Results 51 to 60 of about 20,777 (236)

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

open access: yesNear Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball   +4 more
wiley   +1 more source

Wave overtopping at dykes with topped vertical wall - Impacts of oblique wave attack [PDF]

open access: yes, 2012
Hydraulic model tests at a scale of 1:10 are carried out in a 40 m x 25 m wave basin with a state-of-the-art 3D wave generator in order to collect wave overtopping data at vertical walls and dykes with topped vertical walls.
Kerpen, Nils B., Schlurmann, Torsten
core   +2 more sources

Response of specific leaf area to light: comparative study of a large species set

open access: yesOikos, EarlyView.
Specific leaf area (SLA) is a commonly used proxy for the leaf economy spectrum in plants, separating species with low‐cost leaves (in terms of carbon) with short lifespan and hence fast turnover from species with high‐cost and long‐lived leaves. While SLA is used mainly for interspecific comparisons, it also varies within species both ontogenetically ...
Tomáš Herben   +2 more
wiley   +1 more source

Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek   +2 more
wiley   +1 more source

Multi‐Sources and Modes‐Based Overtopping Risk Model for Gravity Dams Under Extreme Working Conditions

open access: yesWater Resources Research
Addressing the limitations of traditional overtopping risk analysis methods, which either consider only a single failure mode or fail to accurately characterize the nonlinear characteristics of reservoir levels, this paper proposes a novel overtopping ...
Liang Pei   +5 more
doaj   +1 more source

A numerical investigation of irregular wave overtopping on a 2D fixed overtopping wave energy converter

open access: yesEngineering Applications of Computational Fluid Mechanics
Overtopping wave energy converters (OWECs) are designed to capture the energy from wave overtopping and transform it into clean and renewable electricity. The present paper numerically investigates irregular wave overtopping on a simplified 2-dimensional
Deping Cao   +6 more
doaj   +1 more source

Study of Overtopping Flow Velocity and Overtopping Layer Thickness on Composite Breakwater under Regular Wave

open access: yesJournal of Marine Science and Engineering, 2023
Overtopping flow velocity (OFV) and overtopping layer thickness (OTL) are essential parameters in breakwater design. Several empirical equations to predict these parameters are available in many works of literature, but most of the equations were derived
Made Narayana Adibhusana   +3 more
doaj   +1 more source

Barrier island erosion and overwash study -- effect of seawalls. Volume 2 [PDF]

open access: yes, 1992
This is the second of a pair of reports documenting the effects of storms on beach systems including the presence of seawalls. With the aim of simulating the effects of overwash on barrier islands with seawalls and characterizing their response, a ...
Dean, Robert G.   +2 more
core  

Wave Overtopping at Sea Dikes on Shallow Foreshores: A Review, an Evaluation, and Remaining Challenges

open access: yesJournal of Marine Science and Engineering, 2023
Wave overtopping is a critical parameter in the design of coastal defense structures. Nowadays, several empirical formulations based on small-scale experiments are available in the literature to predict the mean overtopping discharge at dikes on shallow ...
Gulizar Ozyurt Tarakcioglu   +3 more
doaj   +1 more source

Flow‐pattern evolution of the Scandinavian Ice Sheet indicated by the subglacial lineation record over Norway, Sweden and Finland

open access: yesBoreas, EarlyView.
We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher   +9 more
wiley   +1 more source

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