Hazard mapping of karst along the coast of the Algarve, Portugal

Forth, R. A.; Butcher, D. P.; Senior, Rebecca A.

doi:10.1016/s0013-7952(98)00056-8

Cited by 37 publications

(12 citation statements)

References 1 publication

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“…Analysis and mapping of geological hazards related to karst require an interdisciplinary approach devoted to examination of the specific problems presented in the karst environment (Forth et al , 1999). The peculiarities of karst make it a unique setting from many different points of view (geological, morphological, hydrogeological, not to mention its high vulnerability in terms of land degradation, pollution and human impact).…”

Section: S Discussion and Conclusionmentioning

confidence: 99%

Karst subsidence in South-Central Apulia, Southern Italy

Rose¹,

Parise²

2002

IJS

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Subsidence in the karst of Apulia (Southern Italy), one of the classical karst areas of Italy, is described in this paper. The carbonate rocks that make up the geological structure of the Apulia region are affected by subsidence, which is of different type and intensity depending upon geological , topographical, and hydrogeological conditions. In particular, we discriminate between inland subsidence and coastal subsidence. Inland subsidence is generally restricted to the presence of individual cavities, either empty or partly or totally filled with deposits produced by dissolution of soluble rocks underground. Locally, such subsidence can cause severe effects on anthropogenic structures above. The coastal plains of Apulia, particularly the southernmost part (Salento Peninsula) , show interesting karst subsidence. Here the main feature is the development of compound sinks extending for several thousands of square metres, or the formation of individual, mostly circular, dolines along the coastline. Occurrence of one or the other of the above features seems to depend upon topographical conditions, and also upon their relationship with sea level oscillations.

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Section: S Discussion and Conclusionmentioning

confidence: 99%

Karst subsidence in South-Central Apulia, Southern Italy

Rose¹,

Parise²

2002

IJS

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“…A vulnerability assessment also from Spain (performed in the Sierra de Líbar in Andalusia) produced a hazard map conveying the risk of groundwater contamination [91]. A composite hazard map was generated for Miocene calcarenites and Pleistocene sands east of Portimao in the Algarve, Portugal that was intended for use by planners and developers [92]. Before drilling a tunnel in Switzerland, for instance, it was necessary to use a predictive model to determine whether to expect high-flow events into the tunnel (due to high water head and discharge) affecting the construction [93].…”

Section: Current Solutions Detection and Monitoringmentioning

confidence: 99%

Part 1: Contemporary Challenges and Current Solutions in Sinkhole Occurrence and Mitigation

Mj¹

2017

J Geol Geophys

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This review considers the current literature on sinkhole formation and occurrence. It incorporates several examples from around the world in order to gain a broader geographical scope on the problem. Challenges associated with sinkholes center around atmospheric acidification (pollution) and the formation of dissolution sinkholes. In addition, urbanization and its imposed changes on surface drainage as well as aquifer contamination also bear upon this geohazard. Solutions have been grasped through the deployment of geophysical techniques, in particular GPR. Engineering solutions are presented and critically discussed. Preventative planning based on early detection (through geophysical, GIS and multivariate analysis plus modeling, and possibly remote sensing techniques) are among the most effective available solutions. More research is needed to investigate the effects of increasing surface temperatures and interactions (synergies) with pollution.

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“…There have been few studies carried out on collapse hazard and/or susceptibility mapping such as: Forth et al (1999), Tolmachev et al (1999), Kaufmann and Quinif (2002), Zhou et al (2003), Yilmaz (2007), Bruno et al (2008), Guerrero et al (2008), and Galve et al (2008). Forth et al (1999) produced a map showing relative risk of collapse occurrence along the coast of the Algarve (Portugal). The study had considered sinkholes, caving, gullying, slope angle, tension crack, fissuring, rockfalls, mechanical strength and vegetation cover as controlling factors.…”

Section: Hazard Mappingmentioning

confidence: 99%

Gypsum collapse hazards and importance of hazard mapping

Yilmaz

Marschalko

Bednařík

2011

Carbonates Evaporites

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Collapse in gypsum terrains is a serious geological hazard and can damage engineering structures, settlement areas, natural lakes, and allow infiltration of contaminants into the groundwater. Presentation of engineering geological data in the form of a hazard map is a useful tool in urban planning. To avoid the problems and thus save property and money, detailed geoscientific data should be collected and used in urban planing. Interpretation of future collapse occurrence requires an understanding of conditions and processes controlling collapse events. To predict collapse, it is necessary to assume that collapse occurrence is determined by collapse-related factors, and that future collapses are likely to occur under the same conditions as past collapses. In this study, collapse hazard was reviewed and a method was presented for collapse susceptibility mapping in gypsum terrain in of Sivas basin (Turkey) using a statistical method (conditional probability).

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Hazard mapping of karst along the coast of the Algarve, Portugal

Cited by 37 publications

References 1 publication

Karst subsidence in South-Central Apulia, Southern Italy

Karst subsidence in South-Central Apulia, Southern Italy

Part 1: Contemporary Challenges and Current Solutions in Sinkhole Occurrence and Mitigation

Gypsum collapse hazards and importance of hazard mapping

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