| dc.contributor.author | Porter, M. B. | |
| dc.contributor.author | Jesus, S. M. | |
| dc.contributor.author | Stephan, Y. | |
| dc.contributor.author | Coelho, E. | |
| dc.contributor.author | Démoulin, X. | |
| dc.date.accessioned | 2014-10-13T16:20:47Z | |
| dc.date.available | 2014-10-13T16:20:47Z | |
| dc.date.issued | 1998 | |
| dc.description.abstract | Internal tides commonly occur along ocean coasts. They are internal waves driven by the usual tidal force and generated by scattering at a sharp bottom feature such as the shelf break. The internal tides are dramatic features with crests typically 10-30 km apart and wave heights of 20 m. On the ocean surface they cause only a gentle ripple about 10 cm high but they affect the shine of the surface. As a result, astronauts often see them as the tides propagate away from the shelf break. In June 1996, a shallow-water tomography experiment (INTIMATE 96) was conducted off the coast of Portugal to observe these internal tides and learn about their acoustic effects. A source was towed around a vertical hydrophone array to produce acoustic sections along several slices. The experiment also provided an ideal opportunity for testing model-based source tracking. Acoustic sections taken parallel to the Portuguese coast allowed us to understand the propagation physics in a range-independent area. With this we have been able to develop a matched-field algorithm suitable for use in the far more complicated downslope direction which, being perpendicular to the crests of the internal tides, also experiences strong ocean-temperature variations. We will discuss both the approach and the source tracking. | por |
| dc.description.sponsorship | ONR, New Jersey Institute of Technology, SCALANT Undersea research | por |
| dc.identifier.citation | M.B. PORTER, S.M. JESUS, Y. STEPHAN, E.F. COELHO, X. DEMOULIN, ``Single-hydrophone source tracking in a variable environment'' in Proceedings of the 4th European Conf. on Underwater Acoustics, pp 575-580, CNR-IDAC, Rome, Italy. | por |
| dc.identifier.other | AUT: SJE00662; | |
| dc.identifier.uri | http://hdl.handle.net/10400.1/5304 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | CNR-IDAC | por |
| dc.title | Single-hydrophone source tracking in a variable environment | por |
| dc.type | book part | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Roma | por |
| oaire.citation.endPage | 580 | por |
| oaire.citation.startPage | 575 | por |
| oaire.citation.title | 4th European Conf. on Underwater Acoustics | por |
| person.familyName | Jesus | |
| person.givenName | Sergio | |
| person.identifier.orcid | 0000-0002-6021-1761 | |
| person.identifier.scopus-author-id | 7003729485 | |
| rcaap.rights | openAccess | por |
| rcaap.type | bookPart | por |
| relation.isAuthorOfPublication | e0226ece-3767-4beb-ab80-868e8897c14a | |
| relation.isAuthorOfPublication.latestForDiscovery | e0226ece-3767-4beb-ab80-868e8897c14a |
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