Kurt Spicer
Long term monitoring of water and sediment discharge at Mount St. Helens.
Science and Products
Filter Total Items: 22
Estimating concentrations of fine-grained and total suspended sediment from close-range remote sensing imagery
Fluvial sediment, a vital surface water resource, is hazardous in excess. Suspended sediment, the most prevalent source of impairment of river systems, can adversely affect flood control, navigation, fisheries and aquatic ecosystems, recreation, and water supply (e.g., Rasmussen et al., 2009; Qu, 2014). Monitoring programs typically focus on suspended-sediment concentration (SSC) and discharge (SS
Authors
Adam R. Mosbrucker, Kurt R. Spicer, Tami S. Christianson, Mark A. Uhrich
Correlations of turbidity to suspended-sediment concentration in the Toutle River Basin, near Mount St. Helens, Washington, 2010-11
Researchers at the U.S. Geological Survey, Cascades Volcano Observatory, investigated alternative methods for the traditional sample-based sediment record procedure in determining suspended-sediment concentration (SSC) and discharge. One such sediment-surrogate technique was developed using turbidity and discharge to estimate SSC for two gaging stations in the Toutle River Basin near Mount St. Hel
Authors
Mark A. Uhrich, Jasna Kolasinac, Pamela L. Booth, Robert L. Fountain, Kurt R. Spicer, Adam R. Mosbrucker
Hydrothermal monitoring in a quiescent volcanic arc: Cascade Range, northwestern United States
Ongoing (1996–present) volcanic unrest near South Sister, Oregon, is accompanied by a striking set of hydrothermal anomalies, including elevated temperatures, elevated major ion concentrations, and 3He/4He ratios as large as 8.6 RA in slightly thermal springs. These observations prompted the US Geological Survey to begin a systematic hydrothermal-monitoring effort encompassing 25 sites and 10 of t
Authors
Steven E. Ingebritsen, N. G. Randolph-Flagg, Katrina D. Gelwick, Elizabeth A. Lundstrom, Ilana M. Crankshaw, Anna M. Murveit, M.E. Schmidt, Deborah Bergfeld, Kurt R. Spicer, David S. Tucker, Robert H. Mariner, William C. Evans
Geomorphic response of the Sandy River, Oregon, to removal of Marmot Dam
The October 2007 breaching of a temporary cofferdam constructed during removal of the 15-meter (m)-tall Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 cubic meters (m3) of sand and gravel filling the former reservoir became available to a high-gradient river. Using direct measurements of sediment transport, photogrammetry, airborne light detectio
Authors
Jon J. Major, Jim E. O'Connor, Charles J. Podolak, Mackenzie K. Keith, Gordon E. Grant, Kurt R. Spicer, Smokey Pittman, Heather M. Bragg, J. Rose Wallick, Dwight Q. Tanner, Abagail Rhode, Peter R. Wilcock
Evolving fluvial response of the Sandy River, Oregon, following removal of Marmot Dam
The October 2007 removal of Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 m3 of sand and gravel that filled the former reservoir were suddenly exposed to an energetic river. Using direct measurements of sediment transport, photogrammetry, and repeat surveys between transport events, we monitored the erosion, transport, and redeposition of this s
Authors
Jon J. Major, Jim O'Connor, Charles J. Podolak, Mackenzie K. Keith, Kurt R. Spicer, J. Rose Wallick, Heather M. Bragg, Smokey Pittman, Peter R. Wilcock, Abagail Rhode, Gordon E. Grant
Time-lapse imagery of the breaching of Marmot Dam, Oregon, and subsequent erosion of sediment by the Sandy River– October 2007 to May 2008
In 2007, Marmot Dam on the Sandy River, Oregon, was removed and a temporary cofferdam standing in its place was breached, allowing the river to flow freely along its entire length. Time-lapse imagery obtained from a network of digital single-lens reflex cameras placed around the lower reach of the sediment-filled reservoir behind the dam details rapid erosion of sediment by the Sandy River after b
