Spremljanje dinamike pobočnih masnih premikov v Vipavski dolini z daljinskim zaznavanjem in in-situ meritvami : doktorska disertacija

Debevec Jordanova, Galena (author), Verbovšek, Timotej (author), Jemec Auflič, Mateja (author)

V sklopu doktorske disertacije sta predstavljena dva primera pobočnih masnih premikov v Vipavski dolini: blatni tok Slano blato nad Lokavcem pri Ajdovščini in kompleksni kamninski plaz Šumljak na Rebrnicah. Oba plazova se uvrščata med aktivne pobočne masne premike, ki ogrožajo varnost prebivalcev in infrastrukture. Za razumevanje in, v kolikor se izkaže tudi potreba po zgodnjem opozarjanju, je pomembno natančno spremljanje aktivnosti in dinamiko plazov. Dinamika plazov Slano blato in Šumljak je bila opazovana z daljinskim zaznavanjem in in-situ meritvami, vendar sta bila zaradi različnih lastnosti plazov za opazovanje premikov implementirana dva različna metodološka pristopa. Blatni tok Slano blato je bil inženirskogeološko skartiran ter opazovan s satelitsko radarsko interferometrijo (InSAR) in fotogrametrijo z BPL, medtem ko je bila dinamika plazu Šumljak določena z uporabo InSAR-ja in rezultati in-situ inklinometrskih meritev. Dinamika plazov je bila definirana na podlagi analize padavinskih dogodkov ter hidrogeološke in hidrogeokemične analize podzemne vode. Na podlagi rezultatov vseh analiz je bilo ugotovljeno, da se plaz Slano blato ne premika več kot blatni tok, kar je rezultat delne sanacije plazu, vendar je še vedno aktiven ob stranskih odlomnih robovih, kjer se prožajo manjši plazovi in usadi ob večjih padavinskih dogodkih in kaže znake lateralnega širjenja plazu. Plaz Šumljak se obnaša kot aktiven počasen kamninski plaz, ki ga poganjajo padavine in nihanje gladine podzemne vode. Ob koncu disertacije podajam poglobljeno diskusijo glede učinkovitosti uporabljene metodologije za spremljanje pobočnih masnih premikov v Vipavski dolini s fokusom na satelitski radarski interferometriji.

• Language: Slovenian
• Keywords: pobočni masni premiki, Vipavska dolina, plaz Slano blato, plaz Šumljak, satelitska radarska interferometrija, fotogrametrija z BPL, inklinometer, inženirskogeološko kartiranje, hidrogeologija, hidrogeokemija
• Work type: Doctoral dissertation
• Typology: 2.08 - Doctoral Dissertation
• Organization: FGG - Faculty of Civil and Geodetic Engineering; NTF - Faculty of Natural Sciences and Engineering
• Place of publishing: Ljubljana
• Publisher: [G. Debevec Jordanova]
• Year: 2025
• Number of pages: XXXII, 215 str., 5 pril.
• PID: 20.500.12556/RUL-169203
• UDC: 55
• COBISS.SI-ID: 236341507
• Publication date in RUL: 17.05.2025

Secondary language

• Language: English
• Title: monitoring the dynamics of slope mass movements in Vipava valley using remote sensing methods and in-situ measurements : doctoral dissertation

Abstract

This doctoral thesis presents study cases of two different landslides in the Vipava Valley: the mudflow Slano blato near Ajdovščina and the Šumljak debris slide. Both of the landslides present active slope mass movements that are threatening the safety of civilians and infrastructure. For the purpose of understanding their behaviour and, if needed, establishing early warning systems, precise monitoring of the landslides' activity and dynamics is of great importance. The landslides were monitored by using remote sensing and in-situ measurements for establishing their dynamics. Due to differences in their characteristics, two different methodologies were defined for the monitoring of the landslides. Slano blato was mapped and observed using satellite radar interferometry (InSAR) and UAV photogrammetry, while Šumljak's dynamics were established based on InSAR and in-situ inclinometer measurements. Their dynamics were further defined by analysing meteorological variables, hydrogeological and hydrogeochemical analyses. Based on the results, it was established that the landslide Slano blato is no longer active as a mudflow, which is the result of partial remediation measures, but it has still active side scarps that trigger in the form of smaller landslides during heavy rainfall. The Šumljak landslide is still active as a rigid slow-moving debris slide and is driven by rainfall and groundwater level fluctuation. In the end of the thesis, an evaluation of the methodology is discussed, focusing on the usability of InSAR for landslide monitoring in the Vipava Valley.

• Keywords: slope mass movements, Vipava Valley, Slano blato landslide, Šumljak landslide, satellite radar interferometry, UAV photogrammetry, inclinometer, hydrogeology, hydrogeochemistry