Results 41 to 50 of about 1,517 (200)

New Drain Spacing Formulas Using the Variational Iteration Method

Irrigation and Drainage, EarlyView.
ABSTRACT In this study, the drain spacing is computed using the variational iteration method (VIM) to the linearized Boussinesq equation. By applying at most two iterations of the VIM method under three different initial condition scenarios, three equations for drain spacing calculation were derived. These equations predict values of drain spacing that
George Kargas, Leonidas Mindrinos, Paraskevi Londra   +2 more
wiley   +1 more source

Oxygen Transfer and Energy Dissipation by Nappe and Skimming Flow over Stepped Weir Structure [PDF]

Advances in Computer Science Research, 2016
Oxygen transfer and the energy dissipation by the flow types at the stepped weir structure were performed through hydraulic experiments. Nappe flow occurs at low flow rates and for relatively small step slope. Dominant features of an air pocket, nappe impact and subsequent hydraulic jump occurs. At larger flow rates, skimming flow occurs with formation
Min-Jee Li, Sunjung Kim, Jinhong Kim
openaire   +1 more source

Reaction‐Driven Development of Fine‐Grained Plagioclase Networks Influences the Rheology of the Crust in the Bergen Arcs, Norway

Journal of Metamorphic Geology, EarlyView.
ABSTRACT In the middle to lower continental crust, mineral reactions can play a key role in controlling rheological behaviour by generating fine‐grained, mechanically weak domains. In granulite‐facies rocks from Krossøy (Bergen Arcs, Norway), we document how garnet breakdown produced interconnected networks of orthopyroxene + plagioclase ± spinel that ...
Lorena H. Filiberto, Håkon Austrheim, José Alberto Padrón‐Navarta, Andrew Putnis, Christine V. Putnis   +4 more
wiley   +1 more source

Strain Analysis and Kinematics of Deformation of the Tectonic Nappe Pile in Olympos-Ossa Mountainous Area: Implication for the Exhumation History of the HP/LT Ampelakia Unit and the Olympos-Ossa Tectonic Window (Eastern Thessaly, Central Greece)

Geosciences
This paper focuses on the structural and finite strain analysis of the Pelagonian nappe, the HP/LT Ampelakia unit, and the Olympos-Ossa unit in the Olympos-Ossa mountainous area in order to better understand the exhumation history of the Ampelakia unit ...
Ioannis Vrontzos, Emmanouil Katrivanos, Ilias Lazos, Lambrini Papadopoulou, Adamantios Kilias   +4 more
doaj   +1 more source

Hydraulic analysis of a compound weir (triangular-rectangular) simulated with computational fluid dynamics (CFD)

Tecnología y ciencias del agua, 2021
To make an efficient delivery of water to irrigation users, it is necessary to have accurate dispositive to measure flow rates. These dispositive include triangular and rectangular weirs for measured flow rates ranges between 30 and 200 l s-1.
Erick Dante Mattos-Villarroel, Jorge Flores-Velazquez, Waldo Ojeda-Bustamante, Mauro Iñiguez-Covarrubias, Carlos Díaz-Delgado, Humberto Salinas-Tapia   +5 more
doaj   +1 more source

Spatial and temporal evolution of a coastal erg margin: the Middle Jurassic Page Sandstone, southern Utah, USA

Sedimentology, EarlyView.
ABSTRACT Aeolian deflationary events are erosive to static stages where sediment supply is insufficient to support bedform migration and preservation in the rock record. In the vicinity of shallow‐marine environments, inland rises of relative water table and associated generation of deflationary super surfaces may be driven by the onset of ...
Victor J. P. Hême de Lacotte, Chester H. C. Davies, Briony J. Bowler, Stuart M. Clarke, Thomas J. H. Dodd   +4 more
wiley   +1 more source

Characterization of Nappe Vibration on a Weir

, 2016
peer reviewedThe nappe vibration phenomenon may affect numerous prototype structures, such as gates and spillways, when they operate under low head conditions.
Erpicum, Sébastien, P Archambeau, Lodomez, Maurine, Dewals, Benjamin, M Lodomez, M Pirotton, B Dewals, Pirotton, Michel, Archambeau, Pierre, S Erpicum   +9 more
core   +1 more source

Investigating Fine Particulate Matter in Streams Uncovers Peak Bacterial Activity in Agricultural Streams and on the Finest Particles

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract The processing of organic matter (OM) in stream ecosystems is a key component of the fluvial carbon cycle. While research has largely focused on the cycling of dissolved OM (DOM), suspended particles are increasingly recognized as active sites of OM cycling.
L. Haferkemper, G. Steniczka, S.‐K. Kämmer, M. J. Kainz, K. Attermeyer   +4 more
wiley   +1 more source

Regeneration of sand waves after dredging [PDF]

, 2002
Sand waves are large bed waves on the seabed, being a few metres high and lying hundreds of metres apart. In some cases, these sand waves occur in navigation channels.
Knaapen, M.A.F., Hulscher, S.J.M.H., M. A. F. Knaapen, Hulscher, Suzanne J.M.H., Knaapen, Michiel, S. J. M. H. Hulscher   +5 more
core   +1 more source

Stratigraphic revision and reconstruction of the deep-sea fan of the Voirons Flysch (Voirons Nappe, Chablais Prealps)

Swiss Journal of Geosciences, 2021
The Voirons Flysch (Caron in Eclogae Geologicae Helvetiae 69:297–308, 1976), is a flysch sequence aggregated into the sedimentary accretionary prism of the Chablais and Swiss Prealps.
Jérémy Ragusa, Lina Maria Ospina-Ostios, Pascal Kindler, Mario Sartori   +3 more
doaj   +1 more source