Digital repository of Slovenian research organisations

Show document
A+ | A- | Help | SLO | ENG

Title:Turbulence observations in the Gulf of Trieste under moderate wind forcing and different water column stratification
Authors:ID Falcieri, Francesco Marcello (Author)
ID Kantha, Lakshmi (Author)
ID Benetazzo, Alvise (Author)
ID Bergamasco, Andrea (Author)
ID Bonaldo, Davide (Author)
ID Barbariol, Francesco (Author)
ID Malačič, Vlado (Author)
ID Sclavo, Mauro (Author)
ID Carniel, Sandro (Author)
Files:URL URL - Source URL, visit http://www.ocean-sci.net/12/433/2016/
 
.pdf PDF - Presentation file, download (2,99 MB)
MD5: A4E6BCC7E9FE6E4A41721D7DB166E6A2
 
URL URL - Source URL, visit http://dx.doi.org/10.5194/os-12-433-2016
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo NIB - National Institute of Biology
Abstract: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.
Keywords:hydrology, oceanographic data, numerical modelling, wind forcing, turbulence
Publication status:Published
Publication version:Version of Record
Publication date:11.03.2016
Year of publishing:2016
Number of pages:str. 433-449
Numbering:Vol. 12
PID:20.500.12556/DiRROS-19995 New window
UDC:556
ISSN on article:1812-0784
DOI:10.5194/os-12-433-2016 New window
COBISS.SI-ID:3806543 New window
Note:Published by Copernicus Publ. by behalf of EGU;
Publication date in DiRROS:01.08.2024
Views:478
Downloads:419
Metadata:XML DC-XML DC-RDF
:
FALCIERI, Francesco Marcello, KANTHA, Lakshmi, BENETAZZO, Alvise, BERGAMASCO, Andrea, BONALDO, Davide, BARBARIOL, Francesco, MALAČIČ, Vlado, SCLAVO, Mauro and CARNIEL, Sandro, 2016, Turbulence observations in the Gulf of Trieste under moderate wind forcing and different water column stratification. Ocean Science [online]. 2016. Vol. 12, p. 433–449. [Accessed 28 March 2025]. DOI 10.5194/os-12-433-2016. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=19995
Copy citation
  
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:Ocean Science
Shortened title:Ocean Sci.
Publisher:EGU
ISSN:1812-0784
COBISS.SI-ID:2813775 New window

Document is financed by a project

Funder:EC - European Commission
Project number:287844
Name:Towards COast to COast NETworks of marine protected areas ( from the shore to the high and deep sea), coupled with sea-based wind energy potential.
Acronym:COCONET
Funder:Other - Other funder or multiple funders
Funding programme:The Italian Research for the Sea – coordinated by the Italian National Research Council and funded by the Italian Ministry of Education, University and Research within the National Research Program 2011–2013
Name:Flagship Project RITMARE

Licences

License:CC BY 3.0, Creative Commons Attribution 3.0 Unported
Link:https://creativecommons.org/licenses/by/3.0/deed.en
Description:You are free to reproduce and redistribute the material in any medium or format. You are free to remix, transform, and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Secondary language

Language:Slovenian
Keywords:oceanografski podatki, numerično modeliranje, tokovanje, veterno polje, Jadransko morje


Back