scholarly journals EXPERIENCE OF USING ELECTRICAL TOMOGRAPHY, RADON SURVEY AND MICROSEISMIC SOUNDING IN SEARCH FOR PIPES CONTROLLED BY FAULT ZONES

2020 ◽  
Vol 11 (2) ◽  
pp. 431-446
Author(s):  
K. Zh. Seminsky ◽  
S. A. Bornyakov ◽  
A. A. Bobrov ◽  
A. N. Shagun
Keyword(s):  
Fault Zones ◽  
Electrical Tomography ◽  
Microseismic Sounding ◽  
Radon Survey

scholarly journals Indoor radon monitoring in selected fault zones, Slovakia – preliminary results from the summer monitoring period

2019 ◽  
Vol 49 (4) ◽  
pp. 391-402
Author(s):  
Iveta Smetanová ◽  
Andrej Mojzeš ◽  
František Marko ◽  
Kamil Fekete ◽  
Kristián Csicsay
Keyword(s):  
Direct Contact ◽  
Activity Concentration ◽  
Structural Parameters ◽  
Indoor Radon ◽  
Fault Zones ◽  
Multidisciplinary Research ◽  
Monitoring Period ◽  
Radon Activity ◽  
Radon Survey ◽  
Radon Monitoring

Abstract Indoor radon survey in Sološnica, Vydrník and Zázrivá villages has been performed within the framework of the project “Multidisciplinary research of geophysical and structural parameters, and environmental impacts of faults of the Western Carpathians”. Integration measurement of 222Rn activity concentration has been carried out using RamaRn detectors in houses, offices, schools and kindergartens. Indoor radon activity in the summer monitoring period (June–August 2018) varied from values under the detection limit of 55 Bq/m3 to 480 Bq/m3. In 94% of rooms the radon activity below 200 Bq/m3 was found. The results have been examined in respect of the most used building material and presence or absence of a cellar underneath the room. Indoor radon higher than 300 Bq/m3 was measured only in rooms in direct contact with the subsoil.

scholarly journals Elecrical Tomography and VLF methods contribution to underground wastewater pipe construction

2007 ◽  
Vol 40 (4) ◽  
pp. 1749
Author(s):  
G. Vargemezis ◽  
E. Gerolymatos ◽  
A. Aggelopoulos
Keyword(s):  
Cross Section ◽  
Low Cost ◽  
Fault Zones ◽  
Geophysical Survey ◽  
Treated Wastewater ◽  
Electrical Tomography ◽  
Geophysical Investigation ◽  
Geological Cross Section ◽  
Fault Structures ◽  
Geological Formations

In the area of municipality ofKropia (Attica, Athens) the construction of a tunnel for the transportation of treated wastewater has been decided. The length of the tunnel is approximately 1400 m and it is designed to cross an area at a depth of maximum 100 meters. Geological and tectonic mapping showed the existence of limestone and fault systems zones that are crossing the geological formations. Thus, geophysical survey has been designed in order to provide information about the geological and tectonic status at the proposed area. The application of electrical tomography has been designed in addition with VLF electromagnetic method. The first one was expected to show the geological cross section at the axis designed while the VLF method could provide more detailed information about the fault structures zones at the area. Results of the geophysical survey showed lateral changes of the mechanical behavior of the limestone. In parallel, fault zones that are crossing the axis have been mapped. Considering that engineers need to know the nature of probable problems that they have to deal with, geophysical investigation can provide useful information in a low cost and quick application and contribute to the best decision as concern the final positioning of the tunnel and the penetrating method.

scholarly journals PRELIMINARY DATA ON THE DEEP STRUCTURE OF THE SOUTHERN SLOPE OF ELBRUS MOUNT FROM STUDY OF THE COMPLEX OF GEOLOGICAL-GEOPHYSICAL METHODS

2015 ◽  
Author(s):  
Е.А. Рогожин ◽  
А.В. Горбатиков ◽  
Н.В. Андреева ◽  
М.Ю. Степанова
Keyword(s):  
Preliminary Data ◽  
Deep Structure ◽  
Geophysical Methods ◽  
Active Volcano ◽  
Fault Zones ◽  
Southern Slope ◽  
Geomorphological Mapping ◽  
Microseismic Sounding ◽  
Field Works

В статье приведены результаты комплексных геолого- геофизических исследований южного скло- на горы Эльбрус и части Баксанского ущелья. В ходе полевых работ выполнено геолого-геоморфологи- ческое картирование в совокупности с исследованием глубинного строения с помощью метода микро- сейсмического зондирования (ММЗ). Выявлены особенности геолого-геоморфологического строения вулканического сооружения и его глубинная структура. Так, на глубинном разрезе ясно проявились зоны разломов, а также вулканические очаг и камера. Таким образом, подтверждено, что Эльбрус является по- тенциально активным вулканом The article presents the results of integrated geological-geophysical studies of the southern slope of the Elbrus mount and part of the Baksan valley. During the field works performed geological and geomorphological mapping in conjunction with the study of the deep structure using microseismic sounding method. Peculiarities of geological and geomorphological construction of volcano and its deep structure. So, in the deep horizons was made clear the fault zones, and the volcanic hearth and chamber. Thus, it is confirmed that Elbrus is a potentially active volcano

scholarly journals EXPERIENCE OF COMPLEX MICROSEISMIC AND MAGNETOTELLURIC SOUNDING ON THE NORTHERN PART OF THE CENTRAL SIKHOTE-ALIN FAULT

2021 ◽  
pp. 84-94
Author(s):  
V.V. Pupatenko ◽  
◽  
K.S. Ryabinkin ◽  
A.K. Bronnikov ◽  
A.L. Verkhoturov ◽  
...  
Keyword(s):  
Fault Zone ◽  
Crustal Structure ◽  
Fault Zones ◽  
Magnetotelluric Sounding ◽  
High Resistivity ◽  
Sikhote Alin ◽  
P Waves ◽  
Geoelectric Section ◽  
Microseismic Sounding ◽  
Earth's Crust

We present the results of a study of the crustal structure of the northern part of the Central Sikhote-Alin Fault (CSAF) by methods of microseismic sounding (MSS) and magnetotelluric sounding (MTS). A geoelectric section based on MTS data and a section of relative velocities of P-waves according to MSS data were constructed and interpreted at a depth of up to 9 km and a length of 42 km. The main blocks, their boundaries, fault zones and some anomaly zones identified by microseismic and magnetotelluric sounding practically coincide. The CSAF zone is expressed by a narrow subvertical zone between high resistivity blocks. The data obtained indicate that the fault zone in the study area is impermeable. A similar structure was identified 6 km northwest of the CSAF zone, which can be traced to twice the depth (up to 20 km). It is concluded that the combination of microseismic and magnetotelluric sounding methods is promising for studying the structure of the Earth's crust in fault zones.

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