Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8386
DC Field | Value | Language |
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dc.contributor.authorall | Carniel, S.; CNR-ISMAR | en |
dc.contributor.authorall | Bergamasco, A.; CNR-ISMAR | en |
dc.contributor.authorall | Book, J. W.; NRL | en |
dc.contributor.authorall | Hobbs, R. W.; Univ. of Durham | en |
dc.contributor.authorall | Sclavo, M.; CNR-ISMAR | en |
dc.date.accessioned | 2012-11-12T14:20:31Z | en |
dc.date.available | 2012-11-12T14:20:31Z | en |
dc.date.issued | 2012 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8386 | en |
dc.description.abstract | We present the first results from the Seismic Oceanography (SO) cruise ADRIASEISMIC where we successfully imaged thermohaline fine structures in the shallow water environment (50-150 m) of the southern Adriatic Sea during March 2009 using a compact two GI-gun seismic source. The SO observations are complemented with traditional oceanographic and micro-structure measurements and show that SO can operate over almost the entire water column except (in our experimental layout) for the uppermost 50 m. After processing to enhance the signal-to-noise ratio, the seismic reflection data have a vertical resolution of ~10 m and a horizontal resolution of ~100 m and provide a laterally continuous map of significant thermohaline boundaries that cannot be achieved with conventional physical oceanography measurements alone. ADRIASEISMIC specifically targeted structures in shallow waters, namely along the western margin of the southern Adriatic Sea, between the Gargano peninsula and the Bari canyon, and imaged the Northern Adriatic Dense Water (NAdDW), a bounded cold and relatively dense water mass flowing from the northern Adriatic Sea. The seismic data acquired in Bari canyon and offshore of the Gargano promontory show many regions of strongly reflecting shallow structures, and the incorporation of XBTs measurements with these data demonstrate that they can be interpreted in terms of temperature structures and gradients. In the Gargano region several warm water intrusive structures are mapped along with the offshore transitional edge of cold waters of strong NAdDW influence. In Bari Canyon, waters with NAdDW influence are further mapped extending over the shelf and off the slope into a 5 km long tongue extending offshore between depths of 200-300 m. More generally, even though neither cascading nor open-ocean deep convection process appeared to be evident during March 2009, the SO approach was able to map details of thermal features not resolved by even closely spaced XBT measurements. | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier Science Limited | en |
dc.relation.ispartof | Continental shelf research | en |
dc.relation.ispartofseries | /44(2012) | en |
dc.subject | seismic oceanography | en |
dc.subject | Adriatic Sea | en |
dc.title | Tracking bottom waters in the Southern Adriatic Sea applying seismic oceanography techniques | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 30-38 | en |
dc.identifier.URL | http://www.journals.elsevier.com/continental-shelf-research | en |
dc.subject.INGV | 03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamics | en |
dc.identifier.doi | 10.1016/j.csr.2011.09.004 | en |
