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1.


    Bobrov, P. P.
    Dielectric permittivity spectra of oil-water-saturated sandy-clayey rocks of different mineralogical compositions and relaxation properties of water in these rocks / P. P. Bobrov, V. L. Mironov, A. V. Repin // Russ. Geol. Geophys. - 2015. - Vol. 56, Is. 7. - P. 1065-1073, DOI 10.1016/j.rgg.2015.06.007. - Cited References: 21. - This work was supported by RFBR (grant nos. 12-05-00502a and 14-05-00151a). . - ISSN 1068-7971
РУБ Geosciences, Multidisciplinary
Рубрики:
MOIST SOILS
   FREQUENCY
   MODEL
   TEMPERATURE
   SALINITY
   RANGE
   GHZ
Кл.слова (ненормированные):
Conductivity -- Dielectric permittivity -- Multifrequency dielectric relaxation -- Oil-bearing deposits -- Sandy-clayey rocks
Аннотация: Experimental measurements of the dielectric permittivity and equivalent conductivity of sandy-clayey samples (a mixture of river sand with bentonite or kaolin) saturated with salt-solution-diesel-fuel emulsions were performed in the frequency range from 10 kHz to 1 GHz at temperatures of 25-65 °C. It is shown that when the content of the salt solution in the saturating fluid does not exceed 10%, the dielectric permittivity in the frequency range from 1 MHz to 1 GHz depends little on the mineral composition of the sample and on the concentration of the saturating solution. When the portion of water is 33.3% or higher, increasing the concentration of the salt solution leads to an increase in the equivalent conductivity and the real part of the complex dielectric permittivity. Using the refractive model of the complex dielectric permittivity, we have estimated the dielectric properties of bound water, which depend on temperature and the type of clay (bentonite or kaolin) in the sand-clay mixture but are independent of the water saturation and the amount of clay in the sample.

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Публикация на русском языке Бобров, Павел Петрович. Спектры диэлектрической проницаемости нефтеводонасыщенных песчано-глинистых пород различного минералогического состава и релаксационные свойства воды в этих породах [Текст] / П. П. Бобров, В. Л. Миронов, А. В. Репин // Геол. и геофиз. - Новосибирск : Изд-во СО РАН, 2015. - Т. 56 № 7. - С. 1359-1368

Держатели документа:
Omsk State Pedagogical University, Naberezhnaya im. Tukhachevskogo 14, Omsk, Russian Federation
L.V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
M.F. Reshetnev Siberian State Aerospace University, pr. im. Gazety Krasnoyarskii Rabochii 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Repin, A. V.; RFBR [12-05-00502a, 14-05-00151a]
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2.


    Bobrov, P. P.
    The effect of dielectric relaxation processes on the complex dielectric permittivity of soils at frequencies from 10 kHz to 8 GHz—Part II: Broadband analysis / P. P. Bobrov, E. S. Kroshka, K. V. Muzalevskiy // IEEE Trans. Geosci. Remote Sens. - 2024. - Vol. 62. - Ст. 2000411, DOI 10.1109/TGRS.2023.3340693. - Cited References: 51 . - ISSN 0196-2892. - ISSN 1558-0644
   Перевод заглавия: Эффект процессов диэлектрической релаксации на комплексную диэлектрическую проницаемость почв на частотах от 10 кГц до 8 ГГц
Кл.слова (ненормированные):
dielectric measurement -- Dobson dielectric model -- Maxwell–Wagner effect -- refraction-relaxation model -- soil moisture
Аннотация: This article is the second in a series evaluating the effect of dielectric relaxation processes on the relatively effective complex dielectric permittivity (RCP) of soils. Part II is based on the results of experimental measurements in the frequency range 10 kHz to 8–20 GHz. The broadband dielectric spectrum model includes the high-frequency part as a model of the dielectric mixture and the relaxation part as the sum of three relaxation processes modeled by the Debye and Cole–Cole formulas. For modeling the high-frequency part of the spectrum, the Dobson and Mironov models were considered as possible options. As stated in Part I, the influence of relaxation processes on the imaginary part of the RCP extends up to frequencies of units of gigahertz. The increase in the imaginary part in these models was compensated by unrealistically high values of the specific electrical conductivity of free and bound water. We examined the correspondence of these models to experimental data at frequencies above 2–5 GHz, assuming that the conductivity of bound and free water is zero. The parameters of relaxation processes were found while solving the least-square optimization problem using the technique for determining the continuous distribution of relaxation times (DRTs). Found process parameters depend on the content of clay, organic carbon, and moisture of the samples. The more clay is in the soil, the greater the strength of these processes is. The influence of organic carbon with the conditions being equal consists in the reduction of the real and imaginary parts of RCP.

