Site and laboratory investigation of the Slano blato landslide

Bizjak, Karmen Fifer; Zupančič, Andreja

doi:10.1016/j.enggeo.2009.01.006

Cited by 19 publications

(6 citation statements)

References 16 publications

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“…These movements are of different types and have already been recorded (Habič 1968;Buser 1968;Zorn and Komac 2009;Popit and Košir 2010;Popit and Jež 2015;Popit 2016). Among the most studied is the large Slano blato landslide on the northern edge of the Vipava Valley (Kočevar and Ribičič 2002;Logar et al 2005;Placer, Jež and Atanackov 2008;Fifer Bizjak and Zupančič 2009;Mikoš et al 2014), and nearby the landslide Stogovce (Petkovšek et al 2011). Other fossil complex landslides (Popit and Košir 2003;Popit et al 2014b) and other mass movements (rockfall, creep, rotational landslide, debris flow and avalanche) also occur in the broader area, but are still not well studied (Jež 2007;Ribičič 2014).…”

Section: Geological and Geomorphological Settingmentioning

confidence: 99%

Gravitational sliding of the carbonate megablocks in the Vipava Valley, SW Slovenia

Kocjančič

Popit

Verbovšek

2019

AGS

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Annual subscription/letna naročnina: 20 € for individuals/za posameznike, 28 € for institutions/za ustanove. Single issue/cena posamezne številke: 12,50 € for individuals/za posameznike, 16 € for institutions/za ustanove. Cartography/kartografija: Geografski inštitut Antona Melika ZRC SAZU Translations/prevodi: DEKS, d. o. o. DTP/prelom: SYNCOMP, d. o. o. Printed by/tiskarna: Tiskarna Present, d. o. o. Print run/naklada: 350 copies/izvodov The journal is subsidized by the Slovenian Research Agency and is issued in the framework of the Geography of Slovenia core research programme (P6-0101)/revija izhaja s podporo Javne agencije za raziskovalno dejavnost Republike Slovenije in nastaja v okviru raziskovalnega programa Geografija Slovenije (P6-0101).

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Section: Geological and Geomorphological Settingmentioning

confidence: 99%

Gravitational sliding of the carbonate megablocks in the Vipava Valley, SW Slovenia

Kocjančič

Popit

Verbovšek

2019

AGS

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“…2); these have also been folded and fractured. The overlying carbonate rocks are intensively fractured along the thrust contacts and within wide zones of NW-SE trending strike-slip faults (the Predjama, Vipava and Raša faults) that cut the thrust contact (pLacer, 1981;1998;2008;čar & gospodarič, 1988;janež et al, 1997).…”

Section: General Geological Settingmentioning

confidence: 99%

Origin of planation surfaces in the hinterland of Šumljak sedimentary bodies in Rebrnice (Upper Vipava Valley, SW Slovenia)

