Internal seiches in a karstic mesotrophic lake (Prošće, Plitvice Lakes, Croatia)
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...
| Permalink: | http://skupni.nsk.hr/Record/nsk.NSK01001108810/Details |
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| Matična publikacija: |
Geofizika (Online) 37 (2020), 2 ; str. 157-179 |
| Glavni autori: | Bencetić Klaić, Zvjezdana (Author), Babić, Karmen, Mareković, Tomislav, geofizičar |
| Vrsta građe: | e-članak |
| Jezik: | eng |
| Predmet: | |
| Online pristup: |
https://doi.org/10.15233/gfz.2020.37.11 Hrčak |
| LEADER | 04532naa a22003854i 4500 | ||
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| 001 | NSK01001108810 | ||
| 003 | HR-ZaNSK | ||
| 005 | 20210914103927.0 | ||
| 006 | m d | ||
| 007 | cr|||||||||||| | ||
| 008 | 210730s2020 ci ad |o |0|| ||eng | ||
| 024 | 7 | |2 doi |a 10.15233/gfz.2020.37.11 | |
| 035 | |a (HR-ZaNSK)001108810 | ||
| 040 | |a HR-ZaNSK |b hrv |c HR-ZaNSK |e ppiak | ||
| 041 | 0 | |a eng |b eng |b hrv | |
| 042 | |a croatica | ||
| 044 | |a ci |c hr | ||
| 080 | 1 | |a 55 |2 2011 | |
| 100 | 1 | |a Bencetić Klaić, Zvjezdana |4 aut | |
| 245 | 1 | 0 | |a Internal seiches in a karstic mesotrophic lake (Prošće, Plitvice Lakes, Croatia) |h [Elektronička građa] / |c Zvjezdana B. Klaić, Karmen Babić, Tomislav Mareković. |
| 300 | |b Ilustr., graf. prikazi. | ||
| 504 | |a Bibliografija: str. 175-177. | ||
| 504 | |a Summary ; Sažetak. | ||
| 520 | |a 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 insight into the previously unknown and rather complex Prošće Lake seiching. Power spectral densities (PSDs) and magnitude-squared coherences (γ2), together with corresponding cross-spectrum phases that were obtained from the hourly 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 associated 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 tributary water, the lake did not attain the typical stratification that is characterized by hypolimnetic temperatures of ≈ 4°C. Instead, during the entire observational period, the hypolimnetic temperatures were consistently above 7.6 °C. | ||
| 520 | |a Tijekom 4-mjesečnog razdoblja (od 6. srpnja do 4. studenog 2019.) proveden je eksperiment mjerenja temperature jezera kako bi se ispitala pojava i osobine unutarnjih stojnih valova u Prošćanskom jezeru (Plitvička jezera, Hrvatska). Dvominutni srednjaci temperature mjereni su u jednoj točki jezera na petnaest dubina u rasponu od 0,2 do 27 m. Analiza tih podataka ukazala je na do sada nepoznatu i prilično složenu strukturu unutarnjih stojnih valova u Prošćanskom jezeru. Spektralne gustoće snage (PSD) i kvadrati magnituda koherencije (γ2) te pripadne kros-spektralne faze koje su izračunate iz srednjih satnih temperature jezera i tlaka zraka te brzina vjetra ukazale su na prisustvo tri vertikalna moda unutarnjih stojnih valova. Prvi mod (V1H1, period od 6,09 h) odgovara slobodnim baroklinim oscilacijama, dok su drugi (V2H1, period od 11,64 h) i treći mod (V3H1, period od 25,60 h) povezani s prisilnim baroklinim oscilacijama unutrašnjosti jezera. Pobuđivanje viših vertikalnih modova pripisano je utjecaju guste vode pritoka. Zbog utjecaja te vode vertikalni temperaturni gradijenti u unutrašnjosti jezera bili su relativno mali te se u skldu s tim formirao jedan debeo metalinij ili dva zasebna metalimnija. U skladu s tim pojavljivali su se modovi V2H1, odnosno V3H1. Nadalje, jezero zbog utjecaja vode pritoka nije postiglo tipičnu stratifikaciju pri kojoj su temperature u hipolimniju ≈ 4 °C. Umjesto toga tijekom cijelog promatranog razdoblja temperature u hipolimniju su neprekidno bile iznad 7.6 °C. | ||
| 653 | 0 | |a Jezera |a Krška jezera |a Stojni valovi |a Koherencija |a Spektralna gustoća snage | |
| 653 | 5 | |a Prošćansko jezero |a Plitvička jezera | |
| 700 | 1 | |a Babić, Karmen |4 aut | |
| 700 | 1 | |a Mareković, Tomislav, |c geofizičar |4 aut | |
| 773 | 0 | |t Geofizika (Online) |x 1846-6346 |g 37 (2020), 2 ; str. 157-179 |w nsk.(HR-ZaNSK)000647968 | |
| 981 | |b Be2020 |b B03/20 | ||
| 998 | |b dalo2109 | ||
| 856 | 4 | 0 | |u https://doi.org/10.15233/gfz.2020.37.11 |
| 856 | 4 | 0 | |u https://hrcak.srce.hr/248684 |y Hrčak |
| 856 | 4 | 1 | |y Digitalna.nsk.hr |