Data/hora: 10/06/2024 14:05:28

Provedor de dados: | 5
País: | France
Título: | Application des thermographies de moyenne altitude et des images des satellites ERTS1, NOAA 2 et SKYLAB à la télédétection de l'hydrodynamique dans le Golfe du Lion
Autores: | Loubersac, Lionel.
Data: | 1974-09
Ano: | 1974
Resumo: | This report was drafted in the context of obtaining of the engineering degree of the National Engineering School on Water and Environment of Strasbourg (ENGEES eg. ENITRTS), and during the cycle of training in photo-interpretation of the graduate school of the Oil and Engines (ENSPM), Direction of Fuels, French Petroleum by benefiting from a training grant of the CNEXO. After a reminder, in first part, of the physical bases in Photometry and generalities on Radiometry, the second part is dedicated to the aerospace vectors and to the various sensors, in particular exploited within the framework of the study: the satellite ERTS1 and the sensor RBV, the space laboratory SKYLAB and its multispectral camera, the satellite NOOA2 and its sensors VHRR, finally the planes working on medium and high altitude and the sensors CYCLOPE and SUPERCYCLOPE. The third part exposes the methodologies of digital processing of files delivered by the used sensors: reading, digital decoding, organization of files, detection of the digital counts corresponding to the water, contrast enhancement, contours detection, neighborhood analyses… The fourth part is dedicated to the interpretations of photos and available thermal imaging as well as the files obtained from digital image processing. The study mainly targeted on the hydrodynamics of surface of the Gulf of Lions and on the existing relation between the appearance of a 'clear strip’ along the coast in period of strong North-West winds and the highlighting of coastal upwellings, the dilution of the turbid river plumes (the Rhône in particular) along the coast and littoral counter-currents in opposed direction to the East-West general circulation. These interpretations are got in touch with the general hydrological knowledge of this marine zone and in situ oceanographic observations which confirm the existence of these coastal upwellings. The complementarity between aerospace imaging and punctual oceanographic measures for oceanographic studies is pointed out.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/00189/30013/28494.pdf
Relação: | http://archimer.ifremer.fr/doc/00189/30013/
Formato: | application/pdf