Conference Papers
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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Karst terrain promotes thermal resiliency in headwater streams
The response of stream ecosystems to climate change will depend in part on groundwater processes that reduce the sensitivity of streams to atmospheric conditions. We investigated the thermal sensitivity of streams across a gradient of groundwater inputs defined by karst terrain (carbonate parent materials) in the headwaters of the Potomac River basin in eastern North America. We collected stream
Authors
Karmann G. Kessler, Karli M Rogers, Charles Marshak, Nathaniel P. Hitt
Waterfalls in reservoirs: Tracking the development of nickpoints in the sediments of declining reservoirs
Recent drought has resulted in dramatic lowering of the two largest water-storage reservoirs in the western United States: Lake Powell and Lake Mead. These decreases in reservoir elevations have resulted in the re-emergence of over 100 km of the Colorado and San Juan rivers at the upstream end of Lake Powell and over 80 km of the Colorado River at the upstream end of Lake Mead. Upon reservoir lowe
Authors
Paul Grams, Robert B. Tusso
Evaluating methods for applying fouling attenuation shifts to acoustic backscatter data used in suspended-sediment computations
No abstract available.
Authors
Zulimar Lucena, Michael T. Lee, Jeffery W. East
The evolution of natural and developed barriers under accelerating sea levels
Communities residing on barrier islands depend upon the ability of barriers to withstand forcings such as waves, sea-level rise, and storms, particularly under stresses from climate change. Using a barrier island evolution model, we compare barrier response to linear versus accelerating sea-level rise. Results suggest that barriers are more likely to drown under accelerating rather than linear sea
Authors
Rose Elizabeth Palermo, Andrew D. Ashton, Di Jin, Porter Hoagland, Jorge Lorenzo-Trueba
Exploring centennial barrier-inlet evolution: Insights from undeveloped and developed phases at Barnegat Inlet, New Jersey
This study aims to identify the natural processes and the subsequent responses to coastal engineering and development on the alongshore evolution of the IB-BI-LBI inlet-barrier system. The primary focus will be the quantification of barrier island and inlet sediment partitioning at decadal to centennial timescales, from 1839-1941. We analyze historical alongshore evolution and track coastal engine
Authors
Shane Nichols-O'Neill, Jorge Lorenzo-Trueba, Daniel J. Ciarletta, Jennifer L. Miselis
Stream corridor sources of suspended sediment and sediment-bound phosphorus from an urban tributary to the Great Lakes
Potential sources of suspended sediment and sediment-bound phosphorus (sedP) were studied in the Kinnickinnic River (51 square kilometers), a heavily urbanized tributary to Lake Michigan (90% urban land use) in Milwaukee, Wisconsin. The river is 60% concrete lined channels, with few unlined reaches. From September 2019 through August 2020, an integrated study of sediment budget and sediment finger
Authors
James Blount, Leah Lenoch, Faith Fitzpatrick
Numerical model characterization of sediment transport potentials pre- and post-construction of an artificial island in Foggy Island Bay, Alaska
The anticipated construction of the Liberty Development Island near Prudhoe Bay, Alaska, has created a need to understand how the island may influence sediment transport patterns and deposition on the nearby Boulder Patch ecosystem. This study uses a numerical model to characterize sediment transport pathways in Foggy Island Bay with and without the artificial island in place. We present the Delft
Authors
Cornelis M. Nederhoff, Li H. Erikson, Anita C Engelstad, Stuart Pearson
A conceptual workflow for projecting future riverine and coastal flood hazards to support the federal flood risk management standard
In 2021, the reinstatement of the Federal Flood Risk Management Standard (FFRMS) required
federally funded projects to recognize potential increases in flood hazards over their service lives due to climate change or local anthropogenic perturbations. Recognizing that the state of the science had advanced since the implementation guidelines for this standard were published in 2015 (WRC, 2015, Appen
Authors
Jory Seth Hecht, Douglas C. Marcy, Jacquelyn R. Overbeck, Lauren Schmied, Faith Fitzpatrick, Nicole E.M. Kinsman, Maria G. Honeycutt, Robert R. Mason,, Joseph Krolak, William C. Veatch, Julia G. Prokopec, Harvie Pollard, Allen C. Gellis, Daniel Sharar-Salgado, Edward Clark, Christopher P. Weaver
Assessment and guidance for using Laser In-situ Scattering and Transmissometry– Stream-Lined 2 (LISST-SL2)
The Laser In-situ Scattering and Transmissometry–Stream-Lined 2 (LISST-SL2) is a second-generation isokinetic river sediment monitoring device that uses laser diffraction to measure suspended-sediment concentration and particle size between 1 and 500 microns in 36 log-spaced bins at a point in a river every second. We compare this latest laser diffraction instrument for suspended-sediment sampling
Authors
Muneer Ahammad, Jonathan A. Czuba, Christopher A. Curran
Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida
Decadal to centennial variations in sediment availability are a primary driver of coastal change within barrier systems. Models help explore how barrier morphology relates to past changes in magnitude of sediment availability, but this requires insights and validation from field efforts. In this study, we investigate the progradation of Anclote Key via its morphostratigraphy, a presently dynamic b
Authors
Daniel J. Ciarletta, Jennifer L. Miselis, Julie Bernier, Arnell S. Forde, Shannon A. Mahan
Multiscale assessment of shoreline evolution in the US Pacific Northwest via a process-based model
Prediction of shoreline evolution in coastal environments is critical to aid adaptation strategy planning for coastal communities. To perform reliable predictions, process-based shoreline change models have recently gained popularity in many applications. The study region here, Tillamook County, Oregon, on the US Pacific Northwest coast, has recently been experiencing elevated shoreline erosion ra
Authors
Mohsen Taherkhani, Meredith Leung, Peter Ruggiero, Sean Vitousek, Jonathan Allan
UAS mapping of surface roughness and digital grain size to assess pre-dam removal baseline conditions along the mainstem Klamath River corridor below Iron Gate Dam, California
Surface roughness and grain size in river corridors are fundamental indicators of river hydraulics. In hydraulic models for coarse-grained rivers, the roughness parameter is often assumed to be related to a representative grain diameter. This paper documents a workflow for using aerial imagery and Structure-from-Motion (SfM) photogrammetry to map surface roughness and digital grain size (DGS) on g
Authors
Jennifer Curtis, Jacob John Taylor, Patrick Alan Haluska, Christian Luis Estrada, Michael J. Bartley, Sierra Noel Keller