Popit¹

2017

Geologija

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The Rebrnice area forms the north eastern slopes of the Upper Vipava Valley and is located between Karst plateau to the southwest and the Nanos plateau to the northeast. The Rebrnice slopes are geomorphologically defined by a thrust front of Mesozoic carbonates over Tertiary flysch deposits and are characterised by a variety of polygenetic landslides (being the most prominent geomorphological features). Among them, the three Šumljak sedimentary bodies of fossil landslides (approximately 0.56 km² in area) comprise carbonate gravels and breccia. The most distinctive geomorphological element is the planation surface of the carbonate breccia blocks positioned in the hinterland of the Šumljak sedimentary bodies. Another feature is the presence of local escarpments (steep scarps) defining the border between the planation surface in the hinterland and sedimentary bodies.Our research suggests that the whole area in the hinterland of the Šumljak sedimentary bodies form part of a deep-seated rotational landslide formed of carbonate breccia. On the basis of the dipping of the breccia beds, in particular parts of the rotational blocks, the rotation can reach up to 60°. Planation surfaces developed above the curved, sliding plane in the central part and/or slightly outer part of the landslide. Steep scarps on the external parts of the planation surface represent the main scarps of the Šumljak sedimentary bodies. We propose that these bodies originated from the remobilization of material accumulated in outer parts of large-scale rotational slides and its transportation further downslope, mostly by rock avalanches. IzvlečekObmočje Rebrnic predstavlja severnovzhodna pobočja Zgornje Vipavske doline, ki se nahajajo med kraško planoto na jugozahodu in Nanosom na severovzhodu. Topografijo območja Rebrnic opredeljuje čelo narivnega robu mezozojskih karbonatov, ki so narinjeni na terciarne kamnine fliša, kontakt pa prekrivajo kvartarni pobočni sedimenti, med katerimi so najpomembnejši fosilni in recentni poligenetski plazovi. Med fosilnimi plazovi izstopajo tudi tri sedimentna telesa Šumljak (velikosti 0,56 km²), sestavljena iz karbonatnega grušča in breče in imajo specifične geomorfološke značilnosti. Najbolj značilen geomorfološki element so planarne (izravnane) površine blokov karbonatnih breč v zaledju sedimentnih teles Šumljak in prisotnost lokalnih morfoloških stopenj v obliki strmih robov, ki opredeljujejo mejo med izravnano površino v zaledju in sedimentnim telesom.Raziskave kažejo, da je celotno območje v zaledju sedimentnih teles Šumljak lahko del globokih rotacijskih plazov karbonatnih breč. Na podlagi plastnatosti breče na posameznih delih rotacijskih blokov, ugotavljamo, da so bloki rotirali do 60°. Izravnana površina je razvita predvsem v osrednjem delu planarnih površin, na zunanjih delih izravnav pa se pojavljajo strmi robovi, ki predstavljajo glavne odlomne robove sedimentnih teles Šumljak. Menimo, da so telesa, predvsem v zgornjem delu pobočja nastala kot posledica remobilizacije materiala z zunanjih delov v...

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“…The Slano blato landslide reactivated in 17-19 November 2000 due to an extreme precipitation event. It is more than 1290 m long, 60 to 200 m wide, and 3 to 11 m deep with a volume of approximately 700,000 m 3 [17][18][19][20][21][22]. The main scarp of the landslide is located where the Mesozoic carbonates overthrust the Eocene flysch; the earthflow occurred in the flysch.…”

Section: Slano Blato Landslidementioning

confidence: 99%

“…The blocks have moved both translationally and rotationally [8,11]. One of the biggest (23.5 ha) carbonate blocks is in Strešnice (named Križec in [18] and [19] and it is composed of Mesozoic dolomite (Figure 2g,h and Figure 8). Its travel distance was 850 m and the bedding planes rotated by 25 degrees in azimuth and 15 degrees in dip direction from the original bed position.…”

Section: Strešnice Carbonate Blockmentioning

confidence: 99%

VAT Method for Visualization of Mass Movement Features: An Alternative to Hillshaded DEM

2019

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Hillshaded digital elevation models are a well-known information layer used to determine the geomorphological properties of landslides. However, their use is limited because the results are dependent on a particular sun azimuth and elevation. Approaches proposed to overcome this bias include positive openness, sky-view factor, red relief image maps, and prismatic openness. We propose an upgrade to all these methods, a method named Visualization for Archaeological Topography (VAT). The method is based on a fusion of four information layers into a single image (hillshaded terrain, slope, positive openness, and sky-view factor). VAT can be used to enhance visibility of features of varied scale, height, orientation, and form that sit on terrain ranging from extremely flat to very steep. Besides this, the merits of VAT are that the results are comparable across diverse geographical areas. We have successfully tested the method for landslide recognition and analysis in five different areas in the Vipava Valley (SW Slovenia). Geomorphology of the area is very diverse and holds various types of mass movements. In contrast to classical hillshaded digital elevation models (DEMs), the geomorphological features of landslides obtained by the VAT method are very clearly seen in all studied mass movements.

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Site and laboratory investigation of the Slano blato landslide

Cited by 19 publications

References 16 publications

Gravitational sliding of the carbonate megablocks in the Vipava Valley, SW Slovenia

Gravitational sliding of the carbonate megablocks in the Vipava Valley, SW Slovenia

Origin of planation surfaces in the hinterland of Šumljak sedimentary bodies in Rebrnice (Upper Vipava Valley, SW Slovenia)

VAT Method for Visualization of Mass Movement Features: An Alternative to Hillshaded DEM

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