Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements

Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the o...
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Autor*in:	Szypłowska, Agnieszka [verfasserIn] Szerement, Justyna [verfasserIn] Lewandowski, Arkadiusz [verfasserIn] Kafarski, Marcin [verfasserIn] Wilczek, Andrzej [verfasserIn] Skic, Kamil [verfasserIn] Skierucha, Wojciech [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model

Übergeordnetes Werk:	Enthalten in: Journal of hydrology - Amsterdam [u.a.] : Elsevier, 1963, 574, Seite 517-528
Übergeordnetes Werk:	volume:574 ; pages:517-528

DOI / URN:	10.1016/j.jhydrol.2019.04.066

Katalog-ID:	ELV002456400

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245	1	0	\|a Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
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520			\|a Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties.
650		4	\|a Soil dielectric properties
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650		4	\|a Soil pore-water electrical conductivity
650		4	\|a Soil salinity index model
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700	1		\|a Lewandowski, Arkadiusz \|e verfasserin \|4 aut
700	1		\|a Kafarski, Marcin \|e verfasserin \|4 aut
700	1		\|a Wilczek, Andrzej \|e verfasserin \|4 aut
700	1		\|a Skic, Kamil \|e verfasserin \|4 aut
700	1		\|a Skierucha, Wojciech \|e verfasserin \|4 aut
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publishDate	2019
allfields	10.1016/j.jhydrol.2019.04.066 doi (DE-627)ELV002456400 (ELSEVIER)S0022-1694(19)30406-8 DE-627 ger DE-627 rda eng 690 DE-600 38.85 bkl Szypłowska, Agnieszka verfasserin aut Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties. Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model Szerement, Justyna verfasserin aut Lewandowski, Arkadiusz verfasserin aut Kafarski, Marcin verfasserin aut Wilczek, Andrzej verfasserin aut Skic, Kamil verfasserin aut Skierucha, Wojciech verfasserin aut Enthalten in Journal of hydrology Amsterdam [u.a.] : Elsevier, 1963 574, Seite 517-528 Online-Ressource (DE-627)268761817 (DE-600)1473173-3 (DE-576)077610628 1879-2707 nnns volume:574 pages:517-528 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.85 Hydrologie: Allgemeines AR 574 517-528
spelling	10.1016/j.jhydrol.2019.04.066 doi (DE-627)ELV002456400 (ELSEVIER)S0022-1694(19)30406-8 DE-627 ger DE-627 rda eng 690 DE-600 38.85 bkl Szypłowska, Agnieszka verfasserin aut Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties. Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model Szerement, Justyna verfasserin aut Lewandowski, Arkadiusz verfasserin aut Kafarski, Marcin verfasserin aut Wilczek, Andrzej verfasserin aut Skic, Kamil verfasserin aut Skierucha, Wojciech verfasserin aut Enthalten in Journal of hydrology Amsterdam [u.a.] : Elsevier, 1963 574, Seite 517-528 Online-Ressource (DE-627)268761817 (DE-600)1473173-3 (DE-576)077610628 1879-2707 nnns volume:574 pages:517-528 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.85 Hydrologie: Allgemeines AR 574 517-528
allfields_unstemmed	10.1016/j.jhydrol.2019.04.066 doi (DE-627)ELV002456400 (ELSEVIER)S0022-1694(19)30406-8 DE-627 ger DE-627 rda eng 690 DE-600 38.85 bkl Szypłowska, Agnieszka verfasserin aut Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties. Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model Szerement, Justyna verfasserin aut Lewandowski, Arkadiusz verfasserin aut Kafarski, Marcin verfasserin aut Wilczek, Andrzej verfasserin aut Skic, Kamil verfasserin aut Skierucha, Wojciech verfasserin aut Enthalten in Journal of hydrology Amsterdam [u.a.] : Elsevier, 1963 574, Seite 517-528 Online-Ressource (DE-627)268761817 (DE-600)1473173-3 (DE-576)077610628 1879-2707 nnns volume:574 pages:517-528 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.85 Hydrologie: Allgemeines AR 574 517-528
allfieldsGer	10.1016/j.jhydrol.2019.04.066 doi (DE-627)ELV002456400 (ELSEVIER)S0022-1694(19)30406-8 DE-627 ger DE-627 rda eng 690 DE-600 38.85 bkl Szypłowska, Agnieszka verfasserin aut Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties. Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model Szerement, Justyna verfasserin aut Lewandowski, Arkadiusz verfasserin aut Kafarski, Marcin verfasserin aut Wilczek, Andrzej verfasserin aut Skic, Kamil verfasserin aut Skierucha, Wojciech verfasserin aut Enthalten in Journal of hydrology Amsterdam [u.a.] : Elsevier, 1963 574, Seite 517-528 Online-Ressource (DE-627)268761817 (DE-600)1473173-3 (DE-576)077610628 1879-2707 nnns volume:574 pages:517-528 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.85 Hydrologie: Allgemeines AR 574 517-528
allfieldsSound	10.1016/j.jhydrol.2019.04.066 doi (DE-627)ELV002456400 (ELSEVIER)S0022-1694(19)30406-8 DE-627 ger DE-627 rda eng 690 DE-600 38.85 bkl Szypłowska, Agnieszka verfasserin aut Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties. Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model Szerement, Justyna verfasserin aut Lewandowski, Arkadiusz verfasserin aut Kafarski, Marcin verfasserin aut Wilczek, Andrzej verfasserin aut Skic, Kamil verfasserin aut Skierucha, Wojciech verfasserin aut Enthalten in Journal of hydrology Amsterdam [u.a.] : Elsevier, 1963 574, Seite 517-528 Online-Ressource (DE-627)268761817 (DE-600)1473173-3 (DE-576)077610628 1879-2707 nnns volume:574 pages:517-528 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.85 Hydrologie: Allgemeines AR 574 517-528
language	English
source	Enthalten in Journal of hydrology 574, Seite 517-528 volume:574 pages:517-528
sourceStr	Enthalten in Journal of hydrology 574, Seite 517-528 volume:574 pages:517-528
format_phy_str_mv	Article
bklname	Hydrologie: Allgemeines
institution	findex.gbv.de
topic_facet	Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model
dewey-raw	690
isfreeaccess_bool	false
container_title	Journal of hydrology
authorswithroles_txt_mv	Szypłowska, Agnieszka @@aut@@ Szerement, Justyna @@aut@@ Lewandowski, Arkadiusz @@aut@@ Kafarski, Marcin @@aut@@ Wilczek, Andrzej @@aut@@ Skic, Kamil @@aut@@ Skierucha, Wojciech @@aut@@
publishDateDaySort_date	2019-01-01T00:00:00Z
hierarchy_top_id	268761817
dewey-sort	3690
id	ELV002456400
language_de	englisch
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author	Szypłowska, Agnieszka
spellingShingle	Szypłowska, Agnieszka ddc 690 bkl 38.85 misc Soil dielectric properties misc Vector-network-analyzer measurements misc Broadband spectra misc Soil pore-water electrical conductivity misc Soil salinity index model Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
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topic_title	690 DE-600 38.85 bkl Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements Soil dielectric properties Vector-network-analyzer measurements Broadband spectra Soil pore-water electrical conductivity Soil salinity index model
topic	ddc 690 bkl 38.85 misc Soil dielectric properties misc Vector-network-analyzer measurements misc Broadband spectra misc Soil pore-water electrical conductivity misc Soil salinity index model
topic_unstemmed	ddc 690 bkl 38.85 misc Soil dielectric properties misc Vector-network-analyzer measurements misc Broadband spectra misc Soil pore-water electrical conductivity misc Soil salinity index model
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title	Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
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title_full	Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
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title_sort	verification of soil salinity index model based on 0.02–3 ghz complex dielectric permittivity spectrum measurements
title_auth	Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
abstract	Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties.
abstractGer	Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties.
abstract_unstemmed	Determination of electrical conductivity of soil pore-water from measurements of soil bulk electrical conductivity and volumetric water content or dielectric permittivity, requires theoretical or empirical models connecting these quantities. One such model is the salinity index model, which in the original formulation requires the measurement of soil bulk electrical conductivity and apparent dielectric permittivity determined with the time-domain-reflectometry (TDR) technique. Currently, many popular soil moisture sensors are operated at a single frequency, usually in the low-frequency part of the typical TDR bandwidth. Yet, no systematic verification of the salinity index model applied with the use of dielectric permittivity measured at specific frequencies in a broad frequency range has been performed. The aim of this paper is to evaluate the salinity index model with the use of dielectric spectra of 277 samples of 14 soils obtained in a 20 MHz–3 GHz frequency range with the use of a coaxial transmission-line cell vector-network-analyzer system. A three-pole Debye model was fitted to the spectra in order to determine bulk electrical conductivity and the real part of dielectric permittivity at chosen frequencies in order to diminish the influence of measurement errors. Then, the salinity index model was applied at each examined frequency and its soil-specific parameters were calculated. The performance of the model was evaluated with the use of the leave-one-out cross-validation scheme, and the frequencies at which the model performed best were found within 0.5–2 GHz range. Finally, the salinity index model parameters obtained at the optimal frequencies were correlated with other soil properties.
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title_short	Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements
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author2	Szerement, Justyna Lewandowski, Arkadiusz Kafarski, Marcin Wilczek, Andrzej Skic, Kamil Skierucha, Wojciech
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up_date	2024-07-07T00:47:24.418Z
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Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements

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Verification of soil salinity index model based on 0.02–3 GHz complex dielectric permittivity spectrum measurements