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Tank and field experiments of short-range acoustic propagation through a seagrass canopy

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dc.contributor.authorFelisberto, Paulo
dc.contributor.authorSilva, J. P.
dc.contributor.authorJesus, Sergio
dc.contributor.authorA.J. Silva
dc.contributor.authorSilva, A.T.
dc.contributor.authorSilva, J.
dc.contributor.authorSantos, R.
dc.contributor.authorFerreira, H.
dc.contributor.authorPousao, P.
dc.date.accessioned2020-07-24T10:53:03Z
dc.date.available2020-07-24T10:53:03Z
dc.date.issued2019
dc.description.abstractAiming at monitoring the bubbles released during seagrass photosynthesis in different conditions, three experiments were made: two in an outdoor tank and one in the field. The outdoor tank experiments were conducted in winter and summer conditions with Cymodocea nodosa plants transplanted from a nearby meadow. The field experiment took place in September 2018 on a Posidonia oceanica meadow, where bubbles formation due to plants photosynthesis has been reported. In all the experiments continuous wave pulses in the band 1020 kHz were used to estimate the diel change of effective sound speed and the attenuation over the plants. Additionally, high frequency backscatter images at 0.5, 1, 2 and 4 Mhz were obtained to figure out bubbles signature. The results suggest that even in winter, the tank conditions, without water movement, allows for the formation of a small amount bubbles of small radii. In summer tank conditions, the bubbles formation due to photosynthesis of seagrasses significantly increases, but also algae may contribute for the bubbles formation in the environment. The field experiment was carried out after the peak of a bad weather event. There was no evidence of bubbles formation, what can be related to water movement and leaves stirring, that prevents bubbles formation.
dc.description.sponsorshipFCT - Foundation for Science and TechnologyPortuguese Foundation for Science and Technology [PTDC/EEIPRO/2598/2014, UID/Multi/04326/2019]
dc.identifier.isbn978-0-578-57618-3
dc.identifier.issn0197-7385
dc.identifier.urihttp://hdl.handle.net/10400.1/14441
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIeee
dc.relation.ispartofseriesOceans-IEEE
dc.titleTank and field experiments of short-range acoustic propagation through a seagrass canopy
dc.typeconference object
dspace.entity.typePublication
oaire.citation.titleOceans 2019 MTS/IEEE Seattle
oaire.citation.titleMTS/IEEE Oceans Seattle Conference (Oceans Seattle)
oaire.citation.titleSeattle, WA
person.familyNameFelisberto
person.familyNameJesus
person.familyNameSilva
person.givenNamePaulo
person.givenNameSergio
person.givenNameAntónio
person.identifier79549
person.identifier.ciencia-idD411-CBA8-85B8
person.identifier.ciencia-idEB17-11D8-E7BD
person.identifier.orcid0000-0001-7542-4332
person.identifier.orcid0000-0002-6021-1761
person.identifier.orcid0000-0002-1724-7777
person.identifier.ridM-9474-2013
person.identifier.ridN-6554-2013
person.identifier.scopus-author-id6508039890
person.identifier.scopus-author-id7003729485
person.identifier.scopus-author-id55846463600
rcaap.rightsrestrictedAccess
rcaap.typeconferenceObject
relation.isAuthorOfPublication6574c278-a803-4dbe-9140-4cd8272027db
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublication564df7bf-2e6e-46bf-a80b-d37570d3b78d
relation.isAuthorOfPublication.latestForDiscovery564df7bf-2e6e-46bf-a80b-d37570d3b78d

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