Authors
Jon J. Major, Kurt R. Spicer, Rebecca A. Collins
Pre- and post-eruptive investigations of gas and water samples from Mount St. Helens, Washington, 2002 to 2005
Samples of gas and water from thermal springs in
Loowit and Step canyons and creeks that drain the crater at
Mount St. Helens have been collected since October 2004
to monitor the flux of dissolved magmatic volatiles in the
hydrologic system. The changing composition of the waters
highlights a trend that began as early as 1994 and includes
decreasing SO4
and Cl concentrations and large incr
Authors
D. Bergfeld, William C. Evans, Kenneth A. McGee, Kurt R. Spicer
Initial fluvial response to the removal of Oregon's Marmot Dam
A temporary, 14‐meter‐high earthen cofferdam standing in place of Marmot Dam was breached on 19 October 2007, allowing the 80‐ kilometer‐long Sandy River to flow freely from Mount Hood, Oreg., to the Columbia River for the first time in nearly 100 years. Marmot Dam is one of the largest dams in the western United States (in terms of height and volume of stored sediment) to have been removed in the
Authors
Jon J. Major, Kurt R. Spicer, Abagail Rhode, J. E. O'Connor, Heather M. Bragg, Dwight Q. Tanner, Chauncey W. Anderson, J. Rose Wallick, Gordon E. Grant
Evaluating a Radar-Based, Non Contact Streamflow Measurement System in the San Joaquin River at Vernalis, California
Accurate measurement of flow in the San Joaquin River at Vernalis, California, is vital to a wide range of Federal and State agencies, environmental interests, and water contractors. The U.S. Geological Survey uses a conventional stage-discharge rating technique to determine flows at Vernalis. Since the flood of January 1997, the channel has scoured and filled as much as 20 feet in some sections n
Authors
Ralph T. Cheng, Jeffrey W. Gartner, Robert R. Mason,, John E. Costa, William J. Plant, Kurt R. Spicer, F. Peter Haeni, Nick B. Melcher, William C. Keller, Ken Hayes
Science and Products
Filter Total Items: 22
Estimating concentrations of fine-grained and total suspended sediment from close-range remote sensing imagery
Fluvial sediment, a vital surface water resource, is hazardous in excess. Suspended sediment, the most prevalent source of impairment of river systems, can adversely affect flood control, navigation, fisheries and aquatic ecosystems, recreation, and water supply (e.g., Rasmussen et al., 2009; Qu, 2014). Monitoring programs typically focus on suspended-sediment concentration (SSC) and discharge (SS
Authors
Adam R. Mosbrucker, Kurt R. Spicer, Tami S. Christianson, Mark A. Uhrich
Correlations of turbidity to suspended-sediment concentration in the Toutle River Basin, near Mount St. Helens, Washington, 2010-11
Researchers at the U.S. Geological Survey, Cascades Volcano Observatory, investigated alternative methods for the traditional sample-based sediment record procedure in determining suspended-sediment concentration (SSC) and discharge. One such sediment-surrogate technique was developed using turbidity and discharge to estimate SSC for two gaging stations in the Toutle River Basin near Mount St. Hel
Authors
Mark A. Uhrich, Jasna Kolasinac, Pamela L. Booth, Robert L. Fountain, Kurt R. Spicer, Adam R. Mosbrucker
Hydrothermal monitoring in a quiescent volcanic arc: Cascade Range, northwestern United States
Ongoing (1996–present) volcanic unrest near South Sister, Oregon, is accompanied by a striking set of hydrothermal anomalies, including elevated temperatures, elevated major ion concentrations, and 3He/4He ratios as large as 8.6 RA in slightly thermal springs. These observations prompted the US Geological Survey to begin a systematic hydrothermal-monitoring effort encompassing 25 sites and 10 of t
Authors
