EpitomeGS - GPR | ERT | GIS | VES | SRT | GEO Survey in India

1. EPITOME GEO-TECHNICAL SERVICES EpitomeGS is a GEO survey company in India. We deal in DPR preparation, GPR, ERT, SUE, VES, SRT, DGPS, GIS survey providers in India. Geodetic Survey A Geodetic survey ascertains the definite position of permanent points on the surface of the earth, after considering the shape, size, and curvature of the earth. Geodetic surveying is the survey in which the curvature of the earth is taken into account and a higher degree of accuracy in linear and angular observations is achieved. The geodetic surveys stretch beyond large areas and lines attaching any two points on the surface of the earth are treated as arcs. For evaluating their estimated distances on the plans or maps, the rectifications for the earth’s curvature is obtained to the measured distances. The angles between the curved lines are considered as spherical angles. The knowledge of spherical trigonometry is required for making measurements in relevance to geodetic surveys. Geodetic surveying methods are connected when zones or separations included are great to the point that coveted exactness and accuracy results can’t be acquired by conventional or plane looking over. Geodetic estimations are presently being finished with the utilization of circling satellites that are situated 12,500 miles over the surface of the earth. SCOPE AND USE OF GEODETIC SURVEYING Geodetic surveys are undertaken with the highest degree of precision to obtain widely spaced control points on the surface of the earth for following plane surveys. Allocation of these control points relies on the principle of surveying from the whole to the part and not from the part to the whole, as mentioned before. Geodetic survey necessitate the use of advanced instruments and exact methods of scrutiny and their computation with proper placements. To diminish the chances of mistakes in the observations because of refraction, angular observations are normally limited tonight and arc lamps are used for signals on the survey stations. This is the technology of identifying and relating the position of objects on the earth relative to each other while keeping into account the size, shape, and gravity of the earth. Such a survey is best suited for large zones and long lines and is used to locate the exact location of basic points required for establishing control for other surveys. Practical applications of geodetic Survey include observing the movements of the earth and defining the exact location of points on the surface of the earth, to be used for tracking the satellite and global navigation. Electrical Resistivity Imaging EpitomeGS is Electrical Resistivity Imaging and Electrical Resistivity Tomography Company in India.

2. Electrical Resistivity Tomography is a non-destructive practice in which an array of electrodes (typically 64) is used and connected by a cable containing multiple cores to get a subsurface investigation, or pseudosection, of the variation in resistivity, along with the survey line and below the surface both. Though it’s not as famous as ground penetrating radar (GPR), still it has its benefits and can be very useful in certain situations. If you are looking for Electrical Resistivity Tomography in India then you are at the right place. ERT necessitates the measuring of the evident electrical resistivity of subsurface materials. During the course of an ERT Survey the electrical current is inserted into the earth via a pair of current electrodes, and the possible difference is calculated between a pair of potential electrodes. Then possible electrodes and current are arranged in a linear array. The visibly calculated resistivity is the mass average resistivity of all subsurface materials that causes its impact on the flow of current. A particular ERT survey includes many such measurements of visible resistivity with different configurations of electrode locations. We are top supplier for Electrical Resistivity Tomography in India. Further, the data is processed and resistivity contour maps are made to show resistivity differences along different positions in depth and horizontally. Because the electrical resistivity of subsurface materials differs based on the water content and its composition, the resistivity contour maps can be utilized to reach a general background of the subsurface or find interesting targets. As in the example of soils and bedrocks normally have different resistivity levels, soil-bedrock interfaces can be portrayed through ERT. We are one of leading Electrical Resistivity Tomography in India. APPLICATIONS OF ERT INCLUDE This approach is exclusively useful for investigations of important sites to obtain information on weak zones or buried channels, detect under the rock interface, which usually is undetected in seismic refraction, which terminated at rock interface. Resistivity imaging can also be used to ascertain rock profile along dam axis across high current shallow rivers where deployment of hydrophones cannot be done limiting the use of seismic refraction. As deep penetration seismic refraction techniques need the use of explosives, which are not always possible to deploy especially in sensitive areas. In such cases, opposite imaging can very well be used to obtain detailed information about deeper layers. Get a best quote for Electrical Resistivity Tomography in India ADVANTAGES OF ERT         Qualitative interpretation of the data is rapid and straightforward Expenses in the Field are minimum Flexible and can be utilized for multi-purposes and investigating depths. Used for Profiling and sounding both Rapid shallow investigations The equipment is light in weight, easy to carry and inexpensive Excellent 2D display of ground resistivity DISADVANTAGES OF THE ERT     The certainty of depth analysis is lower than with seismic techniques. Deep investigations require long cables and consume more time in the field Analysis of complex geological structures is challenging and unclear Since metal pipes, cables, fences, and electrical grounds are used this can complicate the analysis Hence, ERI determines The ability of geophysical interpretations to calculate both subsurface physical parameters such as ground resistivity, and also ascertain the spatial differences of the measured parameter along the three orthogonal directions. Thank You For Reading This PDF You Can get more knowledge about Geodetic Survey & Electrical Resistivity Imaging Click Here EpitomeGs