9 research outputs found
Taking into account the influence of the upper part of the section on the results of audiomagnetotelluric soundings using a controlled source in the near zone
ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. Π Π°Π±ΠΎΡΠ° Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π° Π½Π° ΡΡΡΡΠ°Π½Π΅Π½ΠΈΠ΅ ΠΏΡΠΎΠ±Π΅Π»Π° Π² ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠΈ Π΄Π°Π½Π½ΡΡ
ΠΎ Π²Π΅ΡΡ
Π½Π΅ΠΉ ΡΠ°ΡΡΠΈ ΡΠ°Π·ΡΠ΅Π·Π° ΠΏΡΠΈ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡΡ
. ΠΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎ ΡΠ΅ΡΠ°Π΅ΡΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ° Π½Π΅ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΊΡΠΈΠ²ΡΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ Π·Π° ΡΡΠ΅Ρ Π³Π°Π»ΡΠ²Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΠΊΠ°ΠΆΠ΅Π½ΠΈΠΉ, Π²Π½ΠΎΡΠΈΠΌΡΡ
ΠΏΡΠΈΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΡΠΌΠΈ Π½Π΅ΠΎΠ΄Π½ΠΎΡΠΎΠ΄Π½ΠΎΡΡΡΠΌΠΈ. Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ Π·Π°ΠΊΠ»ΡΡΠ°Π΅ΡΡΡ Π² ΠΎΠΏΡΠΎΠ±ΠΎΠ²Π°Π½ΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎ Ρ ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΡΠΌ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠΎΠΌ Π² Π±Π»ΠΈΠΆΠ½Π΅ΠΉ Π·ΠΎΠ½Π΅ Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΠ²Π΅Π΄Π΅Π½ΠΈΠΉ ΠΎ Π²Π΅ΡΡ
Π½Π΅ΠΉ ΡΠ°ΡΡΠΈ ΡΠ°Π·ΡΠ΅Π·Π° ΠΈ Π²Π½Π΅ΡΠ΅Π½ΠΈΠΈ ΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΏΡΠ°Π²ΠΎΠΊ. ΠΠ΅ΡΠΎΠ΄Ρ. ΠΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠΈΠ΅ΠΌΠ½ΠΎ-ΡΠ΅Π³ΠΈΡΡΡΠΈΡΡΡΡΠ΅ΠΉ Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΡ ΠΠΠΠ -2 (ΠΠΠ€ Π£ΡΠ Π ΠΠ, Π³. ΠΠΊΠ°ΡΠ΅ΡΠΈΠ½Π±ΡΡΠ³) Π² ΡΠ°ΡΡΠΎΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 60-16000 ΠΡ. ΠΡΠ½ΠΎΠ²Π½ΡΠ΅ ΠΏΡΠΈΠ½ΡΠΈΠΏΡ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ ΠΎΡΠ½ΠΎΠ²ΡΠ²Π°ΡΡΡΡ Π½Π° Π±Π°Π·Π΅ ΡΠ°Π½Π΅Π΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ ΡΠΏΠΎΡΠΎΠ±Π° ΠΏΡΠ΅ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ ΡΠ°ΡΡΠΎΡΠ½ΡΡ
ΠΊΡΠΈΠ²ΡΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ Π² Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΊΡΠΈΠ²ΡΠ΅ Ρ ΡΡΠ΅ΡΠΎΠΌ Π°ΠΏΡΠΈΠΎΡΠ½ΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ. ΠΠ»Ρ Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ Π²Π΅ΡΡ
Π½Π΅ΠΉ ΡΠ°ΡΡΠΈ ΡΠ°Π·ΡΠ΅Π·Π° Π±ΡΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄Π²Π° ΠΌΠ΅ΡΠΎΠ΄Π°: Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ Π΄ΠΈΡΡΠ°Π½ΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΡΠ΅ Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. Π Π°Π±ΠΎΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠΌ Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΡ ΠΠ Π-ΠΠΠΠ‘ (ΠΠΠ Β«ΠΠ ΠΒ», Π³.Π‘Π°Π½ΠΊΡ-ΠΠ΅ΡΠ΅ΡΠ±ΡΡΠ³) ΠΏΠΎ ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ΅. ΠΠΈΡΡΠ°Π½ΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΡΠ΅ Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π²ΡΠΏΠΎΠ»Π½Π΅Π½Ρ Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΠΎΠΉ ΠΠ§Π-8 (ΠΠΠ€ Π£ΡΠ Π ΠΠ, Π³. ΠΠΊΠ°ΡΠ΅ΡΠΈΠ½Π±ΡΡΠ³) Π½Π° ΡΠ°ΡΡΠΎΡΠ΅ 10 ΠΊΠΡ ΠΏΠΎ ΠΎΡΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠΉ ΡΠ°Π½Π΅Π΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ΅ ΡΠ°Π±ΠΎΡ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΠΏΠΎΠ»Π½Π΅Π½Ρ ΠΎΠΏΡΡΠ½ΠΎ-ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ°Π±ΠΎΡΡ, Π³Π΄Π΅ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΠΎΠ³ΠΎ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠ° Π²ΡΡΡΡΠΏΠ°ΡΡ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Ρ Π³Π°Π»ΡΠ²Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌ Π·Π°Π·Π΅ΠΌΠ»Π΅Π½ΠΈΠ΅ΠΌ ΠΈ ΠΈΠ·Π»ΡΡΠ°ΡΠ΅Π»Ρ ΠΏΠ΅ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠΈΠΏΠ°. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ Ρ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΠΌ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠΎΠΌ ΡΠΈΠ³Π½Π°Π»ΠΎΠ² ΠΈ Ρ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ Π²ΠΎΠ·Π±ΡΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ ΠΈΡΠΊΡΡΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ. ΠΡΡΡΠ½Π΅Π½ΠΎ, ΡΡΠΎ ΡΡΠ°Π½ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΠ°Π·ΡΠ΅Π·Ρ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΡΡ
ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠΎΠ² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠΈΠΏΠΎΠ² ΠΈΠΌΠ΅ΡΡ Π±Π»ΠΈΠ·ΠΊΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ, ΠΎΠ½ΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΊΠΎΠ½ΡΡΠ°ΡΡΠ½ΠΎΡΡΡΡ ΠΈ Π±ΠΎΠ»ΡΡΠ΅ΠΉ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΡΡΡΡ ΠΏΡΠΈ Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΠΈ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ². ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Π΄Π»Ρ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΉ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ Ρ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠ° ΠΏΠΎΠ»Ρ ΡΠΈΠΏΠ° Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠ³ΠΎ Π΄ΠΈΠΏΠΎΠ»Ρ. ΠΡΠ²ΠΎΠ΄Ρ. ΠΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, ΡΡΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΠΎΠ³ΠΎ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠ° ΡΠ»Π΅ΠΊΡΡΠΎΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π² Π±Π»ΠΈΠΆΠ½Π΅ΠΉ Π·ΠΎΠ½Π΅ ΡΠ»ΡΡΡΠ°Π΅Ρ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΠΎΡΡΡ Π°ΡΠ΄ΠΈΠΎΠΌΠ°Π³Π½ΠΈΡΠΎΡΠ΅Π»Π»ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·ΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΠΉ ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠΈΡΡ Π±ΠΎΠ»Π΅Π΅ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΡ ΠΎ Π³Π΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΡΡΠΎΠ΅Π½ΠΈΠΈ ΡΠ°Π·ΡΠ΅Π·Π° Π·Π° ΡΡΠ΅Ρ Π²Π½Π΅ΡΠ΅Π½ΠΈΡ ΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΏΡΠ°Π²ΠΎΠΊ.Relevance. The work is aimed at bridging the gap in obtaining data on the upper part of the section during audiomagnetotelluric sounding. At the same time, the problem of uncontrolled displacement of sounding curves due to galvanic distortions introduced by near-surface irregularities is being solved. The main aim of this work is to test the research methodology by the audiomagnetotelluric sounding method together with a controlled source in the near zone to obtain information about the near-field distribution and the introduction of static corrections. Methods. Audiomagnetotelluric soundings were carried out using the receiving and recording equipment OMAR-2 (Institute of Geophysics UB RAS, Yekaterinburg) in the frequency range of 60-16000 Hz. The basic principles of audiomagnetotelluric processing are based on the previously developed method for converting the frequency curves of soundings into geometric curves, taking into account a priori information. For a detailed study of the upper part of the section, two methods were used: vertical electrical sounding and remote induction sounding. The work by the vertical electrical sounding method was carried out with a set of ERA-MAX equipment (ERA, St. Petersburg) according to the standard method. Remote induction soundings were performed with the MFS-8 equipment (Institute of Geophysics UB RAS, Yekaterinburg) at a frequency of 10 kHz according to the previously developed methodology. Results. Experimental and methodological works, where an electric field generator with galvanic grounding and an induction-type alternating magnetic field emitter act as a controlled source, were carried out. Comparisons of the results of processing audio magnetotelluric soundings with a natural source of signals and with additional excitation of an artificial field are carried out. It was found that the transformed sections using controlled sources of various types have similar parameters, they are characterized by increased contrast and greater reliability in the selection of local objects. An optimal version of the setup for audiomagnetotelluric measurements with the additional use of an induction field source such as a vertical magnetic dipole is proposed. Conclusions. The studies performed shown that the use of a controlled source of an electromagnetic field in the near zone improves the information content of audiomagnetotelluric soundings and allows obtaining more reliable information about the geological structure of the section due to the introduction of static corrections