Naslov
A new approach for bathymetry smoothing in ROMS

Autori
Dutour Sikirić, Mathieu ; Janeković, Ivica ; Kuzmić, Milivoj

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, pp prezentacija, znanstveni

Izvornik
Geofizicki seminar, Geofizicki odsjek fakulteta Zagreb / - , 2009

Skup
Geofizicki seminar, Geofizicki odsjek fakulteta Zagreb

Mjesto i datum
Zagreb, Hrvatska, 18.03.2009

Vrsta sudjelovanja
Plenarno

Vrsta recenzije
Domaća recenzija

Ključne riječi
Regional model; bathymetry

Sažetak
The sigma-coordinate ocean models are currently used for large basin as well as coastal seas simulations. When there is a strongly varying bathymetry the sigma-coordinate system solutions exhibit an intrinsic error in the horizontal pressure gradient term. As a consequence bathymetry smoothing is a necessity for realistic oceanic modelling. Several known approach are commonly used: Shapiro filter, Laplacian filter, Mellor Ezer-Oey method and the recently proposed procedure of Martinho and Batteen. A new, linear- programming (LP) procedure has been proposed to deal with the problem. This method is compared to Shapiro filter, Mellor-Ezer-Oey method and the recently proposed procedure of Martinho and Batteen on three idealized 1-dimensional test cases and for three grids of the Adriatic sea.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA