Abstract
The results of measurements of the dielectric and radio emission characteristics of soils sampled in the floodplains of the Ob, Alei, Anuy, Katun, and Charysh rivers in the Altai Territory are presented. Soil samples were obtained on test areas flooded during spring floods, as well as on test sites distanced from rivers and not falling into the zones of possible flooding. Laboratory measurements of dielectric and radio-emitting characteristics of soils were conducted with a bridge type installation using a phase difference meter FK2-18 at the frequency of 1.413 GHz. For samples collected in river floodplains, generalized dependencies of refractions and absorptions on volumetric moisture and temperature are developed. The measured dependencies of the dielectric characteristics on the temperature in the range from 262 to 290 K and on the volumetric moisture in the range from 0 to 0.55 cm3 / cm3 are used to calculate soil cover emissivity. Based on the established regularities, a generalized dependence of the soil moisture on the emissivity of soil cover is calculated. The obtained result is an important step in solving the problems of restoring the spatial-temporal distribution of soil moisture from the data of the L-band satellite microwave remote sensing.DOI 10.14258/izvasu(2018)1-09
Highlights
Приведены результаты измерений диэлектрических и радиоизлучательных характеристик почв, отобранных в Алтайском крае в поймах рек Обь, Алей, Ануй, Катунь, Чарыш
Измеренные зависимости диэлектрических характеристик от температуры в интервале от 262 до 290 К и от объемной влажности в диапазоне от 0 до 0.55 см3/см3 использованы для расчета коэффициентов излучения почвенного покрова
The results of measurements of the dielectric and radio emission characteristics of soils sampled in the floodplains of the Ob, Alei, Anuy, Katun, and Charysh rivers in the Altai Territory are presented
Summary
Приведены результаты измерений диэлектрических и радиоизлучательных характеристик почв, отобранных в Алтайском крае в поймах рек Обь, Алей, Ануй, Катунь, Чарыш. Отобранных в поймах рек, установлены обобщенные зависимости показателей преломления и поглощения почвы от ее объемной влажности и температуры. Измеренные зависимости диэлектрических характеристик от температуры в интервале от 262 до 290 К и от объемной влажности в диапазоне от 0 до 0.55 см3/см3 использованы для расчета коэффициентов излучения почвенного покрова.
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