Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1029/2004JC002422 (literal)

Alternative label

• Doglioli, Andrea M. (1); Griffa, Annalisa (2,3); Magaldi, Marcello G. (3) (2004)
  Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino
  in Journal of geophysical research; American Geophysical Union, Washington (Stati Uniti d'America)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Doglioli, Andrea M. (1); Griffa, Annalisa (2,3); Magaldi, Marcello G. (3) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• Article number: C12033 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.agu.org/pubs/crossref/2004/2004JC002422.shtml (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 109 (literal)

Rivista

• Journal of geophysical research (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 19 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• C12 (literal)

Note

• Google Scholar (literal)
• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• (1) Istituto Nazionale per la Fisica della Materia-Dipartimento di Fisica (INFM-DIFI), Università di Genova, Genoa, Italy; (2) Consiglio Nazionale delle Ricerche, ISMAR, Sezione di Oceanografia Fisica, La Spezia, Italy; (3) Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, MPO, Miami, FL 33149 USA (literal)

Titolo

• Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino (literal)

Abstract

• A process study aimed at investigating the winter circulation in the area of the Promontorio of Portofino (northwestern Mediterranean) is presented, motivated by historical current measurements suggesting the presence of an attached recirculating eddy in the lee of the Promontorio (cape). A sensitivity study is first performed in an idealized setting, considering the interaction of a steady incoming current with the cape. Numerical experiments are performed using both two-dimensional (2-D) (vertically integrated) and 3-D versions of the POM model. From the 2-D results, the main controlling parameter appears to be the equivalent Reynolds number Re_f , in agreement with previous historical results. In the 3-D case, the dependence on the vertical Ekman number Ek_v is investigated at fixed Re_f , and a significant intensification of the attached eddy with respect to the 2-D solutions is obtained. The main difference between the 2-D and 3-D dynamics is the presence of a resolved bottom Ekman layer in 3-D, introducing a vertical shear in the incoming current, particularly noticeable in the region of the shelf break. This shear is likely to be responsible for a \"secondary circulation\" (dominated by Coriolis effect), inducing an inshore surface current and associated upwelling in the lee of the cape, and causing the observed eddy intensification. Experiments with realistic bathymetry are performed, and the 3-D results are found to be in good qualitative agreement with the measurements. The results are expected to be relevant for biological transport, pointing out to a mechanism for eddy intensification connected with surface inshore transport and upwelling. (literal)

Editore

• American Geophysical Union (Editore)

Prodotto di

• Marine science institute (ISMAR) (Istituto)
• Circolazione tridimensionale e ricadute sulla produzione attraverso osservazioni in situ ed utilizzo di modelli (TA.P04.017.004) (Modulo)

Autore CNR

• ANNALISA GRIFFA (Unità di personale interno)
• MARCELLO GATIMU MAGALDI (Persona)

Insieme di parole chiave

• Keywords of "Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino" (Insieme di parole chiave)

Incoming links:

Prodotto

• Marine science institute (ISMAR) (Istituto)
• Circolazione tridimensionale e ricadute sulla produzione attraverso osservazioni in situ ed utilizzo di modelli (TA.P04.017.004) (Modulo)

Autore CNR di

• MARCELLO GATIMU MAGALDI (Persona)
• ANNALISA GRIFFA (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of geophysical research (Rivista)

Editore di

• American Geophysical Union (Editore)

Insieme di parole chiave di

• Keywords of "Numerical study of a coastal current on a steep slope in presence of a cape: the case of the Promontorio of Portofino" (Insieme di parole chiave)