Utjecaj promjena obilježja snježnog pokrivača na protočni režim - primjer porječja Kupe

master's thesis

• Title (english): The impact of changes in snow cover parameters on discharge regime-example of Kupa river drainage basin
• Author: Iva Knežević
• Mentor: Mladen Maradin (mentor)
• Committee member: Mladen Maradin (predsjednik povjerenstva)
• Committee member: Anita Filipčić (član povjerenstva)
• Committee member: Ivan Čanjevac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geography); Zagreb
• Defense date and country: 2021-11-26, Croatia
• Scientific / art field, discipline and subdiscipline: INTERDISCIPLINARY AREAS OF KNOWLEDGE; Geography

Abstract

Rad se bavi analizom promjena u snježnom pokrivaču i njihovog utjecaja na proljetni protok na odabranim tekućicama porječja Kupe u razdoblju 1989. – 2018. Primjenom MannKendallovog testa analiziran je trend broja dana s snijegom ≥ 1 cm, visine snijega, padalina, temperature zraka i protoka. Broj dana sa snijegom, visina snijega i protok dodatno su analizirani putem RAPS metode. Za korelacijsku analizu između odabranih klimatskih i hidroloških elemenata korišten je Spearmanov koeficijent korelacije. Rezultati rada ukazuju na smanjenje broja dana sa snijegom i visine snijega u prosincu i travnju. Korelacijskom analizom utvrđena je statistički značajna povezanost između akumuliranog snijega i proljetnog protoka. Opažene promjene u protoku odnose se na porast protoka u veljači i ožujku i javljanje minimuma protoka ranije tijekom godine. Naposlijetku je ispitana povezanost između utvrđenih promjena i Sjevernoatlantske oscilacije (NAO). Promjene u snježnom pokrivaču i protoku dijelom su povezane s promjenama u NAO indeksu tijekom istraživanog razdoblja.

Abstract (english)

This paper deals with the changes in snow cover and their impact on spring discharge of rivers in Kupa river drainage basin for the 1989-2018 period. Trend analysis of number of snow days, snow depth, precipitation, air temperature and river discharge was performed using the Mann-Kendall trend test. The number of snow days, snow depth and discharge were further analysed using RAPS method. Correlation analysis was conducted with the nonparametric Spearman test for correlation. The significant downward trend was detected for number of snow days and snow depth in December and April. Accumulated snow and spring discharge are significantly correlated in the study area. There is significant increase in discharge in February and March. The change in the timing of minimum discharge toward earlier in the year was also detected. The changes in snow cover and discharge are related to changes in NAO indices.

• Keywords: snježni pokrivač; protok; padaline; NAO; porječje Kupe
• Keywords (english): snow cover; discharge; precipitation; NAO; Kupa drainage basin
• Language: croatian
• URN:NBN: urn:nbn:hr:217:611238
• Study programme: Title: Geography; specializations in: Physical Geography with Geoecology, Spatial Planning and Regional Development, Heritage and Tourism, Geographic Information Systems, Course research; Course: Physical Geography with Geoecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geografije (magistar/magistra geografije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2022-11-26
• Created on: 2021-12-10 11:36:36