The study of the influence of climatic fluctuations and water infiltration on the thermal regime of the upper part of the layered earth crust, layers of daily, annual, perennial and other heat cycles is important for the interpretation of hydrogeological, geophysical, engineering-geological and other data, for the establishment of regularities of distribution, formation and preservation of mineral deposits in the search, exploration and exploitation of these deposits, in assessing the overall thermal balance of the earth's surface, as well as in solving agrotechnical and technical problems.

Reconstruction of geologic history is one of the tasks of geophysics, the possibility of solving which is conditioned by geophysical fields and properties of rocks ...

The question of taking into account lateral influences in electrical exploration by direct current methods arose during the first works under hydraulic structures and solving the problems of ore geology ...

The southern slope of the Baltic Shield has been drilled by many wells, mostly shallow. In order to compare the thermal state of crystalline rocks in different regions of the Baltic Shield, temperature measurements in deep boreholes that are not distorted by geomorphologic, hydrogeologic and other influences are necessary.

Stationary groundwater filtration affects the thermal state of rocks and creates anomalous temperature distribution in wells. The amplitude of the temperature anomaly in such geothermograms recorded in wells under steady-state thermal regime can be used to calculate the filtration rate in the aquifer using the formulas...

In the method of infinitely long cable (ILC) on the receiving device located in the vicinity of the ore body, the total magnetic field, consisting of the primary field Hi, created by the cable, and the secondary field H2, excited by the ore object. As a result, the anomalous secondary field stands out against the background of the primary.

The Matsesta area is confined to the Sochi artesian basin with the main aquifers belonging to the Cretaceous and Upper Jurassic limestones. The feeding areas of the artesian basin belong to the open anticlinal structures and the northern limestone-filled sides of the basin. The inner feeding areas are located much lower than the marginal ones and are at the same time places of discharge of deep waters of the basin. The thermal springs of Matsesta and Agura are confined to such areas. The thermal regime of the basin depends on cold waters flowing from the feeding areas and thermal waters entering the discharge areas. The therapeutic waters of Stara Matsesta come to the springs through the chalk rocks from different depths and, consequently, have different temperatures.

Естественное тепловое состояние горных пород нарушается в районе скважины в процессе бурения. Степень нарушения этого состоя­ния зависит от многих причин.

The method of current registration is based on the study of electrical conductivity of torny rocks with the help of an electrode moving in drilling mud along the borehole axis. It is most widely used to determine the location of ore bodies in geological sections of boreholes and dissection of these sections.

In the first approximation the field of a charged isometric body can be considered as a field of a point source. Strictly speaking, it is true for a body of spherical shape lying in a boundless and homogeneous medium. Simplifying the calculations, it is possible to use the field of a point source to replace the field of a charged sphere and in inhomogeneous medium. Despite this assumption, the general conclusions derived from the present work are also acceptable for isometric bodies under certain conditions.

At present, materials of thermal measurements in wells are widely used to determine the geothermal gradient, temperature of formation water and rocks in their natural conditions of occurrence. However, these materials do not always have proper accuracy. One of the main reasons causing the appearance of errors in determining the temperature of rocks and formation water is the violation of the natural thermal field of the Earth by the borehole, i.e., violation of the stationary thermal regime of the area.

The present article is devoted to the development of issues related to the search for sulfide ore bodies missed and lost by mine workings in copper mines of the Urals by means of electrical exploration methods. In it the technique of searching for sulfide ore bodies from mine workings by a complex of electrical prospecting methods (shadow and method of measuring the natural electric field) is given and the possibility of using them in the presence of interfering influence of underground mine power generation is shown. The prospecting works confirmed the success of the proposed method, good performance of the used equipment, accuracy and completeness of interpretation of the shadow method materials. In addition, the present work considers the possibility of application of DC methods for the purposes of prospecting and exploration of ore bodies from mine workings.