Skye C Corbett
Skye is a Geologist with the Geology, Minerals, Energy, and Geophysics Science Center
Science and Products
Filter Total Items: 15
Rock mass quality and structural geology observations in Prince William Sound, Alaska (2024) Rock mass quality and structural geology observations in Prince William Sound, Alaska (2024)
Multiple subaerial landslides adjacent to Prince William Sound, Alaska (for example, Dai and others, 2020; Higman and others, 2023; Schaefer and others, 2024) pose a threat to the public because of their potential to generate ocean waves (Barnhart and others, 2021, 2022; Dai and others, 2020) that could affect towns and marine activities. One bedrock landslide on the west side of Barry...
Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California. Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California.
This data release provides datasets supporting research on landslides triggered by a series of storms in the San Francisco Bay Area, California, that occurred between December 25, 2022, through January 19, 2023. During this period, eight atmospheric river storms delivered intense and prolonged rainfall across the region, leading to significant hydrological responses and widespread...
Ground-Based LIDAR Data of a Section of the Point Bonita Lighthouse Trail, Golden Gate National Recreation Area, Marin County, California, January 23, 2025 Ground-Based LIDAR Data of a Section of the Point Bonita Lighthouse Trail, Golden Gate National Recreation Area, Marin County, California, January 23, 2025
A rockfall occurred between the night of January 5 and the morning of January 6, 2025 on the Point Bonita Trail in the National Park Service Golden Gate National Recreation Area, California. The rockfall originated from a granodiorite rock face in the Franciscan Formation and deposited approximately 25 cubic meters of rock on the pedestrian trail below. The U.S. Geological Survey...
Ground-based lidar data of the southeast face of El Capitan, Yosemite National Park, California, May 4, 2022 Ground-based lidar data of the southeast face of El Capitan, Yosemite National Park, California, May 4, 2022
We collected two ground-based (terrestrial) lidar scans of the southeast face of El Capitan cliff, located in Yosemite National Park, California. El Capitan is one of several iconic granitic cliffs in Yosemite and rises approximately 1000 meters above the floor of Yosemite Valley. The scans were collected from the same location and from a single vantage point on the edge of El Capitan...
Rock mass quality and structural geology observations in Prince William Sound, Alaska (2023) Rock mass quality and structural geology observations in Prince William Sound, Alaska (2023)
Multiple subaerial landslides adjacent to Prince William Sound, Alaska (for example, Dai and others, 2020; Higman and others, 2023; Schaefer and others, 2024) pose a threat to the public because of their potential to generate ocean waves (Barnhart and others, 2021, 2022; Dai and others, 2020) that could affect towns and marine activities. One bedrock landslide on the west side of Barry...
Imagery and digital surface model for the Slumgullion landslide, Lake City, Colorado, June 3, 2024 Imagery and digital surface model for the Slumgullion landslide, Lake City, Colorado, June 3, 2024
This dataset contains a point cloud (Slumgullion_PointCloud.laz), 1-meter digital surface model (Slumgullion_DSM.tif), and orthoimagery (0.1-meter resolution) (Slumgullion_Ortho.tif) of the active portion of the Slumgullion landslide in Lake City, Colorado. The Slumgullion landslide is a translational slide with a continuously moving, active portion and an inactive portion. 896 photos...
Landslides triggered by the February 2019 atmospheric river storm, western Riverside County, California, USA Landslides triggered by the February 2019 atmospheric river storm, western Riverside County, California, USA
On February 14th, 2019, a strong atmospheric river storm (AR4 on the Atmospheric River scale of Ralph et al., 2019) struck California. The heavy rainfall caused landslides in both northern and southern California (Hatchett et al., 2020). This data release includes two subsets of mapped shallow landslide source locations in the vicinity of western Riverside County, California, where...
Landslides triggered by the January 10th, 2005 storm in the vicinity of La Conchita, Ventura County, California, USA Landslides triggered by the January 10th, 2005 storm in the vicinity of La Conchita, Ventura County, California, USA
The area surrounding La Conchita, California (CA), USA experienced significant landslides and debris flows following a storm on January 10th, 2005, including a deadly deep-seated landslide that destroyed 13 houses and caused 10 fatalities (Jibson, 2006). This data release documents the locations of shallow landslide source locations in the vicinity of the deadly 2005 La Conchita...
