2 edition of Effects of irrigation on soil temperature and thermal diffusivity. found in the catalog.
Effects of irrigation on soil temperature and thermal diffusivity.
Ghulam Mustafa Sheikh
Written in English
|The Physical Object|
|Pagination||viii, 92 l.|
|Number of Pages||92|
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Since ground thermal diffusivity depends on soil type, density and water content, the range of values that can take is very broad. For instance in ground thermal diffusivity values ranging from × 10 − 6 m 2 / s to 3 × 10 − 6 m 2 / s, depending on the soil by: We aimed to determine soil thermal diffusivity from half-hourly temperature measurements in a Rhodic Kanhapludalf, using three calculation procedures (the amplitude ratio, phase lag and Seemann procedures), as well as from soil component properties, for a comparison of procedures and methods.
INTRODUCTION Soil in its natural environment is constantly subjected to temperature changes and thus thermal effects seem directly involved in the flow of soil water. Knowl- edge of the temperature dependence of various flow parameters such as soil- water diffusivity, hydraulic conductivity, and water capacity is needed to evaluate the extent Cited by: The tillage system employed is one of the key factors on solarisation technology, especially in dryland agricultural fields, because it affects the soil thermal-physical properties due to the strong effects of moisture content, µ, soil temperature, T s, and structure of the soil (soil bulk density ρ b, soil porosity Φ) as shown in Table two types of soil management used with Author: Ahmed Abed Gatea Al-Shammary, Ahmed Abed Gatea Al-Shammary, Abbas Kouzani, Yeboah Gyasi-Agyei, Will.
Soil thermal parameters are important for calculating the surface energy balance and mass transfer. Previous studies have proposed methods to estimate thermal parameters using field data; however, the application of these methods lacks validation and comprehensive evaluation under different climatic conditions.
Here, we evaluate four methods (amplitude, phase shift, conduction–convection Cited by: 9. Bulk density, soil moisture, and soil crusting were, and times higher, respectively, under flood irrigation than under sprinkle irrigation, and infiltration rates were times.
Request PDF | Bulk density effects on soil hydrologic and thermal characteristics: a numerical investigation | Soil bulk density (ρb) is commonly treated as static in studies of land surface. The thermal properties of soil are a component of soil physics that has found important uses in engineering, climatology and properties influence how energy is partitioned in the soil related to soil temperature, it is more accurately associated with the transfer of energy (mostly in the form of heat) throughout the soil, by radiation, conduction and convection.
Graf et al.: Temperature measurement depth effects time averaged effect of soil moisture at each depth. On the other hand, time average effective thermal diffusivity may vary strongly with depth due to differences in soil properties and water content.
To account for this, the analytic solutionCited by: simulation to evaluate temperature effects on furrow irrigation. Cumulative infiltration computed at a constant reference temperature, differed by 9 to 28% from cumulative infiltration values computed using actual furrow stream water temperatures.
To our knowledge, few if any field studies have measured the effect of irrigation water temperature on.