Results 81 to 90 of about 36,144 (312)
Evolution features of riverbeds near underwater crossing line pipes: An experimental study
Natural Gas Industry B, 2020 It is of important significance to study the evolution law of the riverbed near underwater crossing line pipes for ensuring the safe operation of oil and gas pipelines and reducing the risk of damage by water flood disasters.
Qian Yang +3 more
doaj +1 more source
River Bed Response to Channel Width Variation: Theory and Experiments (HES 49) [PDF]
, 1995 Illinois Water Resources Center (USGS Project 04 Contract 14-08-0004-G2017unpublishednot peer ...
Bittner, Laura D. +2 more
core
Impact of takeoff angle of bucket type energy dissipater on scour hole [PDF]
, 2008 Scour holes formed downstream of bucket type energy dissipater may affect the safety and stability of the structure. In this study, a physical model is employed to study the impact of takeoff angle of bucket type energy dissipater on the scour hole.
Alias, Nor Azlina +3 more
core +1 more source
Effect of Scour on the Natural Frequency Responses of Bridge Piers: Development of a Scour Depth Sensor [PDF]
Infrastructures, 2019 Local scour is the removal of soil around bridge foundations under the erosive action of flowing water. This hydraulic risk has raised awareness of the need for developing continuous monitoring techniques to estimate scour depth around bridge piers and abutments.
Nissrine Boujia +4 more
openaire +4 more sources
Evaluating anisotropy‐based Monin–Obukhov similarity theory over canopies and complex terrain
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study shows that an anisotropy‐based generalization of Monin–Obukhov surface‐layer scaling (SC23) applies readily across a wide range of atmospheric conditions with variable terrain, canopies, and land‐cover complexity. This work focuses on the scaling of velocity variances for 7 years at the 47 sites in the National Ecological Observation Network
Tyler S. Waterman +3 more
wiley +1 more source
River Research and Applications, EarlyView.ABSTRACT Low‐tech process‐based stream restoration (LTPBR) is increasingly implemented following wildfire, underscoring the need to evaluate restoration outcomes in burned catchments. To help address this need, we measured abiotic and biotic characteristics of a reach that received LTPBR, an untreated reach, and a reach with relict beaver activity that
Kimberly A. Nichter +5 more
wiley +1 more source
علوم آب و خاک, 2021 The scour around the bridge piers is one of the main causes of bridge failure and the extraction of aggregates may aggravate this phenomenon. The present study comprehensively investigated the scour around the groups of bridge piers in the presence of ...
R. Daneshfaraz +3 more
doaj
Geomorphic Responses to Post‐Grazing Recovery and Stream Restoration in Semiarid Grassland Streams
River Research and Applications, EarlyView.ABSTRACT Semiarid grassland streams are sensitive to land use, climate, extreme discharges, and internal geomorphic thresholds that drive episodic erosion. Rooted in a process‐based philosophy and commonly applied to historically wood‐rich, beaver‐modified systems, low‐tech process‐based restoration using structures is increasingly being extended to ...
Owen Richardson, Ellen Wohl
wiley +1 more source
Observations of River Topography and Flow Around Bridges [PDF]
, 2009 This investigation was motivated by the amount of river, estuarine, and coastal infrastructure that is susceptible to extreme wave and flooding events. The high velocities and resulting shear stresses associated with high flow velocities are capable of ...
Lippmann, Thomas C.
core +1 more source
Backwater controls of avulsion location on deltas [PDF]
, 2012 River delta complexes are built in part through repeated river-channel avulsions, which often occur about a persistent spatial node creating delta lobes that form a fan-like morphology. Predicting the location of avulsions is poorly understood, but it is
Chatanantavet, Phairot +2 more
core +2 more sources