Passive Capillary Sampler for Measuring Soil Water Drainage and Flux in the Vadose Zone: Design, Performance, and Enhancement

2008 ◽  
Vol 24 (4) ◽  
pp. 439-446 ◽  
Author(s):  
J. D. Jabro ◽  
Y. Kim ◽  
R. G. Evans ◽  
W. M. Iversen ◽  
W. B. Stevens
Keyword(s):  
Soil Water ◽  
Vadose Zone ◽  
Water Drainage ◽  
Design Performance

Characterization of hydraulic properties in the upper vadose zone for two aquifers in Slovenia

2021 ◽  
Author(s):  
Vesna Zupanc ◽  
Matjaž Glavan ◽  
Miha Curk ◽  
Urša Pečan ◽  
Michael Stockinger ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Soil Water ◽  
Water Flow ◽  
Vadose Zone ◽  
Hydraulic Properties ◽  
Isotope Composition ◽  
Transport Processes ◽  
Precipitation Event ◽  
Water Fluxes ◽  
Flow And Transport

<p>Environmental tracers, present in the environment and provided by nature, provide integrative information about both water flow and transport. For studying water flow and solute transport, the hydrogen and oxygen isotopes are of special interest, as their ratios provide a tracer signal with every precipitation event and are seasonally distributed. In order to follow the seasonal distribution of stable isotopes in the soil water and use this information for identifying hydrological processes and hydraulic properties, soil was sampled three times in three profiles, two on Krško polje aquifer in SE Slovenia and one on Ljubljansko polje in central Slovenia. Isotope composition of soil water was measured with the water-vapor-equilibration method. Based on the isotope composition of soil water integrative information about water flow and transport processes with time and depth below ground were assessed. Porewater isotopes were in similar range as precipitation for all three profiles.  Variable isotope ratios in the upper 60 cm for the different sampling times indicated dynamic water fluxes in this upper part of the vadose zone. Results also showed more evaporation at one sampling location, Brege. The information from stable isotopes will be of importance for further analyzing the water fluxes in the vadose zone of the study sties. <br>This research was financed by the ARRS BIAT 20-21-32 and IAEA CRP 1.50.18 Multiple isotope fingerprints to identify sources and transport of agro-contaminants.  </p>

Modeled crop water use and soil water drainage

1991 ◽  
Vol 19 (2) ◽  
pp. 117-134 ◽  
Author(s):  
Orlan Buller ◽  
Harry L. Manges ◽  
Loyd R. Stone ◽  
Jeffery R. Williams
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Water Drainage ◽  
Crop Water ◽  
Crop Water Use

scholarly journals Diurnal pattern of the drying front in the desert and its application for determining the effective infiltration

2009 ◽  
Vol 6 (1) ◽  
pp. 1021-1054 ◽  
Author(s):  
Y. Zeng ◽  
Z. Su ◽  
L. Wan ◽  
Z. Yang ◽  
T. Zhang ◽  
...  
Keyword(s):  
Soil Water ◽  
Vadose Zone ◽  
Inner Mongolia ◽  
Rainfall Event ◽  
Balance Model ◽  
Physical Parameters ◽  
Badain Jaran Desert ◽  
Hydrological Process ◽  
Diurnal Pattern ◽  
Variation Pattern

Abstract. Located in western Inner Mongolia, the Badain Jaran Desert is the second largest desert in China and consists of a regular series of stable megadunes, among which over 70 permanent lakes exist. The unexpected lakes in desert attracted research interests on exploring the hydrological process under this particular landscape; however, a very few literatures exist on the diurnal and spatial variation of the drying front in this area, which is the main issue in the desert hydrological process to characterize the movement of water in soil. In order to understand the drying front in the Badain Jaran Desert, a field campaign was conducted by the observations of soil physical parameters and micrometeorological parameters. With the field data, the performance of a vadose zone soil water balance model, the HYDRUS, was verified and calibrated. Then, the HYDRUS was used to produce the spatial and temporal information of coupled water, water vapour and heat transport in sand to characterize the variation pattern of the drying front before, during and after the rainfall. Finally, the deepest drying front was applied to determine the effective infiltration, which is defined as the amount of soil water captured by the sand beneath the deepest drying front by infiltrating water of an incident rainfall event.

scholarly journals Measuring Water Transmission Parameters in Vadose Zone Using Ponded Infiltration Techniques

2002 ◽  
Vol 7 (2) ◽  
pp. 17
Author(s):  
D.E. Elrick ◽  
W.D. Reynolds
Keyword(s):  
Soil Water ◽  
Vadose Zone ◽  
Plant Nutrient ◽  
Industrial Chemicals ◽  
Transmission Parameters ◽  
Primary Mechanism ◽  
Soil Water Flow ◽  
Constant Head ◽  
Water Transmission ◽  
Infiltration Techniques

The flow of soil water is characterized by water transmission parameters, field-saturated hydraulic conductivity, matric flux potential and sorptivity. Soil water flow is, in turn, the primary mechanism by which soil contaminants, such as excess plant nutrient, bacteria, viruses, salts, and industrial chemicals are transported. Consequently, knowledge of soil water transmission parameters is essential for understanding, preventing and remediating the contamination of soil water and ground water. This paper describes steady-state and transient methods for obtaining soil water transmission parameters from ponded infiltration under constant head and falling head conditions in surface rings and shallow auger holes. Also discussed are the conditions under which the various methods are most appropriate. 

scholarly journals Using Wastewater in Irrigation: The Effects on Infiltration Process in a Clayey Soil

