Integrated geophysical surveys to assess the structural conditions of a karstic cave of archaeological importance
نویسنده
چکیده
An integrated geophysical survey using both the electrical resistivity tomography (ERT) and groundpenetrating radar (GPR) methods was undertaken over a cave of great archaeological interest in southern Italy. The survey was performed to assess the stability of the carbonate rock roof of the cave. A geophysical survey was preferred to boreholes and geotechnical tests, in order to avoid the risk of mass movements. The interpretation of integrated data from ERT and GPR resulted in an evaluation of some of the electromagnetic (EM) characteristics (such as the EM wave velocity) and the detection of discontinuities (fractures) in the carbonate rock. It is well known that rock fractures constitute a serious problem in cave maintenance, and progressive cracking within the bed rock is considered to be one of the main causes of collapse. An analysis of the back-scattered energy was also required for the GPR data interpretation. Cracks within the bedrock were detected to a depth of about 2 m by using GPR, which allowed for the identification of the loosened zone around the cave.
منابع مشابه
Simulation of Climatic Conditions within the Caves Through a Controlled Laboratory Environment to Estimate the Annual Dissolution Rate of Karstic Shapes Inside Katale Khor and Saholan Caves
Aims & Backgrounds: Katlekhour Cave near Garmab (Zanjan) and Saholan Cave in southeast Mahabad, two Iranian tourist caves, attract a large number of tourists annually. Indiscriminate entry and higher number of tourists into the fragile and sensitive environment of the caves increase the concentration of carbon dioxide and disturb the chemical equilibrium inside the cave and it also has devastat...
متن کاملThe Introduction of the Archaeological Site of Sibeh-Koukherd, Based on Archaeological and Archaeogeophysical Surveys Data
There are many archaeological sites in Iran that have been remained unknown and have been ignored during these years with our neglect and under the pretext of the growth of cities and villages. The study of these sites, each of which is a ring in the history of human studies, is necessary for the correct understanding of the culture of the past. In the village of Koukherd -which is located in B...
متن کاملKarstic water exploration using the Schlumberger VES and dipole–dipole resistivity profiling surveys in the Tepal area, west of Shahrood, Iran
The need for clean groundwater resources to have sustainable development in a country is undoubted. Due to the importance and high quality of karstic waters in supplying water in Iran especially in Shahrood city, it is attempted in this research work to recognize and explore karstic waters in southwest of Tepal area, Shahrood. For this purpose, integration of the results obtained from the metho...
متن کاملImpact of structural geology on integrated water resources modeling improvement; a case study of Garesoo river basin, in Doab-Merek station, Kermanshah, Iran
Garesoo river basin in Doab-Merek, as studying area of this research, located in northwest of Kermanshah province in west part of Iran. There is long-term hydro climatologic data in this basin about rainfall, temperature, etc. (more than 50 years) and main river data (about 35 years). Due to intense fall down groundwater level and seasonal river drying, in the past 10 years .It was necessary th...
متن کاملClassification and identification of karstic aquifers in the OSHTORANKUH region
The karst areas refers to individual areas that shaped by the dissolution of bedrock and subsurface drainage grid development and are connected mainly with limestone. The karstic formations outcrop 20 percent of the land surface of the planet is covered that 11 percent of Iran are part of this 20% is included. The ZAGROS region of origin karstic formations in the country that the formation of k...
متن کامل