Distribution of NBS, USGS and CCRMP Reference Material Data in the Literature (1951-1985)     

Ernest S. GLADNEY  Iwan ROELANDTS 《Geostandards and Geoanalytical Research》1987,11(2):133-142

Publication patterns of NBS, USGS and CCRMP reference materials data are traced over the past 35 years by literature source, analytical methods employed, and constituents measured.  相似文献   

Determination of Elemental Composition of NBS SRM Coals Via Automated Neutron Activation Analysis     

Ernest S. GLADNEY  Sammy R. GARCIA  Janet S. NEWLIN 《Geostandards and Geoanalytical Research》1986,10(1):77-80

An automated multidetector system for instrumental thermal neutron activation of geological and environmental materials was used for the measurement of up to 34 elements in six National Bureau of Standards Standard Reference Material coal samples. Good agreement was achieved with NBS certified and literature consensus values.  相似文献   

Impact of Hurricane Allen on the morphology of Padre Island,Texas     

John R. Giardino  Philip E. Isett  Ernest B. Fish 《Environmental Geology》1984,6(1):39-43

During the night of August 9, 1980, Hurricane Allen crossed Padre Island, Texas, causing a variety of morphological changes The extent and form of changes appear to have been influenced by man-made structures on the more heavily developed portions of the island Future development and planning activities must recognize the dynamic nature of a barrier island subject to periodic hurricane influence in order to minimize property damage Research activities were partially funded by the Graduate School, Texas Tech University College of Agricultural Sciences Publication T-6-137  相似文献   

Prediction of the water balance of two soil cover systems     

Celestina Adu-Wusu  Ernest K. Yanful  Lisa Lanteigne  Mike O’Kane 《Geotechnical and Geological Engineering》2007,25(2):215-237

Soil cover systems are widely used for containment of municipal solid waste, hazardous and mine waste, with the objective of limiting the ingress of precipitation and oxygen. The ability to predict their long-term performance is crucial, as their failure would result in the release of contaminants to the environment. However, monitoring covers over the long term to derive the information needed to aid in design is impractical and there are no large-scale covers that have been in use for a long enough period to generate the data needed. Numerical models have been particularly useful as design tools. To improve their reliability these models may be calibrated to field data and then used to make long-term predictions of cover performance. The field performance of two resistive test soil covers on a 20% sloping waste rock platform is predicted using the two-dimensional soil–atmosphere model Vadose/W. Input data for the model included soil, climate and vegetation data obtained either in the field or laboratory. Model results were compared to field data to assess the validity of the program. The model reasonably simulated field response patterns for soil water storage and suction. Divergence between field performance data and model predictions were significantly influenced by snowmelt, interflow and flow through preferential pathways.  相似文献   

Excitation of an electrostatic wave by a cold electron current sheet of finite thickness     

K.S. Hwang  Ernest G. Fontheim  R.S.B. Ong 《Planetary and Space Science》1983,31(3):285-293

Electrostatic waves excited by a field-aligned electron current sheet of finite thickness are investigated. The finite width of the current sheet gives rise to boundary conditions to be satisfied at the sheet edge. This results in a restriction to the number of modes which may be driven unstable. Ducted and evanescent mode solutions are obtained. It is shown that the finite thickness of the current sheet partially stabilizes the system and contributes to the coherence of the excited waves.  相似文献   

The possibility of supersonic plasma flow in a collapsing post-sunset ionosphere     

Ernest G. Fontheim 《Planetary and Space Science》1972

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Characterizing aquatic sediment-oil aggregates using in situ instruments     

Sterling MC  Bonner JS  Ernest AN  Page CA  Autenrieth RL 《Marine pollution bulletin》2004,48(5-6):533-542

The effects of emulsified crude oil and salinity (15, 30 per thousand ) on the steady state aggregate volume distributions and fractal dimensions were determined for a range of mean velocity gradients, (G(m) =5-50 s(-1)). Aggregation was performed in a 40-L cylindrical tank with a 4-blade paddle mixer. Three-dimensional fractal dimensions (D3) and volume distributions were determined using a procedure integrating data from an electrozone and an in situ light scattering instrument. Two-dimensional fractal dimensions (D2) and derived volume distributions were determined using a recently developed submersible flow cytometer equipped with a digital camera and image analysis software. For latex beads or emulsified crude oil systems, the above listed instruments yielded consistent size distributions and fractal dimensions (D2=1.92 +/- 0.16, D3=2.94 +/- 0.12). Mean volume aggregate diameters determined using the FlowCAM were consistently larger that those determined using the LISST-100 or Coulter Multisizer due to aggregate orientations during measurements. With increasing G(m) values, all colloidal aggregates showed increasing D3 values due to reduced aggregate length. Because of the compactness of all the aggregates (D3 >2), D2 values remained constant at 2. Neither salinity nor sediment type significantly affected D2 values calculated for sediment-crude oil aggregates. However, clay-oil aggregates showed higher D3 values than clay aggregates. This suggests that colloidal oil and mixing shear are the more dominant factors influencing aggregate morphology in nearshore waters. Overall, the data suggests that the analysis methods provide consistent size distribution results. However, because of the shear and salinity of coastal waters, resulting aggregates are too compact to estimate their D3 values using image analysis alone.  相似文献   

Faunal horizons of the Barton Beds in Hampshire     

Ernest St. John Burton 《Proceedings of the Geologists' Association. Geologists' Association》1933,44(2):131-167

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Zonal and meridional air currents in the stratosphere over Europe     

Ernest Hovmöller 《Pure and Applied Geophysics》1950,17(3-4):112-120

Wind observations in the stratosphere above the British isles are treated statistically, with special regard to the variations of zonal and meridional wind components with height and during the year.

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Zusammenfassung Windbeobachtungen aus der Stratosphäre über den Britischen Inseln sind statistisch bearbeitet worden, wobei das Hauptgewicht darauf gelegt wurde, das Verhalten der zonalen und meridionalen Windkomponente im Jahresgang und als Funktion der Höhe zu beschreiben und diskutieren.

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CUAHSI Web Services for Ground Water Data Retrieval     

Tim Whiteaker  Ernest To 《Ground water》2008,46(1):6-9

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