sensing; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_6498.
Ano: 1997
URL: http://hdl.handle.net/1834/1724

Aspectos generales sobre la estructura térmica superficial del mar, de la zona comprendida entre el golfo de Penas y la boca occidental del estrecho de Magallanes
Provedor de dados: 20
Autores: Boré, D.; Barbieri, M.A.; Catasti, V.
This study was carried out within the Project Cimar-Fiordo 2. The general objective was to describe the sea surface temperature in the zone between 46º LS and 52º LS, and from the 73º 52’ LW to the 76º 30’ LW, considering the channel and fjord zone. The analysis was based on satellite images of sea surface temperature. The images used came from the AVHRR radiometer of the NOAA satellite, from the year 1995 to 1998.   The cartographic representation and the analysis of the seasonal variability of the sea surface temperature was made using the software of the Geographical Information System (GIS), named IDRISI. The zone was with clouds during all the period of study, mainly in autumn. With the available images it was possible to observe a big difference...
Tipo: Journal Contribution
Palavras-chave: Water temperature; Fjords; GIS; Satellite sensing; Radiometers; Surface temperature; Sea water; Thermal structure; Water temperature; Fjords; Radiometers; Sea water.
Ano: 2001
URL: http://hdl.handle.net/1834/1578

Avances en métodos y tecnología aplicados a la investigación pesquera. Seminario final del Proyecto INIDEP-JICA sobre evaluación y monitoreo de recursos pesqueros 1994-1999
Provedor de dados: 20
The Seminar organized by the Japan International Cooperation Agency (JICA) and the National Institute for Fisheries Research and Development (INIDEP) of Argentina, was held at INIDEP, Mar del Plata from September 6-9, 1999. The publication comprises expanded abstracts of each presentation, in four Theme Sessions: Reproduction and Survival, Age and Growth, Stock Identifcation and Resource Management Techniques and Relation between Oceanographic and Fishing Conditions. Presentations focused mainly on the following marine resources: squids Illex argentinus and Loligo sanpaulensis; and fish species southern blue whiting Micromesistius australis, patagonian hoki Macruronus magellanicus, kingklip Genypterus blacodes,  patagonian toothfish Dissostichus...
Tipo: Book
Palavras-chave: International cooperation; Research programmes; Fishery resources; Reproduction; Survival; Growth; Age determination; Fishery management; Population structure; Stock identification; Mesh selectivity; Satellite sensing.
Ano: 1999
URL: http://hdl.handle.net/1834/5510