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	Provedor de dados ArchiMer (2) Autor Barruol, Guilhem (2) Davy, Celine (2) Fontaine, Fabrice R. (2) Schlindwein, V. (1) Sigloch, K. (1) Sigloch, Karin (1) Stutzmann, Eleonore (1) Mais... Palavra-chave Microseismic noise (2) Cyclone (1) Hydroacoustic (1) Iles eparses (1) Indian Ocean (1) Major storms (1) Mozambique channel (1) Ocean bottom seismometers (OBS) (1) Rayleigh waves (1) Swell (1) Tropical storm (1) Mais... Tipo do documento Text (2) Ano 2016 (1) 2014 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Monitoring austral and cyclonic swells in the “Iles Eparses” (Mozambique channel) from microseismic noise ArchiMer Barruol, Guilhem; Davy, Celine; Fontaine, Fabrice R.; Schlindwein, V.; Sigloch, K.. We deployed five broadband three-components seismic stations in the Iles Eparses in the south-west Indian Ocean and on Mayotte Island, between April 2011 and January 2014. These small and remote oceanic islands suffer the effects of strong ocean swells that affect their coastal environments but most islands are not instrumented by wave gauges to characterize the swells. However, wave action on the coast causes high levels of ground vibrations in the solid earth, so-called microseismic noise. We use this link between the solid earth and ocean wave activity to quantify the swells locally. Spectral analyses of the continuous seismic data show clear peaks in the 0.05–0.10 Hz frequency band (periods between 10 and 20 s), corresponding to the ocean wave periods... Tipo: Text Palavras-chave: Microseismic noise; Swell; Tropical storm; Cyclone; Iles eparses; Mozambique channel. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00312/42291/41618.pdf Tracking major storms from microseismic and hydroacoustic observations on the seafloor ArchiMer Davy, Celine; Barruol, Guilhem; Fontaine, Fabrice R.; Sigloch, Karin; Stutzmann, Eleonore. Ocean wave activity excites seismic waves that propagate through the solid earth, known as microseismic noise. Here we use a network of 57 ocean bottom seismometers (OBS) deployed around La Réunion Island in the southwest Indian Ocean to investigate the noise generated in the secondary microseismic band as a tropical cyclone moved over the network. Spectral and polarization analyses show that microseisms strongly increase in the 0.1–0.35 Hz frequency band as the cyclone approaches and that this noise is composed of both compressional and surface waves, confirming theoretical predictions. We infer the location of maximum noise amplitude in space and time and show that it roughly coincides with the location of maximum ocean wave interactions. Although this... Tipo: Text Palavras-chave: Microseismic noise; Ocean bottom seismometers (OBS); Major storms; Indian Ocean; Hydroacoustic; Rayleigh waves. Ano: 2014 URL: https://archimer.ifremer.fr/doc/00287/39824/38331.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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