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Dissertations / Theses on the topic 'HYDRUS-1D'

Author: Grafiati

Published: 4 June 2021

Last updated: 24 July 2025

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1

Nichols, William. "Modeling Performance of an Operational Urban Rain Garden Using HYDRUS-1D." Thesis, Villanova University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10811265.

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<p> Tools for predicting rain garden performance are limited, particularly for predicting seasonal performance. Changes in temperature cause changes in the viscosity of water, infiltration rates, and evapotranspiration rates. A variably-saturated soil model, HYDRUS-1D, was calibrated and validated using observed ponding depth and soil moisture data for the Philadelphia Zoo Rain Garden, owned and operated by the Philadelphia Water Department (PWD). Warm and cold seasons were simulated with typical meteorological data and temperature-adjusted saturated hydraulic conductivity values. Design-storm

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2

Inforsato, Leonardo. "Determinação das propriedades hidráulicas do solo pelo método de evaporação monitorada por atenuação de radiação gama." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-12112018-141229/.

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Modelos matemáticos são comumente utilizados no estudo da dinâmica da água no solo não-saturado. A principal equação para se quantificar esta dinâmica é a equação diferencial de Richards. Sua solução direta é impossível na maioria dos casos, necessitando de métodos numéricos, dos quais se destaca a utilização das funções de condutividade e de retenção de água de Van Genuchten - Mualem para obtenção da solução numérica. Diante disto, o objetivo deste trabalho foi apresentar um novo método para a obtenção dos parâmetros de Van Genuchten - Mualem, que utiliza a modelagem inversa de dados de teore

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3

Atmosudirdjo, Aryani. "Simulation of Leachate Generation from a Waste Rock Dump in Kiruna Using HYDRUS-1D." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-379225.

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The percolation of water through waste rock dumps at mine sites can lead to the production of a leachate with high concentrations of dissolved metals, sulfate and nitrogen compounds. It is important to understand how water flows in waste rock dumps in order to predict the environmental impact of this leachate on recipients. The dynamics of percolation and leachate discharge are controlled by climatological conditions at the site, where relatively large flows in northern Sweden correspond to snowmelt during late Spring. Rock dumps are often tens of meters in height, resulting in an unsaturated

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4

Pinho, Roque Emmanuel da Costa de. "Teores de água e solutos no solo: desempenho e sensibilidade do modelo Hydrus-1D." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11131/tde-25022010-154643/.

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A preocupação com o destino de produtos químicos e água, aplicados ao solo, tem motivado vários pesquisadores a desenvolverem e aplicarem modelos teóricos, objetivando descrever os processos físicos envolvidos no transporte desses produtos no perfil do solo. Nesse sentido, a presente pesquisa teve como objetivo a aplicação do modelo Hydrus-1D para simulação do movimento da água e dos íons nitrato e potássio, em condições de laboratório, utilizando-se para tal colunas segmentadas preenchidas com dois tipos de solo não-saturado (Latossolo Vermelho Amarelo e Nitossolo Vermelho), bem como avaliar

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5

Santos, Rafaelly Suzanye da Silva. "Simulação da dinâmica do íon potássio pelo modelo HYDRUS-1D em condições de solo salino." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-06012015-110030/.

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A demanda alimentar vem aumentando de acordo com o crescimento populacional e com isso há uma necessidade de que as práticas agrícolas tornem-se cada vez mais intensas e tecnificadas, mediante o incremento, entre outros, da utilização de insumos químicos. Porém, uma vez aplicados de maneira desorganizada, sem a devida preocupação com os possíveis impactos aos recursos naturais, tais produtos podem vir a provocar danos ao solo, contaminação de águas subterrâneas (mediante sua lixiviação) e em alguns casos, podem ser responsáveis pelo aumento da salinidade em alguns solos da região do semiárido

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6

Vogel, Mie. "Effects of Model Spin-Up on Simulated Recharge Using the Hydrus-1D Vadose Zone Model." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-385590.

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Groundwater is a crucial part of the hydrological cycle and is an important source for drinking water, irrigation and industry, particularly during droughts. With climate change, the hydrological variability is predicted to increase, making predictions for recharge and groundwater storage even more important to implement and to maintain sustainable water use. This study examines the importance of model spin-up in simulating recharge using the Hydrus-1D computer model. The focus is on two previously made Hydrus-1D models that represent end members in climate and hydrology; one which is a natura

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7

Tyaquiçã, da Silva Santos Pedro. "Balanço hídrico em teto com cobertura vegetal no semiárido pernambucano." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/5886.

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Made available in DSpace on 2014-06-12T17:42:16Z (GMT). No. of bitstreams: 2 arquivo7111_1.pdf: 1388033 bytes, checksum: 645508c7ef101ae31fed17e866992644 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011<br>Faculdade de Amparo à Ciência e Tecnologia do Estado de Pernambuco<br>Na atualidade, metade da população mundial reside nos grandes centros urbanos. Grande parcela desse crescimento tem ocorrido em países em desenvolvimento. No Brasil, já se verifica um contingente de cerca de 80% da população residindo nas áreas urbanas. Neste cr

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8

Mallmann, Fábio Joel Kochem. "Modelagem na transferência de cobre e zinco em solos contaminados por dejetos líquidos de suínos." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/3345.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Soils subjected to successive pig slurry (PS) amendments present zinc (Zn) and copper (Cu) increases, mostly on soil surface layer. The continuous application of PS causes accumulation of these heavy metals (HM) in soil, increasing risks for environmental contamination. Therefore, development of methods to estimate Zn and Cu accumulation in surface layer and their movement in soil is very important for the management planning of PS and of the agricultural soils amended with these residues. The main objective of this work was to mod

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9

Sun, Hongyan. "Characterizing Water and Nitrogen Dynamics in Urban/Suburban Landscapes." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1073.

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This research investigated the water use of different plant types in urban landscapes, nitrogen (N) and water transport in turf, and potential N leaching from urban landscapes to ground water. In the first study, three landscape treatments integrating different types of plants—woody, herbaceous perennial, turf—and putative water use classifications—Mesic, Mixed, Xeric—were grown in large drainage lysimeters. Each landscape plot was divided into woody, turf, and herbaceous perennial plant hydrozones and irrigated for optimum water status over two years, with water use measured using a water bal

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10

Parajuli, Kshitij. "Advancing Methods to Quantify Actual Evapotranspiration in Stony Soil Ecosystems." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7242.

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Water is undeniably among the most important natural resources and the most critical in semi-arid regions like the Intermountain West of the United States. Such regions are characterized by low precipitation, the majority of which is transferred to the atmosphere from the soil and vegetation as evapotranspiration (ET). Quantification of ET is thus crucial for understanding the balance of water within the region, which is important for efficiently planning the available water resources. This study was motivated towards advancing the estimation of actual ET (ETA) in mountain ecosystems, where th

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11

Zwirtes, Anderson Luiz. "Medição e simulação da temperatura e conteúdo de água em argissolo sob resíduos de aveia." Universidade Federal de Santa Maria, 2017. http://repositorio.ufsm.br/handle/1/13227.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>This research was conducted with the objective of studying the dynamics of soil temperature and water content as a function of the different amounts of black oat residue (Avena sativa Schreb.) in the soil cover, through existing relationships with meteorological variables, as well as the simulation of these dynamics using Hydrus-1D. The experiment was carried out in an Argissolo Vermelho Distrófico arênico (Rhodic Paleudalf) in Santa Maria - RS. The treatments consisted of the use of 3, 6 and 9 Mg ha-1 of oat straw in soil

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12

Jiang, Shuang. "Bacterial leaching from dairy shed effluent applied to a fine sandy loam under flood and spray irrigations." Lincoln University, 2008. http://hdl.handle.net/10182/668.

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Land application of wastes has become increasingly popular, to promote nutrient recycling and environmental protection, with soil functioning as a partial barrier between wastes and groundwater. Dairy shed effluent (DSE), may contain a wide variety of pathogenic micro-organisms, including bacteria (e.g. Salmonella paratyphyi, Escherichia coli. and Campylobacter), protozoa and viruses. Groundwater pathogen contamination resulting from land-applied DSE is drawing more attention with the intensified development of the dairy farm industry in New Zealand. The purpose of this research was to investi

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13

Meyer, Nathaniel Andrew. "Simulating the accumulation of calcite in soils using the soil hydraulic model HYDRUS-1D." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-08-6255.

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The distributions of calcite rich horizons within dryland soils are commonly used as paleoclimate proxies. Comprehensive conceptual and mathematical models of calcite accumulation in soils are required to accurately interpret and calibrate these proxies. A conceptual model for calcite accumulation is already well established: As water percolates through a soil, it dissolves minerals, such as calcite, transporting the soluble minerals downward. As soil water is removed by evaporation and transpiration, the water solution becomes supersaturated resulting in precipitation of calcite at depth. The

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14

Li, Yi-Hsien, and 李奕賢. "Application of HYDRUS-1D Model to Estimate Parameters of Soil Water Characteristic Curve Parameters." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/09696158260471921317.

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碩士<br>國立中央大學<br>應用地質研究所<br>98<br>Infiltration test is an important technique to investigate the hydrologic properties in soils, while the unsaturated flow numerical models can be an efficient tool to understand flow mechanism when the physical properties and conditions of soils are changed. This study employs HYDRUS-1D model and self developed Levenberg-Marquardt algorithm to inversely estimate parameters in the van Genuchten formula. The developed LM model was tested based on the synthetically generated data from HYDRUS-1D model. Additionally, the initial guesses of soil parameters in LM mode

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15

Hsu, Kan-Sheng, and 許堪昇. "Soil Temperature and Volumetric Water Content Prediction in Greenhouse by Using Hydrus-1D, ICON and Random Forest Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p6tjuv.

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碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>107<br>Due to the impact of climate change and the rising frequency of extreme weather have caused the problem of food security and water resources. Precision agriculture in greenhouses is gradually becoming a trend because it is less affected by external environmental factors and easier to manage. In order to effectively improve the utilization of water resources and reduce wasting water, this study planted cherry tomatoes in the greenhouse and installed monitoring instruments to collect data. The soil temperature and volumetric water content during tomato grow

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16

Adhikari, Bishwodeep. "The Contributions of Soil Moisture and Groundwater to Non-Rainfall Water Formation in the Namib Desert." Thesis, 2019. http://hdl.handle.net/1805/20533.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Non-rainfall waters such as fog and dew are considered as important source of water in drylands, and the knowledge of possible sources of its formation is very important to make future predictions. Prior studies have suggested the presence of radiation fog in drylands; however, its formation mechanism still remains unclear. There have been earlier studies on the effects of fog on soil moisture dynamics and groundwater recharge. On the contrary, no research has yet been conducted to understand the contribution of soil moisture and gro

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