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Держатели документа:
Faculty of Physics, Omsk State Pedagogical University, 644043 Omsk, Russia
Omsk Scientific Center SB RAS (Institute of Radiophysics and Physical Electronics), 644099 Omsk, Russia
Kirensky Institute of Physics Federal Research Center KSC Siberian Branch Russian Academy of Sciences, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Kroshka, E. S.; Muzalevskiy, K. V.; Музалевский, Константин Викторович
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3.


   
    Comparison of Two Retrieval Soil Moisture Algorithms on SMOS Data / P. P. Bobrov [и др.] // IEEE International Geoscience and Remote Sensing Symposium (IGRASS) : Proceedings. - Munich, 2012. - P1131-1134, DOI 10.1109/IGARSS.2012.6351349 . - ISBN 978-1-4673-1159-5
Аннотация: We made the conclusion about the main deficiencies of the SMOS data Level 1c and Level 2 for the south part of Western Siberia. This was done for the period from 12.07.10 to 10.11.11 by studying SMOS data, periodic ground base measurements of the brightness temperature at 1.4 GHz and ground base measurements of moisture. We developed a simple algorithm for remote retrieval of soil moisture using data of brightness temperature given at SMOS Level 1c, compared the data of soil moisture, given at SMOS Level 2 with data calculated by our algorithm and in situ measurements of moisture.

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Доп.точки доступа:
Bobrov, P. P.; Mironov, V. L.; Миронов, Валерий Леонидович; Yashchenko, A. S.; Kosolapova, L. G.; Косолапова, Людмила Георгиевна; IEEE International Geoscience and Remote Sensing Symposium (2012 ; July ; 22-27 ; Munich, Germany)
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4.


   
    Diurnal Dynamics Radiobrightness Temperature of Soil on the Frequency 1.4 and 6.9 GHz in the Processes of Freezing/Thawing [Text] / Bobrov P.P., Mironov V.L., Yashchenko A.S. // Proceedings IGARSS. - 2010. - P4477-4479


Доп.точки доступа:
Bobrov, P.P.; Mironov, V.L.; Yashchenko, A.S.
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5.


   
    Effect of Antireflective Surface at the Radiobrightness Observations for the Topsoil Covered with Coniferous Litter [Text] / V. L. Mironov, P. P. Bobrov [et al.] // PIERS Online. - 2009. - Vol. 5, No 8. - P. 751-755

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Доп.точки доступа:
Mironov, V. L.; Bobrov, P.P.; Yashchenko, A.S.; Savin, I.V; Repin, A.V.
}
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6.


   
    Effect of Antireflective Surface at the Radiobrightness Observations for the Topsoil Covered with Coniferous Litter [Text] / V. L. Mironov, P. P. Bobrov [et al.] // Progress in Electromagnetics Research Symposium Proceedings (PIERS 2009). - 2009. - P. 966-970

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Доп.точки доступа:
Mironov, V. L.; Bobrov, P.P.; Yashchenko, A.S.; Savin, I.V.; Repin, A.V.; Progress In Electromagnetics Research Symposium(26 ; 2009 ; Aug. ; 18-21 ; Moscow)
}
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7.


