Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1056
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dc.contributor.authorallFuda, J. L.; Laboratoire d'Océanographie et de Biogéochimie, Antenne LOB, BP 330, F-83507 La Seyne/mer,en
dc.contributor.authorallMillot, C.; Laboratoire d'Océanographie et de Biogéochimie, Antenne LOB, BP 330, F-83507 La Seyne/mer,en
dc.contributor.authorallHoog, S.; Technical University of Berlin, Salzufer 17-19, Sekr. SG17, D-10587 Berlinen
dc.contributor.authorallGerber, H.; TFH Berlin - University of Applied Sciences, FB VIII, Luxemburger Str. 10, D- 13357 Berlinen
dc.date.accessioned2006-03-22T17:29:48Zen
dc.date.available2006-03-22T17:29:48Zen
dc.date.issued2006-03-20en
dc.identifier.urihttp://hdl.handle.net/2122/1056en
dc.description.abstractA 300-kHz ADCP was set on GEOSTAR, a six-m3 deep-sea observatory. It was operated with cells of 80 cm during a three-week test experiment at 42-m water depth in the northern Adriatic sub-basin. Although it provided valuable data about the horizontal current field over most of the water column, it also allowed specifying the wake disturbances induced by the observatory. These disturbances are characterised by vertical velocities that are significant up to ~20 m above seafloor (echo intensity data suggest that the wake can even reach the surface), and by inclinations of the bottom nepheloïd layer (as deduced from differences in echo intensities from beam to beam). Our analysis is validated by consistent relationships between the horizontal current direction and speed on one side and the characteristics of both dynamical (vertical velocity) and non-dynamical (echo intensity) parameters on the other side. It is in good agreement with the simulations from a numerical model, and hence specifies the sensitivity (especially with respect to echo intensity) and accuracy of an instrument usually operated within fields of current and scatterers not disturbed by the device supporting it. In addition, the error velocity parameter displays specific characteristics that easily allow specifying the thickness of the layer disturbed by the observatory, thus providing a technique to validate the quality of data acquired in similar conditions.en
dc.format.extent4784480 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.relation.ispartofAnnals of geophysicen
dc.relation.ispartofseries2-3/49(2006)en
dc.subjectADCP sensitivityen
dc.subjectcurrent lines inclinationen
dc.subjectobservatory’s wakeen
dc.titleAnalysis of ADCP data above a bottom observatoryen
dc.typearticleen
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methodsen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniquesen
dc.relation.referencesBeranzoli, L., T. Braun, M. Calcara, D. Calore, R. Campaci, J.M. Coudeville, A. De Santis, G. Etiope, P. Favali, F. Frugoni, J.L. Fuda, F. Gamberi, F. Gasparoni, H. Gerber, M. Marani, J. Marvaldi, C. Millot, P. Palongio, G. Romeo and G. Smriglio (2000): European Seafloor Observatory offers new possibilities for deep-sea study. EOS, 81, 5, 45-49. Fluent (2000): CFD Software, online Manuals. Fluent Germany GmbH, Darmstadt. Gordon, R.L., (1996): Acoustic Doppler Current Profilers. Principles of operation: a practical primer. Second edition for broadband ADCPs. RD Instruments publication. Krauss, W., (1973): Methods and results of theoretical oceanography. Part I: Dynamics of the homogeneous and the quasihomogeneous ocean. Gebrüder Bortraeger, Berlin, 302 p. Lu, Y., and Lueck, R.G., (1999): Using a broadband ADCP in a tidal channel. Part I: Mean flow and shear. J. Atmosph. and Ocean. Tec., 16, 11, 1556-1567. Orlic, M., M. Gacic and P. La Violette (1992) : The currents and circulation of the Adriatic Sea. Oceanol. Acta, 15, 2, 109-124. RDI Technical Booklet (1998): ADCP coordinate transformation; formulas and calculations. RD Instruments P/N 951-6079-00. Van Haren, H., N. Oakey and C. Garrett (1994): Measurements of internal wave band eddy fluxes above a sloping bottom. J. Mar. Res., 52, 909-946.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorFuda, J. L.en
dc.contributor.authorMillot, C.en
dc.contributor.authorHoog, S.en
dc.contributor.authorGerber, H.en
dc.contributor.departmentLaboratoire d'Océanographie et de Biogéochimie, Antenne LOB, BP 330, F-83507 La Seyne/mer,en
dc.contributor.departmentLaboratoire d'Océanographie et de Biogéochimie, Antenne LOB, BP 330, F-83507 La Seyne/mer,en
dc.contributor.departmentTechnical University of Berlin, Salzufer 17-19, Sekr. SG17, D-10587 Berlinen
dc.contributor.departmentTFH Berlin - University of Applied Sciences, FB VIII, Luxemburger Str. 10, D- 13357 Berlinen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptCOM, Centre d'Océanologie de Marseille, CNRS, Marseille, France-
crisitem.author.deptLOB-CNRS Marselle-
crisitem.author.deptTechnical University of Berlin, Salzufer 17-19, Sekr. SG17, D-10587 Berlin-
crisitem.author.deptTFH Berlin – University of Applied Sciences, Berlin, Germany-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
Appears in Collections:Annals of Geophysics
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