On the Issues of Spatial Modeling of Non-Standard Profiles by the Example of Electromagnetic Emission Measurement Data

Emiliia Iakovleva,Amilcar Soares,Anton Rassõlkin,Margarita Belova

doi:10.3390/su14010574

Emiliia Iakovleva, Amilcar Soares + Show 2 more

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https://doi.org/10.3390/su14010574

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Abstract

This paper examines the possibility of the spatial modelling of the Earth’s natural pulsed-electromagnetic-field measured values, which form a closed profile without the data inside. This geophysical method allows us to map active tectonic movement which breaches the integrity of pipes. During the experiment, 4.5 km of profiles were measured in the Admiralteysky district of St. Petersburg, Russia. Regular electromotive force (EMF) values and anomalous EMF values were obtained, ranging from 0 to 900 µV and above 900 µV, respectively. The anomalous values are associated with tectonic faults in the bedrock. The data obtained are characterized by complex spatial anisotropy associated with the development of two groups of tectonic faults of different orientations. The authors have considered the problems of the spatial modeling of the data obtained. The main problems, the solutions to which should allow the obtaining of adequate models, have been identified. Based on the analysis of the measurement results, geological features of the studied areas, as well as variography, the following possible solutions were proposed: changing the measurement technique; dividing the data array according to the main directions of anisotropy; the need to introduce additional correction coefficients. The problem revealed in this article requires further research on the basis of the obtained results, which will reduce the cost and timing of such studies, and, as a result, give an opportunity to take into account active tectonic disturbances during the construction and scheduled maintenance of underground utilities, which is especially important within the framework of the concept of sustainable development.

Highlights

Introduction iationsEnsuring the safety of human life in the urban environment, as well as limiting the negative impact of economic activities on the environment, is an integral part of the concept of the sustainable development of territories [1,2]
It is necessary to take into account those electromotive force (EMF) values, the overestimated level of which is associated with the technogenic source
With a special dimensionless correction coefficient. The introduction of such a correction coefficient will help to solve the problems of the interpolation clarity and displaying geodynamically active faults (GDAFs) in the model in conditions of a significant difference in measurements of the EMF value associated with tectonic faults having different coordinates

Summary

Introduction

Introduction iationsEnsuring the safety of human life in the urban environment, as well as limiting the negative impact of economic activities on the environment, is an integral part of the concept of the sustainable development of territories [1,2]. Close attention is paid to the planning of residential areas and related engineering infrastructure—road junctions, electrical and heating networks [3], water supply and drainage systems, sewerage, etc.—as well as the improvement of territories [4] and the creation of social infrastructure [5,6]. These are extremely important and, beyond any doubt, relevant issues. Water supply and drainage systems, as well as heating networks in many cities, were built a long time ago and without proper consideration of geological conditions [9,10].

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