| Naslov: | Turbulence observations in the Gulf of Trieste under moderate wind forcing and different water column stratification |
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| Avtorji: | ID Falcieri, Francesco Marcello (Avtor)
ID Kantha, Lakshmi (Avtor)
ID Benetazzo, Alvise (Avtor)
ID Bergamasco, Andrea (Avtor)
ID Bonaldo, Davide (Avtor)
ID Barbariol, Francesco (Avtor)
ID Malačič, Vlado (Avtor)
ID Sclavo, Mauro (Avtor)
ID Carniel, Sandro (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite http://www.ocean-sci.net/12/433/2016/
 PDF - Predstavitvena datoteka, prenos (2,99 MB)
MD5: A4E6BCC7E9FE6E4A41721D7DB166E6A2
URL - Izvorni URL, za dostop obiščite http://dx.doi.org/10.5194/os-12-433-2016
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  NIB - Nacionalni inštitut za biologijo
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| Povzetek: | The oceanographic campaign CARPET2014 (Characterizing Adriatic Region Preconditionig EvenTs), (30 January–4 February 2014) collected the very first turbulence data in the Gulf of Trieste (northern Adriatic Sea) under moderate wind (average wind speed 10 m s−1) and heat flux (net negative heat flux ranging from 150 to 400 W m−2). Observations consisted of 38 CTD (Conductivity, Temperature, Depth) casts and 478 microstructure profiles (grouped into 145 ensembles) with three sets of yoyo casts, each lasting for about 12 consecutive hours. Averaging closely repeated casts, such as the ensembles, can lead to a smearing effect when in the presence of a vertical density structure with strong interfaces that can move up or down between subsequent casts under the influence of tides and internal waves. In order to minimize the smearing effect of such displacements on mean quantities, we developed an algorithm to realign successive microstructure profiles to produce sharper and more meaningful mean profiles of measured turbulence parameters.
During the campaign, the water column in the gulf evolved from well-mixed to stratified conditions due to Adriatic waters intruding at the bottom along the gulf's south-eastern coast. We show that during the warm and relatively dry winter, the water column in the Gulf of Trieste, even under moderate wind forcing, was not completely mixed due to the influence of bottom waters intruding from the open sea. Inside the gulf, two types of water intrusions were found during yoyo casts: one coming from the northern coast of the Adriatic Sea (i.e. cooler, fresher and more turbid) and one coming from the open sea in front of the Po Delta (i.e. warmer, saltier and less turbid). The two intrusions had different impacts on turbulence kinetic energy dissipation rate profiles. The former, with high turbidity, acted as a barrier to wind-driven turbulence, while the latter, with low sediment concentrations and a smaller vertical density gradient, was not able to suppress downward penetration of turbulence from the surface. |
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| Ključne besede: | hydrology, oceanographic data, numerical modelling, wind forcing, turbulence |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 11.03.2016 |
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| Leto izida: | 2016 |
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| Št. strani: | str. 433-449 |
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| Številčenje: | Vol. 12 |
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| PID: | 20.500.12556/DiRROS-19995  |
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| UDK: | 556 |
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| ISSN pri članku: | 1812-0784 |
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| DOI: | 10.5194/os-12-433-2016 |
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| COBISS.SI-ID: | 3806543 |
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| Opomba: | Published by Copernicus Publ. by behalf of EGU;
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| Datum objave v DiRROS: | 01.08.2024 |
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| Število ogledov: | 346 |
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| Število prenosov: | 302 |
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| Metapodatki: |    |
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