scholarly journals Stratigraphic hierarchy and three‐dimensional evolution of an exhumed submarine slope channel system

Sedimentology ◽  
2020 ◽  
Author(s):  
Daniel Bell ◽  
David M. Hodgson ◽  
Anna S. M. Pontén ◽  
Larissa A. S. Hansen ◽  
Stephen S. Flint ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Channel System ◽  
Submarine Slope ◽  
Slope Channel

Three-dimensional seismic geomorphology of a deep-water slope-channel system: The Sequoia field, offshore west Nile Delta, Egypt

AAPG Bulletin ◽  
2009 ◽  
Vol 93 (8) ◽  
pp. 1063-1086 ◽  
Author(s):  
Nigel E. Cross ◽  
Alan Cunningham ◽  
Robert J. Cook ◽  
Amal Taha ◽  
Eslam Esmaie ◽  
...  
Keyword(s):  
Deep Water ◽  
Nile Delta ◽  
Three Dimensional ◽  
West Nile ◽  
Channel System ◽  
Seismic Geomorphology ◽  
Slope Channel

Study on Hydraulic Characteristics and Optimization of Siphon Channel with Two Inlets in Drydock

2014 ◽  
Vol 638-640 ◽  
pp. 1285-1292
Author(s):  
Peng Zhao ◽  
Yu Chuan Bai
Keyword(s):  
Energy Dissipation ◽  
Numerical Model ◽  
Kinetic Energy ◽  
Dissipation Rate ◽  
Three Dimensional ◽  
Flow State ◽  
Hydraulic Characteristics ◽  
Channel System ◽  
Guide Wall ◽  
Low Efficiency

Compared with the siphon channel with one inlet, the siphon channel with two inlets has some problems such as low efficiency of flooding. Combining with the model test of siphon channel with two inlets in a drydock, three-dimensional numerical model was built to study the hydraulic characteristics of siphon channel system. The reliability of numerical model was confirmed by comparing the calculated value and measured value of hump pressure and flooding rate. Results of turbulent kinetic energy and dissipation rate indicate that flow kinetic energy is mainly dissipated by the friction and its impacting the wall behind partition and the effect of energy dissipation pillars are not obvious. By comparing flow state in front of energy dissipation section and flooding rate between design scheme and modified scheme, it is suggested that the guide wall should be dismantled to ameliorate flow state.

scholarly journals Architecture, process, and environmental diversity in a late Cretaceous slope channel system

2020 ◽  
Vol 90 (1) ◽  
pp. 1-26 ◽  
Author(s):  
Benjamin Kneller ◽  
Guilherme Bozetti ◽  
Richard Callow ◽  
Mason Dykstra ◽  
Larissa Hansen ◽  
...  
Keyword(s):  
Building Blocks ◽  
Heavy Minerals ◽  
Coarse Grained ◽  
Turbidity Currents ◽  
Axial Region ◽  
Sedimentary Process ◽  
Channel System ◽  
Environmental Diversity ◽  
Channel Belt ◽  
Slope Channel

ABSTRACT Arroyo San Fernando, on the Pacific coast of Baja California, Mexico, provides a superb view of the architecture of a Maastrichtian active margin slope channel system and the record of its evolution through a third-order sea-level cycle. The succession is organized into architectural building blocks (channel-complex sets) consisting of a channel belt with an axial region and a channel-belt margin of terraces and internal levees. The channel belt is confined by an external levee on one side and by an erosion surface into the slope on the other. Each channel-complex set can be subdivided into three stages of evolution: Stage I consists of highly amalgamated coarse-grained channel complexes, Stage II consists of gravelly meander belts with marginal and stratigraphically intervening thin-bedded turbidites, and Stage III consists of mudstones representing abandonment. This succession is associated with repeated and therefore predictable changes in architecture, facies distribution, inferred seafloor morphology, and sedimentary process. We describe variability in the sedimentology, ichnology, palynology, provenance, and inferred sedimentary processes between and within these architectural elements. Channel formation and fill are attributed to erosion, sediment transport, and deposition by turbidity currents and lesser debris flows. Ichnology indicates enhanced oxygenation and supply of organic material, substrate type, and turbidity within the channel belt; the axial region can be differentiated from the terraces by differing response to turbidity-current intensity. Levee environments show ichnological gradients away from the channel towards background slope. Palynology reflects confinement of the supply of terrigenous material to the channel belt, but is also indicative of stratification within the turbidity-currents, as is the distribution of heavy minerals. Provenance is from the extinct part of the continental-margin arc to the east, via high-gradient gravelly streams and across a steep shoreline, with direct supply of coastal material to deep water. Architectural hierarchy bears comparison with other slope channel systems, but in common with them the fill represents only a small fraction of the time that the system was active.

