In this article a new neural network based method for automatic classification of ground penetrating radar (GPR) traces is proposed. The presented approach is based on a new representation of GPR signals by polynomials approximation. The coefficients of the polynomial (the feature vector) are neural network inputs for automatic classification of a special kind of geologic structure—a sinkhole. ...

Abstract The formation of sinkholes, especially in developed areas, constitutes a considerable hazard to the public safety. Due above, subject paper is significant and current issue. includes case study sinkholes forming over shallow mine galleries. Calculations workings’ stability impact underground mining exploitation have been conducted. probability sinkhole has determined as well. time did ...

Sinkholes represent the main hazards in karst areas, and are related to presence of natural and anthropogenic cavities. In order to mitigate the risk related to sinkholes, identification of likely premonitory signs preceding the catastrophic phase of collapse may be extremely important. Remote sensing and surface monitoring can be used at this aim: multi-pass spaceborne Differential Synthetic A...

Since the early 1990s, sinkholes and wide, shallow subsidence features (WSSFs) have become major problems along the Dead Sea shores in Israel and Jordan. Sinkholes are readily observed in the field, but their locations and timing are unpredictable. WSSFs are often difficult to observe in the field. However, once identified, they delineate zones of instability and increasing hazard. In this stud...

Sinkholes are a widespread geological hazard, typical of karst lands, where they generally originate as collapse features related to presence underground voids. Nevertheless, other types sinkholes can be formed through solution, suffusion and sagging processes. also originated in relation artificial cavities, excavated by man past times. In Italy, interest large sectors the country, given very ...

The term “karst” applies to a distinctive type of landscape that develops from the dissolving action of water on soluble bedrock (Figure 11.1)—primarily limestone and marble but also dolostone, gypsum and halite. Karst landscapes are characterized by fluted and pitted rock surfaces, shafts, sinkholes, sinking streams, springs, subsurface drainage systems, and caves. The unique features and thre...

Physicochemical characterization, automated ribosomal intergenic spacer analysis (ARISA) community profiling, and 16S rRNA gene sequencing approaches were used to study bacterial communities inhabiting submerged Lake Huron sinkholes inundated with hypoxic, sulfate-rich groundwater. Photosynthetic cyanobacterial mats on the sediment surface were dominated by Phormidium autumnale, while deeper, o...

Sinkholes are a severe problem in urban areas located karstic regions, especially where evaporitic rocks such as gypsum exist. Identification and proposal of mitigation measures needed to reduce this geo-hazard effect on buildings social living. This paper presents case study the town Alcalá de Ebro (Spain), which is highest sinkhole risk region Europe. The identification series sinkholes that ...