Results 181 to 190 of about 1,517 (200)

A stable and 40Ar/39Ar isotope study of a major thrust in the Helvetic nappes (Swiss Alps): Evidence for fluid flow and constraints on nappe kinematics

Geological Society of America Bulletin, 1995
Stable isotope and 40 Ar/ 39 Ar measurements were made on samples associated with a major tectonic discontinuity in the Helvetic Alps, the basal thrust of the Diablerets nappe (external zone of the Alpine Belt) in order to determine both the importance of fluids in this thrust zone and the timing of thrusting.
Anne Crespo-Blanc, Henri Masson, Zachary Sharp, Michael Cosca, Johannes Hunziker   +4 more
openaire   +1 more source

Prediction of oxygen content of nappe, transition, and skimming flow regimes in stepped-channel chutes

Journal of Environmental Engineering and Science, 2007
In a stepped-channel chute, the chute face is provided with a series of steps, from near the crest to the toe. Like many other high-speed flow configurations in hydraulic engineering, stepped-channel chute flows are characterized by the large amount of self-entrained air.
Baylar, Ahmet, Bagatur, Tamer, Emiroglu, M. Emin   +2 more
openaire   +1 more source

BRECCIAS DEPOSITED BY MASS FLOW IN THE BRECCIA NAPPE OF THE FRENCH PRE‐ALPS

Sedimentology, 1972
ABSTRACTIn the Lower Breccia Formation (Lower Jurassic), variations in thickness of the breccia sequence, in individual bed thickness, and in size of clasts suggest separate sources to the southwest and north of the study area. Large clasts, poor clast rounding, grading, and restriction of stratification towards the tops of individual beds indicate ...
openaire   +1 more source

Volume of fluid approach for modeling nappe flow over hydraulic structures

Physics of Fluids
Accurate simulation of the air–water interface of the overflowing sheet of water in weirs, referred to as nappe, is a challenging prospect from a computational fluid dynamics (CFD) modeling point of view. This study presents a systematic analysis of the widely used interface-capturing volume of fluid (VOF) technique for simulating nappe profiles, which
Tirtha Roy-Biswas, Pankaj Singh
openaire   +1 more source

Flow patterns in nappe flow regime down low-gradient stepped chutes. Reply by the authors

2009
To date, most studies on stepped spillways were conducted with flat horizontal steps in prismatic rectangular channels. The contribution provides some insight into the hydraulics of stepped spillways with pooled steps. Indeed the ddition of end sills or end walls at the downstream step end modifies substantially the flow pattern.
Toombes, Luke, Chanson, Hubert
openaire   +1 more source

Nappe and transition flows over stepped chutes

2004
openaire   +3 more sources

Evaluation of napp for the underpotential deposition of mercury on gold by flow injection coulometry

Analytical Chemistry, 1981
Timothy R. Lindstrom, Dennis C. Johnson
openaire   +1 more source

A Study of Nappe Oscillations and Effects of Aeration on Environmental Noise of Piano Key Weirs with Different Shapes

Iranian Journal of Science and Technology - Transactions of Civil Engineering, 2022
Javad Souri, Hassan Akbari, Seyed Ali Akbar Salehi Neyshabouri   +2 more
exaly  

Plunge pool dynamic pressures: a temporal analysis in the nappe flow case

Journal of Hydraulic Research/De Recherches Hydrauliques, 2015
Luis G Castillo, JOSÉ M Carrillo
exaly  

Neural networks- and neuro-fuzzy-based determination of influential parameters on energy dissipation over stepped spillways under nappe flow regime

ISH Journal of Hydraulic Engineering, 2017
Kiyoumars Roushangar, Farzin Salmasi, Jalāl Shiri   +2 more
exaly