Soil thermal diffusivity estimated from data of soil temperature and single soil component properties

Lier, Quirijn de Jong van; Durigon, Angélica

doi:10.1590/s0100-06832013000100011

Cited by 17 publications

(14 citation statements)

References 22 publications

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“…Equation (4) infers an exponential dampening of the temperature amplitude with increasing depth 19,63 :where A is amplitude of the temperature wave at depth z1 or z2 .…”

Section: Methodsmentioning

confidence: 99%

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Controls of soil organic matter on soil thermal dynamics in the northern high latitudes

et al. 2019

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Permafrost warming and potential soil carbon (SOC) release after thawing may amplify climate change, yet model estimates of present-day and future permafrost extent vary widely, partly due to uncertainties in simulated soil temperature. Here, we derive thermal diffusivity, a key parameter in the soil thermal regime, from depth-specific measurements of monthly soil temperature at about 200 sites in the high latitude regions. We find that, among the tested soil properties including SOC, soil texture, bulk density, and soil moisture, SOC is the dominant factor controlling the variability of diffusivity among sites. Analysis of the CMIP5 model outputs reveals that the parameterization of thermal diffusivity drives the differences in simulated present-day permafrost extent among these models. The strong SOC-thermics coupling is crucial for projecting future permafrost dynamics, since the response of soil temperature and permafrost area to a rising air temperature would be impacted by potential changes in SOC.

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“…Equation (4) infers an exponential dampening of the temperature amplitude with increasing depth 19,63 :where A is amplitude of the temperature wave at depth z1 or z2 .…”

Section: Methodsmentioning

confidence: 99%

“…Accordingly, D can be derived from temperature amplitudes concurrently observed at two soil depths. This equation has been used to calculate D and its influence factors in in situ studies 19–21 , but these studies were limited to a few sites. A large-scale application of this equation has been applied by ref.…”

Section: Introductionmentioning

confidence: 99%

Controls of soil organic matter on soil thermal dynamics in the northern high latitudes

et al. 2019

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“…Gasparim et al (2005) também verificaram redução da amplitude térmica do solo com cobertura, em que a amplitude térmica do solo sem cobertura vegetal foi de 20 ºC, enquanto para o solo com resíduos de aveia preta o valor foi reduzido para 10 ºC. Os solos do tipo argiloso possuem uma condutividade térmica maior, motivo pelo qual apresentam as menores amplitudes térmicas, principalmente em camadas mais profundas (Jong van Lier & Durigon, 2013;Carneiro et al, 2014).…”

Section: Resultsunclassified

“…Solos com maiores porcentagens de argila em sua composição, como no Latossolo presente neste estudo possuem, como característica, elevado número de microporos, os quais têm maior capacidade de reter água em seu interior, apresentando assim maior umidade o que acarreta em aumento na difusividade térmica e assim influenciando na temperatura do solo (Jong van Lier & Durigon, 2013;Carneiro et al, 2014;Roxy et al, 2014), fator importante que explica como a presença de água no solo interfere na temperatura do mesmo.…”

Section: Resultsunclassified

Temperatura e umidade do solo em função do uso de cobertura morta no cultivo de milho

et al. 2020

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Objetivou-se avaliar a influência de diferentes quantidades de cobertura vegetal morta sobre a temperatura e a umidade do solo cultivado com milho, em Tangará da Serra, MT. O experimento foi realizado no ano de 2016, na área experimental da Universidade do Estado de Mato Grosso (UNEMAT). Analisou-se a resposta da temperatura do solo em clima tropical com estação seca no inverno (Aw segundo Köppen), em um Latossolo Vermelho distroférrico na região sudoeste do estado de Mato Grosso. Foram avaliados três tratamentos com duas repetições, sendo: sem cobertura vegetal; cobertura com 4 t ha-1 de massa seca de braquiária e cobertura com 8 t ha-1 de massa seca de braquiária. A temperatura foi monitorada através de sensores termopar do tipo K, instalados nas profundidades de 5-10 e 20-25 cm e para a umidade utilizou-se sondas de reflectometria no domínio do tempo (TDR), instalados a 30 cm de profundidade. A temperatura do solo foi reduzida com o uso da palhada de braquiária, principalmente na fase inicial de desenvolvimento da planta. As maiores variações na temperatura ocorreram na profundidade de 5-10 cm. O solo coberto com 8 t ha-1 reduziu a temperatura máxima do solo em até 2,9 ºC, além disso, a cobertura do solo proporcionou a redução da amplitude térmica no solo de 5,3 e 5,8 ºC, com 4 e 8 t ha-1 , respectivamente. A umidade do solo foi maior no cultivo de milho com cobertura de 8 t ha-1 de braquiária. Palavras-chave adicionais: amplitude térmica; reflectometria no domínio do tempo; termopar; Zea mays L.

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“…TDS data was obtained from U.S. Geological Survey National Produced Waters Geochemical Database[53]. No data were found for thermal diffusivity of the formation; a constant value of 3.13E-7 m 2 /s, reported by Jong van Lier and Durigon[54], was used.…”

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confidence: 99%

Modeling geothermal energy efficiency from abandoned oil and gas wells to desalinate produced water

2017

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This study investigated the use of low temperature geothermal resources to convert salty produced water into a freshwater resource. The research retrofits soon-to-be-shut-down oil and gas wells as geothermal wells, simultaneously overcoming drilling costs and scale formation by using a freshwater closed loop system for thermal energy delivery. Heat transfer modeling was combined with water treatment thermodynamics to develop a predictive tool that can be used to estimate daily deliverable treated water. Results indicated that the developed model was most sensitive to well depth, geothermal gradient, and total dissolved solids in the produced water.Results also indicated that a 4,000 m deep well with a geothermal gradient of 0.05 º C/m can successfully treat produced water with as high as 170,000 mg/L total dissolved solids and still deliver almost 600,000 L of clean water per day. An illustrative demonstration indicated that in the Eagle Ford Shale in Texas, more than 60% of the drilled basin area can deliver at least half a million liters of treated water daily under ideal conditions. This is particularly meaningful as Texas experiences extended periods of drought and the treated produced water would represent a new and resilient source of water.

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Soil thermal diffusivity estimated from data of soil temperature and single soil component properties

Cited by 17 publications

References 22 publications

Controls of soil organic matter on soil thermal dynamics in the northern high latitudes

Controls of soil organic matter on soil thermal dynamics in the northern high latitudes

Temperatura e umidade do solo em função do uso de cobertura morta no cultivo de milho

Modeling geothermal energy efficiency from abandoned oil and gas wells to desalinate produced water

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