Results 31 to 40 of about 8,353,179 (97)

The average order of the Dirichlet series of the gcd-sum function [PDF]

, 2007
Using a result of Bordellès, we derive the second term and improved error expressions for the partial sums of the Dirichlet series of the gcd-sum function, for all real values of the ...
Broughan, Kevin A.
core   +1 more source

19937400279/Improved-Change-Detection-Method: Improved Change Detection Method Data

, 2023
<p>We propose an improved change detection method and expose all the data and code used.
山川如故
core   +1 more source

The impact of riparian vegetation on bank erosion during extreme weather events

Earth Surface Processes and Landforms, Volume 50, Issue 10, August 2025.
This study uses lidar and aerial imagery to investigate relationships between riparian vegetation cover and bank erosion during extreme weather events. Bank erosion was related to riparian vegetation cover/removal and river geomorphology (notably radius of curvature and inner/outer bends).
Hamish Biggs, Arman Haddadchi, James Brasington, Jochen Bind, Justin Stout   +4 more
wiley   +1 more source

Quantifying streambank erosion: A comparison of physical surveys, aerial imagery and UAS LiDAR surveys

Earth Surface Processes and Landforms, Volume 50, Issue 6, May 2025.
Four methods were used to quantify short‐term (1–2 years) reach‐wide streambank erosion rates along three low‐order streams in western Virginia: (1) bank height and cross‐section (XS) surveys, (2) bank height and top of bank (TOB) surveys, (3) bank height survey and aerial imagery analysis and (4) DEM of Difference (DoD) using UAS LiDAR with channel ...
Layla El‐Khoury, Jack Kurki‐Fox, Barbara Doll   +2 more
wiley   +1 more source

The hydro‐geomorphic effects of wooden leaky barriers in a steep headwater stream

Earth Surface Processes and Landforms, Volume 50, Issue 6, May 2025.
The hydro‐geomorphic effects of 16 in‐stream wooden leaky barriers (LBs) were monitored over three years. The effects on velocities, inundation extent and celerity were limited. Localised backwater deposition initiated by LBs reduced velocities and increased inundation. A reach‐wide net deposition response of 3.49 ± 0.36 m3 was observed.
Stephen Addy, Mark Wilkinson, Paul Quinn
wiley   +1 more source

Geomorphic changes after the 2021 Central European flood in the Ahr Valley by LiDAR-based differences

Environmental Sciences Europe
Background In July 2021, destructive floods in Western Europe were triggered by enormous precipitation rates related to a low-pressure system named "Bernd." These catastrophic events led not only to major damage to infrastructure, severe economic losses,
Vanessa Steinritz, Piero Bellanova, Bernd Schmidt, Holger Schüttrumpf, Jan Schwarzbauer, Klaus Reicherter   +5 more
doaj   +1 more source

Practitioner Readiness: Developing Communities of River Practitioners (CoRPs) to Deliver Proactive Management Practices That Work With the River

WIREs Water, Volume 12, Issue 2, March/April 2025.
ABSTRACT Rapid expansion in the availability of data derived from ground, airborne, and satellite remote sensing, and numerical modeling applications is transforming river science and management practices. This digital revolution has the potential to catalyze the uptake of a riverscapes approach to deliver proactive and adaptive management practices ...
Gary Brierley, Kirstie Fryirs, Richard Williams, Richard Boothroyd, Pamela Louise Tolentino   +4 more
wiley   +1 more source

A conceptual connectivity framework for understanding geomorphic change in human-impacted fluvial systems

, 2017
Human-induced landscape change is difficult to predict due to the complexity inherent in both geomorphic and social systems as well as due to the coupling relationships between them.
Keesstra, Saskia D., Poeppl, Ronald E., Maroulis, Jerry   +2 more
core   +1 more source

Cascading consequences of structural interventions in a tropical wandering gravel‐bed river

River Research and Applications, Volume 41, Issue 1, Page 120-137, January 2025.
Abstract Riverscapes are often modified and managed through ‘command and control’ structural engineering approaches. These structures not only alter flow and sediment transport patterns but also negatively affect riverscape biodiversity. These impacts are particularly acute for rivers that are characterised by high mobility and wide flow distribution ...
Pamela Louise M. Tolentino, Richard D. Williams, Martin D. Hurst   +2 more
wiley   +1 more source

Impacts of Post‐Fire Debris Flows on Fluvial Morphology and Sediment Transport in a California Central Coast Stream

Journal of Geophysical Research: Earth Surface, Volume 129, Issue 12, December 2024.
Abstract Post‐fire debris flows alter impacted fluvial systems, but few studies quantify the magnitude and timing of reach‐scale channel response to these events. In August 2020, the Big Creek watershed along California's central coast burned in the Dolan Fire; in January 2021, an atmospheric river event triggered post‐fire debris flows in steep ...
Telemak Olsen, Allison M. Pfeiffer, Noah J. Finnegan, Chuxuan Li, Daniel E. Horton   +4 more
wiley   +1 more source