Pregled bibliografske jedinice broj: 1100175
Internal seiches in a karstic mesotrophic lake (Prošće, Plitvice Lakes, Croatia)
Internal seiches in a karstic mesotrophic lake (Prošće, Plitvice Lakes, Croatia) // Geofizika, 37 (2020), 2; 157-179 doi:https://.org/10.15233/gfz.2020.37.11 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1100175 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Internal seiches in a karstic mesotrophic lake (Prošće, Plitvice Lakes, Croatia)
Autori
Bencetić Klaić, Zvjezdana ; Babić, Karmen ; Mareković, Tomislav
Izvornik
Geofizika (0352-3659) 37
(2020), 2;
157-179
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
coherence, higher vertical modes, internal seiche, power spectral density, V2H1, V3H1
Sažetak
A lake temperature experiment was performed at the Prošće, Plitvice Lakes, Croatia during a 4-month observational period (6 July–4 November, 2019) to investigate the occurrence and characteristics of internal seiches in the lake. Two-minute mean lake temperatures were measured at a single lake point at fifteen depths ranging from 0.2 to 27 m. Analysis of these data provided in-sight into the previously unknown and rather complex Prošće Lake seiching. Power spectral densities (PSDs) and magnitude-squared coherences (γ2), togeth-er with corresponding cross-spectrum phases that were obtained from the hour-ly mean lake temperature, air pressure and wind speed data, suggested the presence of three vertical modes of an internal seiche. The first mode (V1H1, period of 6.09 h) corresponds to free baroclinic oscillations ; the second mode (V2H1, period of 11.64 h) and the third mode (V3H1, period of 25.60 h) are as-sociated with forced baroclinic oscillations of the lake interior. Excitation of the higher vertical modes is attributed to the influence of dense tributary water. Due to this water influence, vertical temperature gradients in the lake interior were relatively weak ; consequently, a single thick metalimnion and/or two metalimnetic layers were established, which resulted in the presence of the V2H1 and V3H1 modes, respectively. Additionally, due to the influence of trib-utary water, the lake did not attain the typical stratification that is character-ized by hypolimnetic temperatures of ≈ 4°C. Instead, during the entire observa-tional period, the hypolimnetic temperatures were consistently above 7.6 °C.
Izvorni jezik
Engleski
Znanstvena područja
Geofizika, Interdisciplinarne prirodne znanosti
POVEZANOST RADA
Projekti:
Ostalo-Ugovor br. 7989116 - Hidrodinamičko modeliranje sustava Plitvičkih jezera (Bencetić-Klaić, Zvjezdana; Rubinić, Josip; Kapelj, Sanja, Ostalo - Otvoreni natječaj Nacionalnog parka Plitvička jezera) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus