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Application of Hilbert-Huang decomposition to temperature and currents data in the Réunion island ArchiMer
Kbaier-ben Ismail, Dhouha; Lazure, Pascal; Puillat Felix, Ingrid.
In marine sciences, time series are often nonlinear and nonstationary. Their analysis faces new challenges and thus requires the implementation of adequate and specific methods. We use the Hilbert-Huang Transform (HHT) for the spectral analysis of high frequency sampled time series in near shore waters of the Réunion island, located in the Indian Ocean 700 km east of Madagascar. We focus particularly on automatic measurements of sea level fluctuations, temperature records and current data sets at four different stations in the island. We look at the contribution of different Intrinsic Mode Functions (IMFs) obtained by the Empirical Mode Decomposition (EMD) and also compare the Hilbert spectra with the wavelet spectra. The inertial wave and several...
Tipo: Text Palavras-chave: Cross correlation; Empirical mode decomposition (EMD); Hilbert spectral analysis (HSA); Hilbert-Huang transform (HHT); Stationarity; Time-dependent intrinsic correlation (TDIC); Time series; Wavelets.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00383/49392/49822.pdf
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JERICO-NEXT. Approaches to monitor European coastal seas ArchiMer
Durand, Dominique; Puillat Felix, Ingrid; Karlson, Bengt; Grémare, Antoine; Nizzetto, Luca; Rubio, Anna; Laakso, L; Mourre, Baptiste.
The objectives of JERICO-NEXT are to address the challenge of observing the complexity and high variability of coastal areas at Pan-European level, in the framework established by European Directives (WFD, MSFD) and the operational marine services. The JERICO-NEXT project aims at extending the EU network of coastal observations developed in JERICO (FP7) by adding new innovative infrastructures while integrating biogeochemical and biological observations. The main target of JERICO-NEXT is to provide the researchers with continuous and more valuable coastal data coupling physical and biological information. The JERICO research infrastructure (JERICO-RI) is valorised through six Joint Research Activity Projects (JRAP) that address key environment challenges...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00382/49331/49723.pdf
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JERICO-NEXT. Progress Report #1 ArchiMer
Puillat Felix, Ingrid; Karlson, Bengt; Artigas, Felipe; Grémare, Antoine; Nizzetto, Lucas; Rubio, Anna; Laakso, Lauri; Seppala, Jukka; Mourre, Baptiste.
The WP4 of the JERICO-Next is a synthesis of the project built upon activities in other WPs, gathering the consortium around applied Joint Research Activity Projects (JRAPs) selected to put forward the added value of JERICO-NEXT. In order to reach this objective, WP4 keeps on track the JERICO-NEXT course of actions via synthesis and application activities based on interactions with other WPs. WP4 helps establishing some topical approaches for the scientific strategy in WP1 (task 1.2) and will give inputs to establish the network strategy after JERICO-NEXT (task 1.6). Indeed, six JRAPs will be implemented to address different key environmental questions and/or policy requirements such as those considered by the MSFD, and according to the 6 JERICO scientific...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00382/49333/49719.pdf
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JERICO-NEXT. Progress Report #2 ArchiMer
Puillat Felix, Ingrid; Karlson, Bengt; Artigas, Luis Felipe; Grémare, Antoine; Nizzetto, Luca; Rubio, Anna; Laakso, Lauri; Seppala, Jukka; Mourre, Baptiste.
The WP4 of the JERICO-Next is a synthesis of the project built upon activities in other WPs, gathering the consortium around applied Joint Research Activity Projects (JRAPs) selected to put forward the added value of JERICO-NEXT. In order to reach this objective, WP4 keeps on track the JERICO-NEXT course of actions via synthesis and application activities based on interactions with other WPs. WP4 helps establishing some topical approaches for the scientific strategy in WP1 (task 1.2) and will give inputs to establish the network strategy after JERICO-NEXT (task 1.6). Indeed, six JRAPs are being implemented to address different key environmental questions and/or policy requirements such as those considered by the MSFD, and according to the 6 JERICO...
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Ano: 2017 URL: http://archimer.ifremer.fr/doc/00406/51702/52267.pdf
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JERICO-NEXT. Review of monitoring of environmental threats and pressures in Europe ArchiMer
Painting, Suzanne; Collingridge, Kate; Durand, Dominique; Grémare, Antoine; Bernard, Guillaume; Puillat Felix, Ingrid.
The objectives of JERICO-NEXT are to address the challenge of observing the complexity and high variability of coastal areas at Pan-European level, within the context of the EU Water Framework Directive and Marine Strategy Framework Directive, and operational marine services. The JERICO-NEXT project aims to extend the EU network of coastal observations developed in FP7-JERICO by adding new innovative infrastructures while integrating biogeochemical and biological observations. An important target of JERICO-NEXT is to provide the research community with continuous and more valuable coastal data coupling physical and biological information. The ultimate objectives are to maximise the value and impact of the JERICO research infrastructure (JERICO-RI) and...
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Ano: 2017 URL: http://archimer.ifremer.fr/doc/00382/49335/49720.pdf
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Time variability on hydrology and biogeochemistry induced by mesoscale eddies in the Algerian Basin: a one year high resolution and multiplatform experiment ArchiMer
Puillat Felix, Ingrid; Taupier-letage, Isabelle; Fuda, Jean-luc.
In the framework of the ELISA project (1997-1998, MAST-3/MTP/MATER program) 1-year high frequency time series were acquired at fixed points in the Algerian Basin, an open sea area of the Mediterranean sea (3000m). This multidisciplinary and multiplatform experiment was dedicated to study the algerian eddies and their influence on general circulation and on biological phenomena. During 3 main cruises, 2 specific  Anticyclonic Eddies (AEs) tracked by satellites images during 4 years were mainly studied by mean of vertical sections, performed inside AEs and in the surrounding smaller structures such as sub-mesoscale filaments and small-scale shear eddies. These sections helped describing the hydrological and biogeocheminal structures of eddies according to...
Tipo: Text
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00382/49336/49721.pdf
Registros recuperados: 6
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