Large Collapse Dolines in Puglia (Southern Italy): The Cases of “Dolina Pozzatina” in the Gargano Plateau and of “Puli” in the Murge

Castiglioni, Benedetta; Sauro, Ugo

doi:10.3986/ac.v29i2.450

Cited by 8 publications

(5 citation statements)

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“…Morphology of the Gargano Promontory is mostly controlled by E-W and NW-SE-trending faults (Funiciello et al, 1991;Gambini and Tozzi, 1996;Brankman and Aydin, 2004). Karst is well-developed over the entire area, as well as in the rest of the region: the main karst features are represented by a multitude of sinkholes, reaching a maximum density of up to 100 per square kilometer in the Chiancate area (Castiglioni and Sauro, 2000;Simone and Fiore, 2014). Due to widespread outcroppings of soluble rocks (Bosellini et al, 1999), surface hydrography is limited to a few, short, ephemeral drainages along slopes that bound the elevated central plateau (reaching 1000 m a.s.l.)…”

Section: Resultsmentioning

confidence: 99%

Sinkhole clusters after heavy rainstorms

Parise¹,

Pisano²,

Vennari³

2018

JCKS

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Sinkholes are the most common geological hazard in karst terrains. Generally triggered by rainstorms or by changes in the hydrological/hydrogeological regime, they display a wide range of morphologies and sizes. Typically, the main difficulty in evaluating the sinkhole hazard is represented by the collection of reliable data about time of occurrence of the events, which is a mandatory requirement for the estimation of the hazard. In this paper, we document a dozen sinkholes triggered by a heavy rainstorm that occurred during the first week of September 2014 in the Gargano Promontory of Apulia (southeastern Italy). Following a description of the rainstorm, two clusters of sinkholes are described, starting with the identification of the sinkhole type and of the main morphometric characteristics. Even though it is very likely that the documented sinkholes are only a fraction of those caused by the September 2014 rainstorm, this documentation provides insights for the collection of important sinkhole data produced by a specific, triggering storm. introduction Sinkholes (or dolines) are closed depressions with internal drainage, widely regarded as one of the main diagnostic landforms of epigenic karst (Ford and Williams, 2007; Palmer, 2007; Gutiérrez, 2010; De Waele et al., 2011). Sinkholes display a wide range of morphologies (cylindrical, conical, bowl-or pan-shaped), varying in size up to hundreds of meters across and typically from a few to tens of meters deep (Gutiérrez et al., 2008, 2014). The origin of a sinkhole can be natural, if related to the presence of soluble rocks, or anthropogenic. In this latter case, anthropogenic sinkholes indicate a connection to a man-made underground cavity (

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Section: Resultsmentioning

confidence: 99%

Sinkhole clusters after heavy rainstorms

Parise¹,

Pisano²,

Vennari³

2018

JCKS

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“…(npr. Mihevc 1998;Castiglioni in Sauro 2000;Sauro 2000;Šebela in Čar 2000;Šušteršič 2000;Stepišnik 2004;Zhu in Waltham 2005;Stepišnik 2008;Gabrovšek in Stepišnik 2011;Hiller idr. 2014;Stepišnik 2014;Kaufmann in Romanov 2016;Stepišnik 2017;Stepišnik in Grlj 2018;Lipar, Stepišnik in Ferk 2019;Stepišnik in Gostinčar 2020).…”

