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Saturation Dependence of Non-Fickian Transport in Porous Media
期刊论文
WATER RESOURCES RESEARCH, 2019, 55 (2) : 1153-1166
作者:
Hasan, Sharul
;
Joekar-Niasar, Vahid
;
Karadimitriou, Nikolaos K.
;
Sahimi, Muhammad
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2019/11/26
dispersion
unsaturated soil
non-Fickian transport
stagnant saturation
relative permeability
pore network model
The Rangeland Hydrology and Erosion Model: A Dynamic Approach for Predicting Soil Loss on Rangelands
期刊论文
WATER RESOURCES RESEARCH, 2017, 53 (11)
作者:
Hernandez, Mariano
;
Nearing, Mark A.
;
Al-Hamdan, Osama Z.
;
Pierson, Frederick B.
;
Armendariz, Gerardo
;
Weltz, Mark A.
;
Spaeth, Kenneth E.
;
Williams, C. Jason
;
Nouwakpo, Sayjro K.
;
Goodrich, David C.
;
Unkrich, Carl L.
;
Nichols, Mary H.
;
Collins, Chandra D. Holifield
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2019/04/09
rangelands
soil erosion models
soil conservation
ecological sites
sediment transport
Large uncertainty in permafrost carbon stocks due to hillslope soil deposits
期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (12)
作者:
Shelef, Eitan
;
Rowland, Joel C.
;
Wilson, Cathy J.
;
Hilley, G. E.
;
Mishra, Umakant
;
Altmann, Garrett L.
;
Ping, Chien-Lu
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2019/04/09
hillslope
soil-Carbon
permafrost
soil-transport
Improving degradation of emerging organic compounds by applying chaotic advection in Managed Aquifer Recharge in randomly heterogeneous porous media
期刊论文
WATER RESOURCES RESEARCH, 2017, 53 (5)
作者:
Rodriguez-Escales, P.
;
Fernandez-Garcia, D.
;
Drechsel, J.
;
Folch, A.
;
Sanchez-Vila, X.
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  |  
浏览/下载:3/0
  |  
提交时间:2019/04/09
chaotic flow
soil-aquifer treatment
reactive transport
mixing
redox fringes
Colloid-Facilitated Transport of Cations in an Unsaturated Fractured Soil Under Transient Conditions
科技报告
来源:US Department of Energy (DOE). 出版年: 2015
作者:
Ryan, Joseph
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浏览/下载:3/0
  |  
提交时间:2019/04/05
colloid
soil
contaminant
transport
Tonopah Test Range Air Monitoring: CY2013 Meteorological, Radiological, and Airborne Particulate Observations
科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:
Mizell, Steve A
;
Nikolich, George
;
Shadel, Craig
;
McCurdy, Greg
;
Etyemezian, Vicken
;
Miller, Julianne J
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浏览/下载:9/0
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提交时间:2019/04/05
In 1963
the U.S. Department of Energy (DOE) (formerly the Atomic Energy Commission [AEC])
implemented Operation Roller Coaster on the Tonopah Test Range (TTR) and an adjacent area of the Nevada Test and Training Range (NTTR) (formerly the Nellis Air Force Range). This test resulted in radionuclide-contaminated soils at Clean Slate I
II
and III. This report documents observations made during on-going monitoring of radiological
meteorological
and dust conditions at stations installed adjacent to Clean Slate I and Clean Slate III and at the TTR Range Operations Control center. The primary objective of the monitoring effort is to determine if winds blowing across the Clean Slate sites are transporting particles of radionuclide-contaminated soils beyond both the physical and administrative boundaries of the sites. Results for the calendar year (CY) 2013 monitoring include: (1) the gross alpha and gross beta values from the monitoring stations are approximately equivalent to the highest values observed during the CY2012 reporting at the surrounding Community Environmental Monitoring Program (CEMP) stations (this was the latest documented data available at the time of this writing)
(2) only naturally occurring radionuclides were identified in the gamma spectral analyses
(3) the ambient gamma radiation measurements indicate that the average annual gamma exposure is similar at all three monitoring stations and periodic intervals of increased gamma values appear to be associated with storm fronts passing through the area
and (4) the concentrations of both resuspended dust and saltated sand particles generally increase with increasing wind speed. However
differences in the observed dust concentrations are likely due to differences in the soil characteristics immediately adjacent to the monitoring stations. Neither the resuspended particulate radiological analyses nor the ambient gamma radiation measurements suggest wind transport of radionuclide-contaminated soils.
Project 57 Air Monitoring Annual Report - Fiscal Year 2013 (October 1, 2012 to September 30, 2013)
科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:
Miller, Julianne J.
;
McCurdy, Greg
;
Mizell, Steve A
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浏览/下载:8/0
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提交时间:2019/04/05
The U.S. Department of Energy (DOE)
National Nuclear Security Administration
Nevada Field Office (NNSA/NFO) is currently working to achieve regulatory closure of radionuclide-contaminated Soils sites under its auspices. Corrective Action Unit (CAU) 415
Project 57 No. 1 Plutonium Dispersion Site is located in Emigrant Valley
Nevada
on Range 4808A of the Nevada Test and Training Range (NTTR)
and consists of one Corrective Action Site (CAS): NAFR-23-02
Pu Contaminated Soil. Closure plans being developed for the CAUs both on and off of the Nevada National Security Site (NNSS) may include postclosure monitoring for the possible release of radioactive contaminants. Determining the potential for transport of radionuclide-contaminated soils under ambient climatic conditions will facilitate an appropriate closure design and postclosure monitoring program. The DOE has authorized the Desert Research Institute (DRI) to conduct field assessments of potential transport of radionuclide-contaminated soil from the Project 57 site during ambient wind events. The assessment is intended to provide site-specific information on meteorological conditions that result in airborne soil particle redistribution
as well as determine which
if any
radiological contaminants may be entrained with the soil particles and estimate their concentrations.