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 968 ◽  
Author(s):  
Ammar A. Albalasmeh ◽  
Mamoun A. Gharaibeh ◽  
Ma’in Z. Alghzawi ◽  
Renato Morbidelli ◽  
Carla Saltalippi ◽  
...  
Keyword(s):  
Soil Water ◽  
Hydraulic Properties ◽  
Field Experiments ◽  
Overland Flow ◽  
Clayey Soil ◽  
Water Infiltration ◽  
Treated Wastewater ◽  
Water Drainage ◽  
Infiltration Process ◽  
Relevant Effect

Soil water infiltration is a critical process in the soil water cycle and agricultural practices, especially when wastewater is used for irrigation. Although research has been conducted to evaluate the changes in the physical and chemical characteristics of soils irrigated by treated wastewater, a quantitative analysis of the effects produced on the infiltration process is still lacking. The objective of this study is to address this issue. Field experiments previously conducted on three adjacent field plots characterized by the same clayey soil but subjected to three different irrigation treatments have been used. The three irrigation conditions were: non-irrigated (natural conditions) plot, irrigated plot with treated wastewater for two years, and irrigated plot with treated wastewater for five years. Infiltration measurements performed by the Hood infiltrometer have been used to estimate soil hydraulic properties useful to calibrate a simplified infiltration model widely used under ponding conditions, that were existing during the irrigation stage. Our simulations highlight the relevant effect of wastewater usage as an irrigation source in reducing cumulative infiltration and increasing overland flow as a result of modified hydraulic properties of soils characterized by a lower capacity of water drainage. These outcomes can provide important insights for the optimization of irrigation techniques in arid areas where the use of wastewater is often required due to the chronic shortage of freshwater.

Cartographical modelling of the ecological-resource potential of territory

1997 ◽  
pp. 53-55
Author(s):  
N. N. Lavrenko
Keyword(s):  
Forest Soil ◽  
Soil Water ◽  
Drainage Basin ◽  
Practical Experience ◽  
Scientific Activity ◽  
Water Drainage ◽  
System Transformation ◽  
Resource Potential ◽  
Natural Systems ◽  
New Ideas

The multifacetous scientific activity of Victor B. Sochava has found reflection in the numerous contributions-monographs and cartographical works issued by him and his pupils during the 70–80s. Now they are represent a base for development of modern trends of thematic mapping including ecological ones. Ecological mapping involves the spatial reflection of various natural and technogenic structures and their relationships. The cartographical modelling of territory potential is referred to this set of problems. Modelling in this aspect represents the désintégration of complex natural systems through classification and formalization into simple inner elements. Concerning the resources we have to bear in mind renewed and interconnected components of nature (forest, soil, water). This problem is subdivided into a number of tasks, namely: 1. determination of functions and characters of interconnected resources; 2. modelling of environmental and row material ecological functions of resources; 3. subdivision of space into territorial ecosystems; 4. classification, formalization, normalization and construction of the resource potential of ecosystems. System transformation of basic theoretical principles, formulated by V. Sochava, enables ecological map to design and to model various states of resource potential of territory. Solving the problem of cartographic modelling of ecological-resource potential of territory one have to seek for universal territorial ecosystem. Such unit is a drainage basin. The privilege to deal with ecosystem of water-drainage basin lays in possibility of limit determination, analysis of interconnected resources (forest, soil, water) by means of objective models or «black box» model. The new ideas appear: concrete drainage basin represents a spatialnon renewal recourse: results of management may be estimated on the ecosystem exit. At the same time theoretical and practical experience in the mapping of all nature environment and economy components can be applied to the drainage basin ecosystems.

Novel streaming potential and thermal sensor techniques for monitoring water and nutrient fluxes in the vadose zone

2011 ◽  
Author(s):  
Scott B. Jones ◽  
Shmuel P. Friedman ◽  
Gregory Communar
Keyword(s):  
Soil Water ◽  
Vadose Zone ◽  
Water Flux ◽  
Streaming Potential ◽  
Subsurface Water ◽  
Measurement Tool ◽  
Nutrient Fluxes ◽  
Thermal Sensor ◽  
Sensor Development ◽  
Soil Water Flux

The “Novel streaming potential (SP) and thermal sensor techniques for monitoring water and nutrient fluxes in the vadose zone” project ended Oct. 30, 2015, after an extension to complete travel and intellectual exchange of ideas and sensors. A significant component of this project was the development and testing of the Penta-needle Heat Pulse Probe (PHPP) in addition to testing of the streaming potential concept, both aimed at soil water flux determination. The PHPP was successfully completed and shown to provide soil water flux estimates down to 1 cm day⁻¹ with altered heat input and timing as well as use of larger heater needles. The PHPP was developed by Scott B. Jones at Utah State University with a plan to share sensors with Shmulik P. Friedman, the ARO collaborator. Delays in completion of the PHPP resulted in limited testing at USU and a late delivery of sensors (Sept. 2015) to Dr. Friedman. Two key aspects of the subsurface water flux sensor development that delayed the availability of the PHPP sensors were the addition of integrated electrical conductivity measurements (available in February 2015) and resolution of bugs in the microcontroller firmware (problems resolved in April 2015). Furthermore, testing of the streaming potential method with a wide variety of non-polarizable electrodes at both institutions was not successful as a practical measurement tool for water flux due to numerous sources of interference and the M.S. student in Israel terminated his program prematurely for personal reasons. In spite of these challenges, the project funded several undergraduate students building sensors and several master’s students and postdocs participating in theory and sensor development and testing. Four peer-reviewed journal articles have been published or submitted to date and six oral/poster presentations were also delivered by various authors associated with this project. We intend to continue testing the "new generation" PHPP probes at both USU and at the ARO resulting in several additional publications coming from this follow-on research. Furthermore, Jones is presently awaiting word on an internal grant application for commercialization of the PHPP at USU. 

Sign in / Sign up

Export Citation Format

Share Document