... size distribution of the soil matrix. Results indicated a multimodal character of preferential flow in this soil. In the case of the Haplic Cambisol, the dye pattern studied at the microscale was mostly affected by fractures and the size and shape of mineral grains. Water flow and contaminant...

... curve (BTC) shape using a data set of 115 tracer BTCs sampled from the literature. We tested the shape measures for sensitivity to deconvolution approaches based on Gaussian, lognormal, and gamma probability density functions and the mobile–immobile model. Furthermore, we evaluated collinearities among...

... calculated according to the uniformly minimum variance unbiased estimator method of Land ( Parkin and Robinson, 1992 ). Confidence limits Log transformed data Cylinder diameter
 and arrangement Cross-sectional
 area Ratio of area to
 20-cm cylinder Shape n Mean...

... grain shape, this, of course, deviates considerably from their actual dimensions. The present study reexamines sieving, and reconfirms that this approach sorts the grains by shape as well as by size. The grain's intermediate axial diameter is the main controlling factor in its passage through sieve...

...A. K. Chaudhuri; A. B. Pal Abstract Shape analysis of a large number of pebbles from a 60 km stretch of the basal Raghunathpalli conglomerate in the Gangpur Group in eastern India, indicates that a flattening strain on originally constricted pebbles during the earliest folding episode gave rise...

...R. Ehrlich; P. J. Brown; J. M. Yarus; R. S. Przygocki Abstract Measurement of thousands of quartz particle shapes from a variety of modern and ancient settings has led to the following conclusions concerning the origin and nature of shape frequency distributions: 1) Quartz shape frequency...

... analytical expressions and combined with an empirical relation between wave energy, grain size and beach slope to construct synthetic beach forms. The plan shapes predicted by theory are closely fitted by the logarithmic spiral and compare well with natural beaches. The model shows the interplay...

...Mel R. Stauffer; A. I. Burnett Abstract The shape of the strain ellipsoid for an aggregate of clasts with initially isotropic fabric can be estimated from measurements made while viewing the clasts along the plunges of at least two of the axes of strain, even though the outcrop faces...

... grains varied widely in both size and shape. All samples obeyed Archie's law, FF = n (super -m) (where FF is the formation factor and n is the porosity) including mixtures of two differently shaped particle types.The exponent m was dependent on the shape of the particles, increasing as they became less...

... conditions is highly unusual. Individual heads of mushroom-shaped colonies coalesce to differing degrees, probably in response to local variations in wave energies. Individual heads are circular to oval in plan that average 0.9 m in diameter, but may be as large as 2.0 m in diameter. Three growth modes...

... from hydrostatic or artesian pressures on a slope, from excess pore-water pressures due to rain or thawing ice lenses, or from loading by animals or man.The shapes of mudboils are controlled principally by slope, the steeper the slope, the more elongate the boil; the nature of their borders depends...

... that is mixed owing to contributions from both ancestral deltas. Analysis of variance, correlation, and regression methods indicate that heavy-mineral variations in each sedimentary province have been significantly influenced by hydraulic fractionation by size, shape, and density, and by a selective chemical...

...R. J. Vinopal; A. H. Coogan Abstract An average grain volume for carbonate sands composed of various shaped particles has remained undetermined owing to the unpredictable effect of different fossil particle shapes on grain volume distribution. In this study, grain volume was measured for 250 single...

... pattern of reeflike Winnipegosis carbonate mounds. Although the carbonate mounds have been known for many years as a result of widely spaced drill holes, little was known of their size, shape, or distribution. The mounds are much smaller, more irregular, and more numerous than indicated in some earlier...