Section: Pregled Ciljev Raziskovanja Vrtačmentioning

confidence: 99%

Značilnosti vrtač Rakitovsko-Movraškega krasa

Kovačič¹

2022

Geografsko Raziskovanje Slovenske Istre 1

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Uvod -o vrtači kot vzorčni reliefni obliki kraških pokrajinV Sloveniji kraško površje obsega 43-44 % ozemlja (Gams 2004), zato se poznavanje oziroma prepoznavanje vrtače kot značilne površinske kraške oblike zdi samoumevno. V Geografskem terminološkem slovarju je vrtača opredeljena kot »manjša, od nekaj metrov do nekaj sto metrov široka kraška kotanja okroglaste oblike, navadno širša kot globlja« (Kladnik, Lovrenčak in Orožen Adamič 2005); v besedni zvezi se pojavi 14-krat, pojavljajo se tudi različne sopomenke, kot npr. dolina, draga, dol, dolec, udornica, ograda, koliševka, ugrez, ki so kot obči geografski pojmi povezane z obliko, merami ali razvojem obravnavane kraške površinske geomorfološke oblike. V Slovenski kraški terminologiji je vrtača opredeljena kot »depresijska oblika, navadno globoka več metrov, ki je bolj široka kot globoka« (Gams, Kunaver in Radinja 1973). Opisa vrtače v Geografskem terminološkem slovarju in Slovenski kraški terminologiji ustrezata splošni predstavi o njeni obliki oziroma t. i. »šolskemu« primeru vrtače, ki ga je definiral že Cvijić (1895). Dejstvo pa je, da so lahko vrtače v širino in globino tudi manjših in znatno večjih mer. Omenjeni opredelitvi tudi ne pojasnjujeta procesov nastanka vrtač oziroma lahko iz zapisanega nekako razumemo, da je prevladujoči proces nastanka raztapljanje, glede na to, da gre za »kraško« kotanjo (Kladnik, Lovrenčak in Orožen Adamič 2005). V Slovenski kraški terminologiji lahko o različnih procesih njihovega nastanka sklepamo iz imen posameznih tipov vrtač, kot so korozijska vrtača, sufozijska vrtača in udorna vrtača (Gams, Kunaver in Radinja 1973). Podrobneje vrtačo kot geomorfološko obliko določa Leksikon jamske in kraške terminologije (United States Environmental Protection Agency 2002), ki pojasnjuje, da obstajajo vrtače različnih oblik prečnih prerezov,

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“…The name derives from the pre-Latin term grava, meaning pit or hole, and is locally used to indicate deep entrance to cave systems [104]. This type of feature, generally produced through collapse or cover-collapse sinkhole processes, is very common in the Apulian karst [74,75,[105][106][107]. At Castellana, given the relevance of the Grave (the most iconic symbol of the Castellana Caves, with the typical picture showing the solar ray entering the sinkhole at middle morning), its location above parts of the tourist path, and the need to evaluate the stability conditions, this site was surveyed by means of the laser scanner RIEGL VZ400 (Figure 1).…”

Section: Castellana Cavesmentioning

confidence: 99%

Discontinuity Characterization of Rock Masses through Terrestrial Laser Scanner and Unmanned Aerial Vehicle Techniques Aimed at Slope Stability Assessment

et al. 2020

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Stabilization projects of rock masses cannot be performed without a proper geomechanical characterization. The classical approaches, due to logistic issues, typically are not able to cover extensively the areas under study. Geo-structural analysis on point cloud from terrestrial laser scanning and photogrammetry from unmanned aerial vehicles are valid tools for analysis of discontinuity systems. Such methodologies provide reliable data even in complex environmental settings (active cliffs) or at inaccessible sites (excavation fronts in tunnels), offering advantages in terms of both safety of the operators and economic and time issues. We present the implementation of these techniques at a tuff cliff over the Santa Caterina beach (Campania) and at the main entrance of Castellana Caves (Apulia). In the first case study, we also perform an integration of the two techniques. Both sites are of significant tourist and economic value, and present instability conditions common to wide areas of southern Italy: namely, retrogressive evolution of active cliffs along the coast, and instability at the rims of natural and/or artificial sinkholes. The results show the reliability of the data obtained through semi-automatic methods to extract the discontinuity sets from the point clouds, and their agreement with data collected in the field through classical approaches. Advantages and drawbacks of the techniques are illustrated and discussed.

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Large Collapse Dolines in Puglia (Southern Italy): The Cases of “Dolina Pozzatina” in the Gargano Plateau and of “Puli” in the Murge

Cited by 8 publications

References 0 publications

Sinkhole clusters after heavy rainstorms

Sinkhole clusters after heavy rainstorms

Značilnosti vrtač Rakitovsko-Movraškega krasa

Discontinuity Characterization of Rock Masses through Terrestrial Laser Scanner and Unmanned Aerial Vehicle Techniques Aimed at Slope Stability Assessment

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