Jonathan Nelson (Former Employee)
Science and Products
Filter Total Items: 36
Evaluation of an experimental LiDAR for surveying a shallow, braided, sand-bedded river
Reaches of a shallow (
Authors
P.J. Kinzel, C. W. Wright, J. M. Nelson, A.R. Burman
Forces on stationary particles in near-bed turbulent flows
In natural flows, bed sediment particles are entrained and moved by the fluctuating forces, such as lift and drag, exerted by the overlying flow on the particles. To develop a better understanding of these forces and the relation of the forces to the local flow, the downstream and vertical components of force on near-bed fixed particles and of fluid velocity above or in front of them were measured
Authors
M.W. Schmeeckle, J. M. Nelson, R.L. Shreve
Monitoring changes in the Platte River riparian corridor with serial LiDAR surveys
The Platte River in central Nebraska is a wide, sand-bedded river that provides habitat for migratory water birds along the North American flyway. The central Platte River functions as critical habitat for the endangered whooping crane (Grus americana) and also is an important habitat for the endangered least tern (Sterna antillarum) and the threatened piping plover (Charadrius melodus). Upstream
Authors
Paul J. Kinzel, Jonathan M. Nelson, C. Wayne Wright
Channel morphology and bed-sediment characteristics before and after riparian vegetation clearing in the Cottonwood Ranch, Platte River, Nebraska, water years 2001-2004
Riparian areas along a reach of Platte River passing through Nebraska Public Power District's Cottonwood Ranch Property were modified during 2002 to 2004 to enhance in-channel habitats for endangered and threatened avian species. A component of this alteration involved the removal of riparian vegetation from riverbanks and islands to provide roosting habitat for the endangered whooping crane and t
Authors
Paul J. Kinzel, Jonathan M. Nelson, Ashley K. Heckman
Modeling surface-water flow and sediment mobility with the Multi-Dimensional Surface-Water Modeling System (MD_SWMS)
The Multi-Dimensional Surface-Water Modeling System (MD_SWMS) is a Graphical User Interface for surface-water flow and sediment-transport models. The capabilities of MD_SWMS for developing models include: importing raw topography and other ancillary data; building the numerical grid and defining initial and boundary conditions; running simulations; visualizing results; and comparing results with m
Authors
Richard McDonald, Jonathan Nelson, Paul Kinzel, Jeffrey S. Conaway
Spring census of mid-continent sandhill cranes using aerial infrared videography
Aerial infrared videography was used to map spatial distributions of nocturnal sandhill crane (Grus canadensis) flocks and determine crane densities within roosts as an alternative to the currently used diurnal photo-corrected ocular transect method to estimate the size of the mid-continental population. The densities determined from samples taken over the course of a night show variability. Densi
Authors
P.J. Kinzel, J. M. Nelson, R. S. Parker, L.R. Davis
Simulation of flow and sediment mobility using a multidimensional flow model for the White Sturgeon critical-habitat reach, Kootenai River near Bonners Ferry, Idaho
In 1994, the Kootenai River white sturgeon (Acipenser transmontanus) was listed as an Endangered Species as a direct result of two related observations. First, biologists observed that the white sturgeon population in the Kootenai River was declining. Second, they observed a decline in recruitment of juvenile sturgeon beginning in the 1950s with an almost total absence of recruitment since 1974, f
Authors
Gary J. Barton, Richard R. McDonald, Jonathan M. Nelson, Randal L. Dinehart
Geomorphic Data Collected Within Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2004
No abstract available.
Authors
Paul J. Kinzel, Randolph S. Parker, Jonathan M. Nelson, Aaron R. Burman, Ashley K. Heckman
Assessing sandhill crane roosting habitatalong the Platte River, Nebraska
Each spring approximately 500,000 sandhill cranes and some endangered whooping cranes use the Central Platte River Valley in Nebraska as a staging habitat during their migration north to breeding and nesting grounds in Canada, Alaska, and the Siberian Arctic. Over the last century changes in the flow of the river have altered the river channels and the distribution of roost sites. USGS researchers
Authors
P.J. Kinzel, J. M. Nelson, R. S. Parker
Variation in the reference Shields stress for bed load transport in gravel‐bed streams and rivers
The present study examines variations in the reference shear stress for bed load transport (τr) using coupled measurements of flow and bed load transport in 45 gravel‐bed streams and rivers. The study streams encompass a wide range in bank‐full discharge (1–2600 m3/s), average channel gradient (0.0003–0.05), and median surface grain size (0.027–0.21 m). A bed load transport relation was formed for
Authors
Erich R. Mueller, John Pitlick, Jonathan M. Nelson
Geomorphic Data Collected Within and Adjacent to Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2003
No abstract available.