   
    Frequency Dependence of Permittivity of Free and Bound Water in Soils for Different Textures / P. P. Bobrov, V. L. Mironov [et al.] // PIERS Online. - 2009. - Vol. 5, № 5. - P. 426-430

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Доп.точки доступа:
Bobrov, P. P.; Mironov, V. L.; Миронов, Валерий Леонидович; Kondratieva, O.V.; Repin, A.V.
}
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8.


   
    Frequency Dependence of Permittivity of Free and Bound Water in Soils for Different Textures [Text] / P. P. Bobrov, V. L. Mironov [et al.] // Progress in Electromagnetics Research Symposium Proceedings (PIERS 2009). - 2009. - P. 752-756

Материалы конференции

Доп.точки доступа:
Bobrov, P.P.; Mironov, V. L.; Kondratieva, O.V.; Repin, A.V.; Progress In Electromagnetics Research Symposium(26 ; 2009 ; Aug. ; 18-21 ; Moscow)
}
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9.


   
    Generalized refractive mixing dielectric model of moist soils considering ionic relaxation of soil water / V. L. Mironov [et al.] // Rus. Phys. J. - 2013. - Vol. 56, Is. 3. - P. 319-324DOI 10.1007/s11182-013-0034-4
Аннотация: A generalized multi-relaxation refractive mixing dielectric model of moist soils is suggested for frequencies in the range from 0.2 to 14.8 GHz. The model is based on dielectric measurements in this frequency range at a temperature of 20A degrees D for relative moisture content (by weight) changing from 2 to 43%. The model expands the range of applicability of the single-relaxation model suggested previously to the megahertz frequency range with allowance for the Maxwell-Wagner ionic relaxation which is clearly manifested in this frequency range for bound soil water. It is demonstrated that the error in calculating the complex dielectric permittivity spectra of the moist soil has the same order of magnitude as the error of experimental data used for model construction.

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Публикация на русском языке Обобщенная рефракционная диэлектрическая модель влажных почв, учитывающая ионную релаксацию почвенной воды // Известия высших учебных заведений. Физика. - 2013. - Т. 56, № 3. - С. 75-79

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk, Russia
Omsk State Pedag Univ, Omsk, Russia
Academician MF Reshetnev Siberian State Aerosp Un, Krasnoyarsk, Russia

Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Bobrov, P. P.; Fomin, S. V.; Фомин, Сергей Викторович; Karavaiskii, A. Yu.; Каравайский, Андрей Юрьевич
}
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10.


   
    Microwave Dielectric Spectroscopy of Moist Soils for a Forest-tundra Region / V. L. Mironov, P. P. Bobrov, A. P. Bobrov [et al.] // IEEE International Geoscience and Remote Sensing Symposium (IGRASS) : Proceedings. - Seoul, 2005. - Vol. 6. - Ст. 1525917. - P. 4485-4488, DOI 10.1109/igarss.2005.1525917. - Библиогр.: 8 . - ISBN 978-078039050-8
Аннотация: In this paper, the measured microwave dielectric data are presented for some soils collected in the forest-tundra area located at 64° N and 100° E, which is near the city of Tura in East Siberia. The measurements were developed in the range from 0.3 to 12.5 GHz at the temperature of 24°C. The Debye spectroscopic parameters related to the bound soil water (BSW) and free soil water (FSW) were derived with the use of the generalized refractive mixing dielectric model (GRMDM) [1], [2]. The foresttundra soils analyzed were found to contain the smaller percentage of bound water, with its complex dielectric constant (CDC) being less than that of the soils in the agricultural zones of Siberia [3]-[5], in spite of the fact that the forest-tundra soils demonstrated smaller clay and humus percentage as compared to the agricultural soils. The results obtained can be considered as a substantial contribution to the soil dielectric data base for the northern circumpolar region, which is a compulsory element of physically based both the remote sensing models and retrieving algorithms.

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Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Bobrov, P. P.; Bobrov, A. P.; Mandrygina, V. N.; Stasuk, V. D.; IEEE International Geoscience and Remote Sensing Symposium(25 ; 2005 ; July ; 25-29 ; Seoul, South Korea)
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