Spatial and Temporal Evolution of a Permian Submarine Slope Channel-Levee System, Karoo Basin, South Africa

2011 ◽  
Vol 81 (8) ◽  
pp. 579-599 ◽  
Author(s):  
C. N. Di Celma ◽  
R. L. Brunt ◽  
D. M. Hodgson ◽  
S. S. Flint ◽  
J. P. Kavanagh
Keyword(s):  
South Africa ◽  
Temporal Evolution ◽  
Submarine Slope ◽  
Karoo Basin ◽  
Levee System ◽  
Slope Channel

scholarly journals Two- and three-dimensional computation of solitary wave runup on non-plane beach

2008 ◽  
Vol 15 (3) ◽  
pp. 489-502 ◽  
Author(s):  
B. H. Choi ◽  
E. Pelinovsky ◽  
D. C. Kim ◽  
I. Didenkulova ◽  
S.-B. Woo
Keyword(s):  
Solitary Wave ◽  
Numerical Study ◽  
Three Dimensional ◽  
Navier Stokes ◽  
Wave Runup ◽  
Water Displacement ◽  
Wave Processes ◽  
Field Surveys ◽  
Nonlinear Shallow Water Theory ◽  
Slope Channel

Abstract. Solitary wave runup on a non-plane beach is studied analytically and numerically. For the theoretical approach, nonlinear shallow-water theory is applied to obtain the analytical solution for the simplified bottom geometry, such as an inclined channel whose cross-slope shape is parabolic. It generalizes Carrier-Greenspan approach for long wave runup on the inclined plane beach that is currently used now. For the numerical study, the Reynolds Averaged Navier-Stokes (RANS) system is applied to study soliton runup on an inclined beach and the detailed characteristics of the wave processes (water displacement, velocity field, turbulent kinetic energy, energy dissipation) are analyzed. In this study, it is theoretically and numerically proved that the existence of a parabolic cross-slope channel on the plane beach causes runup intensification, which is often observed in post-tsunami field surveys.

Mu-28: an open-framework fluorogallophosphate with a three-dimensional 12-membered ring channel system

2004 ◽  
Vol 177 (10) ◽  
pp. 3721-3728 ◽  
Author(s):  
Ludovic Josien ◽  
Angélique Simon-Masseron ◽  
Volker Gramlich ◽  
Florence Porcher ◽  
Joël Patarin
Keyword(s):  
Three Dimensional ◽  
Membered Ring ◽  
Channel System ◽  
Open Framework ◽  
Ring Channel

The First Zeolite with Three-Dimensional Intersecting Straight-Channel System of 12-Membered Rings

2001 ◽  
Vol 123 (22) ◽  
pp. 5370-5371 ◽  
Author(s):  
Zheng Liu ◽  
Tetsu Ohsuna ◽  
Osamu Terasaki ◽  
Miguel A. Camblor ◽  
Maria-Jose Diaz-Cabañas ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Straight Channel ◽  
Channel System

Lateral accretion in a straight slope channel system: an example from the Forties Sandstone of the Huntington Field, UK Central North Sea

2017 ◽  
Vol 8 (1) ◽  
pp. 413-428 ◽  
Author(s):  
Chris Edwards ◽  
Sean McQuaid ◽  
Stewart Easton ◽  
Don Scott ◽  
Andrew Couch ◽  
...  
Keyword(s):  
North Sea ◽  
Seismic Data ◽  
High Concentration ◽  
Channel Networks ◽  
Channel System ◽  
Flow Circulation ◽  
Meander Bends ◽  
The Right ◽  
Central North Sea ◽  
Slope Channel

AbstractA rich dataset of core, well logs and 3D seismic data has been integrated to establish a depositional hierarchy of a Paleocene-aged, Forties slope channel system of the Huntington Field, Block 22/14b of the Central North Sea. The reservoir consists of a mix of high-concentration turbidites and muddy and sandy debrites deposited as a series of laterally offset, slope channel fills. Seismic data reveal that the channels were remarkably straight and devoid of meander bends, more commonly associated with sinuous slope channel networks. Paradoxically, the internal offlapping architecture draws close comparisons with lateral accretion packages that are widely accepted to be the products of secondary flow circulation around sinuous channel bends. The straight nature of the Huntington channels precludes such an interpretation but can be explained as a consequence of Coriolis effects acting upon suspension-dominated flows in Northern Hemisphere high latitudes, resulting in the preferential accretion of sediment along the right-hand bank (when viewed downstream) and leading to the eventual lateral avulsion of the channel. The observed architecture has been incorporated into a reservoir model in order to characterize the static connectivity of the field that will in turn serve as a basis for understanding production behaviour.

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