dc.relation.references | Bergamasco A., T. Oguz, P. Malanotte.Rizzoli, 1999. Modeling dense water mass formation and winter circulation in the Northern and Central Adriatic Sea. Journal of Marine Systems, 20 (1-4), 279-300. Book et al., 2010. A comparison study of North Adriatic Dense Water descent using observations in March, 2006 and March, 2009. Geophysical Research Abstracts, EGU General Assembly, Vol. 12, EGU2010-7766-2 Burrage D.M., J.W. Book and P.J. Martin, 2009. Eddies and filaments of the Western Adriatic Current near Cape Gargano: analysis and prediction. Journal of Marine Systems, 78, S205-S226. Carniel S., M. Sclavo, L.H. Kantha and H. Prandke, 2008. Double-diffusive layers in the Adriatic Sea. Geophys. Res. Lett., 35, L02605. DOI: 10.1029/2007GL032389. Carniel et al., 2010. Combining simultaneous seismic reflection and physical oceanographic observations of shelf-slope processes. Geophysical Research Abstracts, EGU General Assembly, Vol. 12, EGU2010-14267 Papenberg C., D. Klaeschen, G. Krahmann and R.W. Hobbs, 2010. Ocean temperature and salinità inverted from combined hydrographic and seismic data. Geophys. Res. Lett., 37, L04601, doi:10.1029/2009GL042115. Pàramo P. and W.S. Holbrook, 2005. Temperature contrasts in the water column inferred from amplitude-versus offset analysis of acoustic reflections. Geophys. Res. Lett., 32, L24611. Polton J., Hobbs R., Perratt O., Vlasenko V. and Inall M., 2011. Seismic Imaging, Modelling and Observation of the Wyville Thomson Ridge Dense Water Overflow. IUGG Melbourne 2011 P04 122 # 4035. Ruddick B., H. Song, C. Dong and L. Pinheiro, 2009. Water column seismic images as maps of temperature gradient. Oceanography, 22(1), 192–205. Sallarès V., B. Biescas, G. Buffett, R. Carbonell, J.J. Dañobeitia and J.L. Pelegrí, 2009. Relative contribution of temperature and salinity to ocean acoustic reflectivity. Geophys. Res. Lett., 36, L00D06, doi:10.1029/2009GL040187 Sheriff, R. E., 1980, Nomogram for Fresnel zone calculation: Geophysics, 45, 968–972. Sheriff R.E. and L.P. Geldart, 1995. Exploration Seismology, 2nd Ed., Cambridge Univ. Press. Taillandier V., A. Griffa, P.-M. Poulain, R.P. Signell, J. Chiggiato and S. Carniel, 2008. Variational analysis of drifter positions and model outputs for the reconstruction of surface currents in the Central Adriatic during fall 2002. Journal of Geophysical Research – Ocean, 113, C04004. DOI: 10.1029/2007JC004148 Tsuji T., T. Noguchi, H. Niino, T. Matsuoka, Y. Nakamura, H. Tokuyama, S. Kuramoto, and N. Bangs, 2005. Two-dimensional mapping of fine structures in the Kuroshio Current using seismic reflection data. Geophys. Res. Lett., 32, L14609, doi:10.1029/2005GL023095. Turchetto M., A. Boldrin, L. Langone, S. Miserocchi, T. Tesi and F. Foglini, 2007. Particle transport in the Bari Canyon (Southern Adriatic Sea). Marine Geology, 246(2-4), 231-247. Vilibic I. and N. Supic,2005. Dense water generation on a shelf: the case of the Adriatic Sea. Ocean Dynamics, 55 (5-6), 403-415. Wood W.T., W.S. Holbrook, M.K. Sen and P.L. Stoffa, 2008. Full wave form inversion of reflection seismic data for ocean temperature profiles. Geophys. Res. Lett., 35, L04608, doi:10.1029/2007GL032359. Wood W.T., D.A. Lindwall, J.W. Book, J. Wesson, S. Carniel and R.W. Hobbs, 2011. Seismic Oceanography – a new view of the ocean, in 2010 NRL Review, Naval Research Laboratory, 4555 Overlook Ave., SW, Washington, DC 20375-5320, pp. 113-121. | en |
dc.description.obiettivoSpecifico | 3.7. Dinamica del clima e dell'oceano | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0278-4343 | en |
dc.relation.eissn | 1873-6955 | en |
dc.contributor.author | Carniel, S. | en |
dc.contributor.author | Bergamasco, A. | en |
dc.contributor.author | Book, J. W. | en |
dc.contributor.author | Hobbs, R. W. | en |
dc.contributor.author | Sclavo, M. | en |
dc.contributor.department | CNR-ISMAR | en |
dc.contributor.department | CNR-ISMAR | en |
dc.contributor.department | NRL | en |
dc.contributor.department | Univ. of Durham | en |
dc.contributor.department | CNR-ISMAR | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | CNR-ISMAR | - |
crisitem.author.dept | NRL | - |
crisitem.author.dept | Univ. of Durham | - |
crisitem.author.orcid | 0000-0001-7987-1236 | - |
crisitem.classification.parent | 03. Hydrosphere | - |
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