Estimation of suspended sediment loads using copula functions

Bezak, Nejc (avtor), Rusjan, Simon (avtor), Kramar Fijavž, Marjeta (avtor), Mikoš, Matjaž (avtor), Šraj, Mojca (avtor)

Suspended sediment load (SSL) observations are usually less frequent than precipitation and river discharge measurements; therefore a reliable procedure is needed for the estimation of SSL. One year of precipitation, SSL, and discharge measurements at 20-min intervals were performed at the Kuzlovec torrent in Slovenia. The Frank copula was selected to construct an event-based model using the following variables: precipitation sum (P), peak discharge (Q), and SSL. The idea was to estimate the SSL based on the measured P and Q. The proposed model was additionally tested using the daily data from the Gornja Radgona station on the Mura River, for which 29 years of data were available and where Khoudraji-Liebscher copulas were used. The estimated SSL values using the copula were compared with different regression models. The proposed copula model yielded meaningful SSL estimates. Some performance criteria and tests indicated that the copula model gives a better fit to the measured data than other tested methods.

• Jezik: Angleški jezik
• Ključne besede: turbidity, extremes, copula, torrent, multivariate approach, sediments
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2017
• Št. strani: 23 str.
• Številčenje: Vol. 9, iss. 8, art. 628
• PID: 20.500.12556/RUL-131074
• UDK: 556.5(497.4)
• ISSN pri članku: 2073-4441
• DOI: 10.3390/w9080628
• COBISS.SI-ID: 8124769
• Datum objave v RUL: 22.09.2021

Gradivo je del revije

• Naslov: Water
• Skrajšan naslov: Water
• Založnik: Molecular Diversity Preservation International - MDPI
• ISSN: 2073-4441
• COBISS.SI-ID: 36731653

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 22.08.2017

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: motnost, ekstremni dogodki, funkcija kopula, hudournik, multivarianten pristop, sedimenti

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-7322
• Naslov: Modeliranje hidrološkega odziva nehomogenih povodij

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0180
• Naslov: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij