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Title:Composite landslide in the dynamic alpine conditions: a case study of Urbas landslide
Authors:ID Šegina, Ela (Author)
ID Jemec Auflič, Mateja (Author)
ID Zupan, Matija (Author)
ID Jež, Jernej (Author)
ID Peternel, Tina (Author)
Files:.pdf PDF - Presentation file, download (8,00 MB)
MD5: 3620A7F28DBA2130CF7AA6E319CCA467
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo GeoZS - Geological Survey of Slovenia
Abstract:The alpine environment is characterized by complex geology, high-energy terrain, deeply incised river valleys with high erosional potential, extreme weather conditions and dynamic geomorphic processes. Such settings provide favourable conditions for the formation of composite landslides rather than individual slope mass movement phenomena. As an example, we present the kinematics of the composite landslide Urbas in the North of Slovenia which developed in the complex geological and morphological settings characteristic of the alpine environment. The research combines several monitoring techniques and involves the integration of both surface and subsurface displacements measured in the landslide area. The results indicate that the composite sliding process consists of several simultaneous and interrelated types of movements occurring in different segments of the unstable mass that are governed by different mechanisms of displacements, such as rockfall, sliding and debris flow. The kinematic characteristics of a deep-seated landslide that formed in such conditions vary spatially, but is rather homogenuous vertically, indicating translational type of movement. Spatial kinematic heterogeneity is primarily related to the diverse terrain topography, reflecting in different displacement trends. Based on the revealed kinematic proprieties of the sliding material, the sediment discharge illustrates the sliding material balance which estimates the volume of the retaining material that represents the potential for slope mass movement events of larger scales.
Keywords:composite landslide, alpine conditions, kinematics, monitoring, sediment discharge
Publication status:Published
Publication version:Version of Record
Publication date:12.12.2022
Publisher:Geološki zavod Slovenije
Year of publishing:2022
Number of pages:str. 161-175
Numbering:vol. 65, no. 2
PID:20.500.12556/DiRROS-15929 New window
UDC:504.4
ISSN on article:0016-7789
DOI:10.5474/geologija.2022.010 New window
COBISS.SI-ID:133822467 New window
Note:
Publication date in DiRROS:15.12.2022
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Downloads:321
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Record is a part of a journal

Title:Geologija
Shortened title:Geologija
Publisher:Geološki zavod Slovenije
ISSN:0016-7789
COBISS.SI-ID:5636866 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P1-0419-2022
Name:Dinamična Zemlja

Funder:ARRS - Slovenian Research Agency
Project number:J1-8153-2017
Name:Proučevanje premikanja plazov od izvornih območij do mesta odlaganja z determinističnim pristopom.

Funder:ARRS - Slovenian Research Agency
Project number:Z1-2638-2020
Name:Napovedovanje dinamike globokih plazov z uporabo fizikalnega modeliranja in metod usmerjenih podatkov

Funder:ARRS - Slovenian Research Agency
Project number:J1-3024-2021
Name:Dešifriranje občutljivosti skalnih sten na podnebne spremembe in cikle zmrzovanja in odtaljevanja na območjih brez permafrosta

Funder:EC - European Commission
Funding programme:European Commission
Project number:776335
Name:Geodetic Integrated Monitoring System
Acronym:GIMS

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Title:Sestavljeni plaz v dinamičnih alpiskih razmerah: primer plazu Urbas
Abstract:Za alpsko okolje so značilni kompleksna geologija, razčlenjeno površje, globoko vrezane rečne doline z visokim erozijskim potencialom, ekstremne vremenske razmere in dinamični geomorfni procesi. Takšne razmere so, bolj kakor za nastanek posameznih pojavov pobočnih premikov, prikladne za razvoj sestavljenih plazov. Kot primer takšnega pojava predstavljamo primer sestavljenega plazu Urbas, ki se nahaja v severnem delu Slovenije in je nastal v zapletenih geoloških in morfoloških razmerah značilnih za alpsko okolje. V raziskavi združujemo več tehnik spremljanja plazov in povezujemo izmerjene površinske premike in premike na območju drsne ploskve. Rezultati kažejo, da proces sestavljenega plazenja vključuje več medsebojno povezanih tipov premikov, ki se, z različnimi mehanizmi premikanja (podor, plazenje, drobirski tok), istočasno odvijajo v različnih delih premikajoče se gmote. Kinematične značilnosti globokega plazu, ki je nastal v takšnih razmerah, se spreminjajo prostorsko, po globini pa so precej homogene, kar nakazuje na translacijski tip premikanja plazu. Prostorska kinematična heterogenost pa je v prvi vrsti posledica oblikovanosti površja, ki se odraža v različnih hitrostih premikov. Na podlagi ugotovljenih kinematičnih lastnosti plazečega materiala smo s pomočjo računanja prehajanja sedimenta ponazorili bilanco plazeče se mase in ocenili prostornino materiala, ki zastaja na območju plazu in ki predstavlja potencial za pojav pobočnih masnih premikov večjih razsežnosti.
Keywords:sestavljeni plaz, alpske razmere, kinematika, monitoring, prehajanje sedimenta


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