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Complex geophysical survey for archaeological purposes in the area of the Chateau Garden in Teplice
Vošvrdová, Eliška ; Dohnal, Jiří (advisor) ; Tábořík, Petr (referee)
This diploma thesis deals with application of geophysical methods in archeology, in the first part by an overview of the methods used for localization and analysis of historical anthropogenic cavities for archeological purposes. In the second part of the thesis, the application of selected methods on a specific locality is described. The initial part of the work summarizes information regarding the geophysical localization of historical anthropogenic cavities, thus underground objects, created by human activity. Their general and physical characteristics are introduced, as well as the specifics associated with their geophysical search, and the principles for choosing a method based on the parameters of the given object. The most frequently used methods in the survey of anthropogenic cavities include gravimetry, geoelectrical DC resistivity methods (symmetric resistivity profiling and electrical resistivity tomography), electromagnetic methods (ground penetrating radar and dipole electromagnetic profiling) and thermometry. A fundamental part of the diploma thesis is devoted to a comprehensive geophysical examination of the archaeological site. The location of the exploration work was the Chateau Garden in Teplice (North Bohemia), below which there are historical cellars. Ground penetrating radar,...
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Geophysical methods for localization and exploration of deserted medieval villages
Vošvrdová, Eliška ; Dohnal, Jiří (advisor) ; Kněz, Jaroslav (referee)
This bachelor thesis deals with geophysical methods used for localization and exploration of deserted medieval villages. It's comprised of two closely related parts: theoretical and practical. First of which, the thesis reviews the current knowledge about deserted medieval villages, how to locate them and describes practical application of selected geophysical methods such as magnetometry, geoelectrical resistivity survey (symmetric resistivity profiling, electrical resistivity tomography) and electromagnetic (ground penetrating radar, dipole electromagnetic profiling). In addition to the explanation of basic principles and practical use of the methods in archaeological prospection, this part of the thesis presents particular examples of structures and objects that are being sought around the areas of deserted medieval villages. The second part is experimental and its main aim is to describe geophysical research of a selected area called Štítary u Městce Králové. The primary purpose of research was to localize relicts of deserted medieval village. This part of the thesis examines the preparation proces, implementation of the terrain measurment, the data processing and, most importantly, the interpretation of the final results. Key words: archaeology, deserted medieval villages, geophysical methods,...
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Complex interpretation of gravity data focused on tectonic structure assessment and environmental projects
Mantlík, František ; Kobr, Miroslav (advisor) ; Blecha, Vratislav (referee) ; Pašteka, Roman (referee)
3 Abstract Gravimetry is an enormously expanding geophysical exploration method during the last decade. Unfortunately the gravity inversion ambiguity problem introduces the necessity to constrain gravity model parameters by other independent data. Overview of gravity data processing and interpretation is presented. All stages of the project lifecycle are discussed with emphasis to the methodological aspects and new challenges introduced by common use of modern digital zero-length spring gravimeters. Special attention is drawn on approaches used in the presented case histories projects. Description of the interpretation stage of the project concentrates on constraining of gravity model parameters with a complex of geophysical and geological data in order to reduce ambiguity of the inversion process in gravimetry. In addition, approaches used for delineation of tectonic structures, an important aspect of the interpretation stage, are described. Three case histories examples are presented to demonstrate methodological aspects of the interpretation of gravity data. They are focused on environmental problems and tectonic structure assessment. The first project represents an attempt to use micro-gravity for determination of internal structure of an undocumented sealed landfill. The second project demonstrates...
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Analysis of the subsurface struckutes location in representative transections of the research catchments
DUBEC, Štěpán
This theses is focused on the description of subsurface in the area of interest - Kopaninský and Jenínský stream catchment - and consequently thy most accurate interpretation depth of impermeable bedrock. Geophysical multicable metod (ERT - electrical resistivity tomography") was selected for field measurements. This method of geophysical survey provides the information on subsurface structures, verifies hypotheses and brings new information on the lithological and structural conditions below the surface. ERT measurements were performed automatically by geoelektrical ARES device in combination with inteligent electrodes. The data obtained by field measurements were plotter in the form of resistive sections (using ReS2DInv software) which were used for the later interpretation. The given results determine the depth and process of impermeable bedrock which are important for more accurate data inputs like for modeling rainfall-runoff processes especially in the field of calibration and validation of each adjustment of models as well as for the next other hydrogical analyzes and studies carried out in the research projects. The purpose of this work is to determine the depth of impermeable bedrock and could serve as a data input for MIKE SHE hydrological modeling.
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Methods for determining the depth of impermeable bedrock as a basis for hydrological reserch.
DUBEC, Štěpán
This thesis is focused on the description of subsurface structures in the area of interest - Kopaninský stream catchment - and consequently the most accurate interpretation depth of bedrocks. Geophysical multicable metod (ERT ?electric resistivity tomography?) was selected for field measurements. This method of geophysical survey provides the information on subsurface structures, verifies hypotheses and brings new information on the lithological and structural conditions below the surface. ERT measurements were performed automatically by geoelectrical ARES device in combination with intelligent electrodes. The data obtained by field measurements were plotted in the form of resistive sections (using RES2DINV software) which were used for interpretation. The result of this work is to determine the depth of bedrocks and should serve as a data input for MIKE SHE hydrological modeling.
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