Steven E. Ingebritsen, N. G. Randolph-Flagg, Katrina D. Gelwick, Elizabeth A. Lundstrom, Ilana M. Crankshaw, Anna M. Murveit, M.E. Schmidt, Deborah Bergfeld, Kurt R. Spicer, David S. Tucker, Robert H. Mariner, William C. Evans
Geomorphic response of the Sandy River, Oregon, to removal of Marmot Dam
The October 2007 breaching of a temporary cofferdam constructed during removal of the 15-meter (m)-tall Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 cubic meters (m3) of sand and gravel filling the former reservoir became available to a high-gradient river. Using direct measurements of sediment transport, photogrammetry, airborne light detectio
Authors
Jon J. Major, Jim E. O'Connor, Charles J. Podolak, Mackenzie K. Keith, Gordon E. Grant, Kurt R. Spicer, Smokey Pittman, Heather M. Bragg, J. Rose Wallick, Dwight Q. Tanner, Abagail Rhode, Peter R. Wilcock
Evolving fluvial response of the Sandy River, Oregon, following removal of Marmot Dam
The October 2007 removal of Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 m3 of sand and gravel that filled the former reservoir were suddenly exposed to an energetic river. Using direct measurements of sediment transport, photogrammetry, and repeat surveys between transport events, we monitored the erosion, transport, and redeposition of this s
Authors
Jon J. Major, Jim O'Connor, Charles J. Podolak, Mackenzie K. Keith, Kurt R. Spicer, J. Rose Wallick, Heather M. Bragg, Smokey Pittman, Peter R. Wilcock, Abagail Rhode, Gordon E. Grant
Time-lapse imagery of the breaching of Marmot Dam, Oregon, and subsequent erosion of sediment by the Sandy River– October 2007 to May 2008
In 2007, Marmot Dam on the Sandy River, Oregon, was removed and a temporary cofferdam standing in its place was breached, allowing the river to flow freely along its entire length. Time-lapse imagery obtained from a network of digital single-lens reflex cameras placed around the lower reach of the sediment-filled reservoir behind the dam details rapid erosion of sediment by the Sandy River after b
Authors
Jon J. Major, Kurt R. Spicer, Rebecca A. Collins
Pre- and post-eruptive investigations of gas and water samples from Mount St. Helens, Washington, 2002 to 2005
Samples of gas and water from thermal springs in
Loowit and Step canyons and creeks that drain the crater at
Mount St. Helens have been collected since October 2004
to monitor the flux of dissolved magmatic volatiles in the
hydrologic system. The changing composition of the waters
highlights a trend that began as early as 1994 and includes
decreasing SO4
and Cl concentrations and large incr
Authors
D. Bergfeld, William C. Evans, Kenneth A. McGee, Kurt R. Spicer
Initial fluvial response to the removal of Oregon's Marmot Dam
A temporary, 14‐meter‐high earthen cofferdam standing in place of Marmot Dam was breached on 19 October 2007, allowing the 80‐ kilometer‐long Sandy River to flow freely from Mount Hood, Oreg., to the Columbia River for the first time in nearly 100 years. Marmot Dam is one of the largest dams in the western United States (in terms of height and volume of stored sediment) to have been removed in the
Authors
Jon J. Major, Kurt R. Spicer, Abagail Rhode, J. E. O'Connor, Heather M. Bragg, Dwight Q. Tanner, Chauncey W. Anderson, J. Rose Wallick, Gordon E. Grant
Evaluating a Radar-Based, Non Contact Streamflow Measurement System in the San Joaquin River at Vernalis, California
Accurate measurement of flow in the San Joaquin River at Vernalis, California, is vital to a wide range of Federal and State agencies, environmental interests, and water contractors. The U.S. Geological Survey uses a conventional stage-discharge rating technique to determine flows at Vernalis. Since the flood of January 1997, the channel has scoured and filled as much as 20 feet in some sections n
Authors
Ralph T. Cheng, Jeffrey W. Gartner, Robert R. Mason,, John E. Costa, William J. Plant, Kurt R. Spicer, F. Peter Haeni, Nick B. Melcher, William C. Keller, Ken Hayes