Authors
Paul J. Kinzel, Randolph S. Parker, Jonathan M. Nelson, Aaron R. Burman, Ashley K. Heckman
Geomorphic data collected within and adjacent to Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2002
River-channel topographic surveys were conducted and bed-material samples were collected along transects across the Platte River during water year 2002 (October 1, 2001 to September 30, 2002). A total of 57 transect lines or cross sections were established within three study reaches located along the middle channel of the Platte River in a 2,650-acre parcel of land owned by the Nebraska Public Pow
Authors
Paul Kinzel, Randolph Parker, Jonathan Nelson, Steven Gyetvai, Aaron Burman, Ashley Heckman
Science and Products
Filter Total Items: 36
Evaluation of an experimental LiDAR for surveying a shallow, braided, sand-bedded river
Reaches of a shallow (
Authors
P.J. Kinzel, C. W. Wright, J. M. Nelson, A.R. Burman
Forces on stationary particles in near-bed turbulent flows
In natural flows, bed sediment particles are entrained and moved by the fluctuating forces, such as lift and drag, exerted by the overlying flow on the particles. To develop a better understanding of these forces and the relation of the forces to the local flow, the downstream and vertical components of force on near-bed fixed particles and of fluid velocity above or in front of them were measured
Authors
M.W. Schmeeckle, J. M. Nelson, R.L. Shreve
Monitoring changes in the Platte River riparian corridor with serial LiDAR surveys
The Platte River in central Nebraska is a wide, sand-bedded river that provides habitat for migratory water birds along the North American flyway. The central Platte River functions as critical habitat for the endangered whooping crane (Grus americana) and also is an important habitat for the endangered least tern (Sterna antillarum) and the threatened piping plover (Charadrius melodus). Upstream
Authors
Paul J. Kinzel, Jonathan M. Nelson, C. Wayne Wright
Channel morphology and bed-sediment characteristics before and after riparian vegetation clearing in the Cottonwood Ranch, Platte River, Nebraska, water years 2001-2004
Riparian areas along a reach of Platte River passing through Nebraska Public Power District's Cottonwood Ranch Property were modified during 2002 to 2004 to enhance in-channel habitats for endangered and threatened avian species. A component of this alteration involved the removal of riparian vegetation from riverbanks and islands to provide roosting habitat for the endangered whooping crane and t
Authors
Paul J. Kinzel, Jonathan M. Nelson, Ashley K. Heckman
Modeling surface-water flow and sediment mobility with the Multi-Dimensional Surface-Water Modeling System (MD_SWMS)
The Multi-Dimensional Surface-Water Modeling System (MD_SWMS) is a Graphical User Interface for surface-water flow and sediment-transport models. The capabilities of MD_SWMS for developing models include: importing raw topography and other ancillary data; building the numerical grid and defining initial and boundary conditions; running simulations; visualizing results; and comparing results with m
Authors
Richard McDonald, Jonathan Nelson, Paul Kinzel, Jeffrey S. Conaway
Spring census of mid-continent sandhill cranes using aerial infrared videography
Aerial infrared videography was used to map spatial distributions of nocturnal sandhill crane (Grus canadensis) flocks and determine crane densities within roosts as an alternative to the currently used diurnal photo-corrected ocular transect method to estimate the size of the mid-continental population. The densities determined from samples taken over the course of a night show variability. Densi
Authors
P.J. Kinzel, J. M. Nelson, R. S. Parker, L.R. Davis
Simulation of flow and sediment mobility using a multidimensional flow model for the White Sturgeon critical-habitat reach, Kootenai River near Bonners Ferry, Idaho
In 1994, the Kootenai River white sturgeon (Acipenser transmontanus) was listed as an Endangered Species as a direct result of two related observations. First, biologists observed that the white sturgeon population in the Kootenai River was declining. Second, they observed a decline in recruitment of juvenile sturgeon beginning in the 1950s with an almost total absence of recruitment since 1974, f
Authors
Gary J. Barton, Richard R. McDonald, Jonathan M. Nelson, Randal L. Dinehart
Geomorphic Data Collected Within Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2004
No abstract available.
Authors
Paul J. Kinzel, Randolph S. Parker, Jonathan M. Nelson, Aaron R. Burman, Ashley K. Heckman
Assessing sandhill crane roosting habitatalong the Platte River, Nebraska
Each spring approximately 500,000 sandhill cranes and some endangered whooping cranes use the Central Platte River Valley in Nebraska as a staging habitat during their migration north to breeding and nesting grounds in Canada, Alaska, and the Siberian Arctic. Over the last century changes in the flow of the river have altered the river channels and the distribution of roost sites. USGS researchers
Authors
P.J. Kinzel, J. M. Nelson, R. S. Parker
Variation in the reference Shields stress for bed load transport in gravel‐bed streams and rivers
The present study examines variations in the reference shear stress for bed load transport (τr) using coupled measurements of flow and bed load transport in 45 gravel‐bed streams and rivers. The study streams encompass a wide range in bank‐full discharge (1–2600 m3/s), average channel gradient (0.0003–0.05), and median surface grain size (0.027–0.21 m). A bed load transport relation was formed for
Authors
Erich R. Mueller, John Pitlick, Jonathan M. Nelson
Geomorphic Data Collected Within and Adjacent to Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2003
No abstract available.
Authors
Paul J. Kinzel, Randolph S. Parker, Jonathan M. Nelson, Aaron R. Burman, Ashley K. Heckman
Geomorphic data collected within and adjacent to Nebraska Public Power District's Cottonwood Ranch Property, Platte River, Nebraska, Water Year 2002
River-channel topographic surveys were conducted and bed-material samples were collected along transects across the Platte River during water year 2002 (October 1, 2001 to September 30, 2002). A total of 57 transect lines or cross sections were established within three study reaches located along the middle channel of the Platte River in a 2,650-acre parcel of land owned by the Nebraska Public Pow
Authors
Paul Kinzel, Randolph Parker, Jonathan Nelson, Steven Gyetvai, Aaron Burman, Ashley Heckman