Analiza utjecaja plimnih oscilacija na infiltraciju u sustav odvodnje Vidrice

master's thesis

• Title (english): Analysis of the influence of tidal oscillations on infiltration into the Vidrice drainage system
• Author: Vice Bralić
• Mentor: Gordon Gilja (mentor)
• Committee member: Gordon Gilja (predsjednik povjerenstva)
• Committee member: Monika Zovko (član povjerenstva)
• Committee member: Gabrijel Ondrašek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Soil Amelioration); Zagreb
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Sustav kanala odvodnje u polderima je pod utjecajem oborina koje dotječu površinski i podzemnih voda koje dotječu potpovršinski u kanale. Višak vode iz kanala se u cikličkom režimu rada crpi u recipijent, pri čemu se vodostaj u kanalima snižava i omogućuje infiltracija podzemnih voda. Dostupni podaci su vodostaji u kanalskoj mreži, plimne oscilacije i geometrija kanala. Hipoteza ovog rada je da se korelacijom vodostaja i plimnih oscilacija može utvrditi zavisnost između hidrauličkog gradijenta i dotoka podzemne vode u kanale. Cilj rada je analizirati režim voda u odvodnom kanalu za cijeli raspon vodostaja i izračunati dotok vode u kanalsku mrežu pri različitim razinama mora. Istraživanje se provodi na sustavu odvodnje poldera Vidrice koji se nalazi na području doline rijeke Neretve. U polderu su u sklopu provedbe projekta DELTASAL postavljene 4 vodomjerne postaje koje kontinuirano mjere vodostaj duž glavnog kanala i na jednom lateralnom kanalu. Podaci o vodostaju će biti obrađeni filtracijom kako bi se uklonili šumovi te analizirani statističkim medotama. Analiza će biti fokusirana na ljetno razdoblje kako bi se procijenio doprinos plimnih oscilacija u vrijeme kada nema utjecaja oborina, odnosno površinskog otjecanja na režim voda. Obrađeni podaci će biti korišteni za korelaciju između protoka i nagiba vodnog lica na karakterističnim profilima kanalske mreže.

Abstract (english)

The system of drainage channels in polders is influenced by precipitation that flows on the surface and underground water that flows subsurface into the channels. Excess water from the canal is pumped into the recipient in a cyclic mode of operation, whereby the water level in the canals is lowered and groundwater infiltration is enabled. Available data are water levels in the channel network, tidal oscillations and channel geometry. The hypothesis of this work is that the correlation between water level and tidal oscillations can determine the dependence between the hydraulic gradient and the inflow of underground water into the canals. The aim of the work is to analyze the water regime in the drainage channel for the entire range of water levels and to calculate the inflow of water into the channel network at different sea levels. The research is conducted on the drainage system of the Vidrice polder located in the area of the Neretva river valley. As part of the implementation of the DELTASAL project, 4 water measuring stations were installed in the polder, which continuously measure the water level along the main channel and on one lateral channel. The water level data will be filtered to remove noise and analyzed with statistical methods. The analysis will be focused on the summer period in order to assess the contribution of tidal oscillations at a time when there is no influence of precipitation or surface runoff on the water regime. The processed data will be used for the correlation between the flow and the slope of the water surface on the characteristic profiles of the channel network.

• Keywords: polder; Vidrice; vodostaj
• Keywords (english): polder; Vidrice; water level
• Language: croatian
• URN:NBN: urn:nbn:hr:204:849605
• Study programme: Title: Agricultural Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2024-10-29 12:46:38