EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Parameter estimation for determining hydraulic properties of a fine sand from transient flow measurements


, : Parameter estimation for determining hydraulic properties of a fine sand from transient flow measurements. Water resources research 32(7): 1965-1974

A cone penetrometer method for measuring hydraulic conductivity of unsaturated soils at depth is under development. Successful advancement of this method hinges on using parameter estimation to obtain hydraulic parameter values from pore water pressure and flow rate data. A finite element model is employed to predict flow responses, and objective functions describe differences between "true" and simulated responses. Contour plots in parameter space show the relative sensitivity of objective functions to field-saturated hydraulic conductivity, Kfs, field-saturated moisture content, theta(fs), and the van Genuchten hydraulic parameters, alpha and n. Principal curvatures and directions in parameter space describe the nature of objective functions near "true" parameter values. An objective function based on flow rate and pore water pressures does not provide better parameter sensitivity than one based on pore water pressures alone. It appears possible to obtain estimates of Kfs and alpha but unlikely that the other parameters will be identifiable.

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 002914987

DOI: 10.1029/96wr00894

PDF Full Text: Parameter estimation for determining hydraulic properties of a fine sand from transient flow measurements


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Gatot, C.; Chou, A.Cc.; Howe, T.S.; Yeo, W.; Chong, H.C.; Koh, J.Sb., 2016: Predictors for rehabilitation outcome in Asian geriatric hip fracture patients. To identify predictors for rehabilitation outcome in Asian geriatric hip fracture patients. Records of 153 consecutive Asian patients aged 61 to 99 years who underwent surgery for hip fracture and were followed up for at least one year were review...

Akbay, E.; Cayan, S.; Doruk, E.; Duce, M.N.; Bozlu, M., 2000: The prevalence of varicocele and varicocele-related testicular atrophy in Turkish children and adolescents. To determine the prevalence and site of varicocele and varicocele-related testicular atrophy in children and adolescents. The study included 4052 boys aged of 2-19 years, divided into four age groups; the findings of a physical examination, any te...

Suh, D.; Tak, H.; Choi, S-jin.; Kim, T-il., 2015: Permeability- and Surface-Energy-Tunable Polyurethane Acrylate Molds for Capillary Force Lithography. A permeability- and surface-energy-controllable polyurethane acrylate (PUA) mold, a "capillary-force material (CFM)" mold, is introduced for capillary-force lithography (CFL). In CFL, the surface energy and gas permeability of the mold a...

Rabinowitz Nitzan; Steinberg David M., 1998: Aftershock decay of three recent strong earthquakes in the Levant. Aftershock sequences are studied from three recent strong earthquakes in the Levant: the M (sub w) = 7.1 earthquake of 22 November 1995 and the M (sub L) = 5.8 earthquake of 3 August 1993, both in the Gulf of Aqaba, and the M (sub W) = 6.8 earthqu...

Babin, E.; Lemarchand, V.; Moreau, S.; Goullet de Rugy, M.; Valdazo, Aé.; Bequignon, A., 2003: Failure of antibiotic therapy in acute otitis media. The aim of this retrospective study was to determine the possible causes of failure of antibiotic therapy in children with acute otitis media (AOM). Thirty-nine samples of middle-ear fluid were obtained by myringotomy from 31 children suffering fr...

Shaak, T.V.; Dzhambulatov, K.U., 1972: Technic of extraperitoneal resection of the sigmoid. Vestnik Khirurgii Imeni I. I. Grekova 108(5): 41-45

Sobczy, D.P.; van Grondelle, J.; de Jong, A.M.; de Voigt, M.J.A.; van Santen, R.A., 2002: Production of chemically pure gaseous [13N]NH3 pulses for PEP studies using a modified DeVarda reduction. A fast and reproducible production method for pure gaseous [13N]NH3 pulses has been developed. 13N was produced by irradiation of water with 500 nA of 16 MeV protons via the 16O(p,alpha)13N reaction. A mixture of DeVarda's alloy and NaOH was...

Ettinger N.A.; Trulock E.P.; Cooper J.D.; Wash Univ Lung Transp Group (Usa), 1990: Transbronchial lung biopsy for the diagnosis of rejection and infection after lung transplantation. American Review of Respiratory Disease 141(4 PART 2): A408

Culley, M.; Driver, P., 1972: The crawfish industry of lreland. Fishing News International, 114: 32-36

Ambrosius J.E., 1970: Effects of di ethyl stilbestrol plus methyl testosterone and tylosin on swine performance. Journal Of Animal Science: 1021