San Francisco Bay Area Reconnaissance Landslide Inventory, January 2023 San Francisco Bay Area Reconnaissance Landslide Inventory, January 2023
From late December 2022 to January 2023, a series of atmospheric river storms produced widespread landsliding in the San Francisco Bay area of California. USGS scientists performed reconnaissance field work to document the extent of landsliding in the region and compiled reports of landslides from media and California Highway Patrol (CHP) reports. This data release documents locations of...
Mapped polygons of landslides triggered by the 2016-2017 storm season, eastern San Francisco Bay region, California Mapped polygons of landslides triggered by the 2016-2017 storm season, eastern San Francisco Bay region, California
The winter rainy season of 2016-2017 brought abundant rainfall to the state of California, including the San Francisco Bay region. Thousands of shallow landslides were triggered as a result of saturated soils and intense rainfall from strong winter storms in January and February 2017. The highest concentration of landslides from these storms occurred in the eastern part of the bay region...
Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA
This dataset comprises repeat surveys of field-saturated hydraulic conductivity and sorptivity following the October 2017 Nuns and Tubbs wildfires as part of an effort to document soil-hydraulic recovery. A summary table includes associated physiographic properties for each site, including: pre-burn vegetation, lithology, soil burn severity, location, soil texture, and associated van...
Field, remote sensing, and modeling data used for Collins et al., Rockfall Kinematics from Massive Rock Cliffs: Outlier Boulders and Flyrock Resulting from the 2020 Whitney Portal, California Rockfalls Field, remote sensing, and modeling data used for Collins et al., Rockfall Kinematics from Massive Rock Cliffs: Outlier Boulders and Flyrock Resulting from the 2020 Whitney Portal, California Rockfalls
This data release includes information used to support the manuscript "Rockfall kinematics from massive rock cliffs: outlier boulders and flyrock from Whitney Portal, California rockfalls". The included datasets and supplement include data that was collected and processed to investigate the kinematics of boulder trajectories and impacts to both other boulders and to existing trees on the...
Landslides triggered by the 2016–2017 storm season, eastern San Francisco Bay region, California Landslides triggered by the 2016–2017 storm season, eastern San Francisco Bay region, California
DiscussionThe winter rainy season of 2016–2017 brought abundant rainfall to the State of California and to the San Francisco Bay region. In January and February of 2017, intense rainfall from strong winter storms saturated soils in the region and triggered thousands of shallow landslides. The highest concentration of these landslides was in the eastern part of the bay region, where...
Filter Total Items: 14
Characterizing the scale of regional landslide triggering from storm hydrometeorology Characterizing the scale of regional landslide triggering from storm hydrometeorology
Rainfall strongly affects landslide triggering; however, understanding how storm characteristics relate to the severity of landslides at the regional scale has thus far remained unclear, despite the societal benefits that would result from defining this relationship. As mapped landslide inventories typically cover a small region relative to a storm system, here we develop a dimensionless...
Authors
Jonathan Perkins, Nina Oakley, Brian Collins, Skye Corbett, W. Burgess
Investigating the atmospheric conditions associated with impactful shallow landslides in California (USA) Investigating the atmospheric conditions associated with impactful shallow landslides in California (USA)
Shallow landslides are often triggered during rainfall events, which can increase subsurface soil water pressure and destabilize hillslopes. The likelihood of regional shallow landslide initiation is often assessed through a comparison of rainfall intensity and duration to pre-established thresholds. While informative for landslide warning, this exclusive focus on rainfall exceeding...
Authors
Nina Oakley, Jonathan Perkins, Samuel Bartlett, Brian Collins, Karimah Comstock, Dianne Brien, W.P. Burgess, Skye Corbett
An open-source workflow for scaling burn severity metrics from drone to satellite to support post-fire watershed management An open-source workflow for scaling burn severity metrics from drone to satellite to support post-fire watershed management
Wildfires are increasing in size and severity across much of the western United States, exposing vulnerable wildland-urban interfaces to post-fire hazards. The Mediterranean chaparral region of Northern California contains many high sloping watersheds prone to hazardous post-fire flood events and identifying watersheds at high risk of soil loss and debris flows is a priority for post...
Authors
Joshua Von Nonn, Miguel Villarreal, Leonhard Blesius, Jerry Davis, Skye Corbett
Multi-stage soil-hydraulic recovery and limited ravel accumulations following the 2017 Nuns and Tubbs wildfires in Northern California Multi-stage soil-hydraulic recovery and limited ravel accumulations following the 2017 Nuns and Tubbs wildfires in Northern California
Wildfire can impact soil-hydraulic properties by reducing saturated hydraulic conductivity and sorptivity, making recently burned landscapes prone to debris flows and flash floods. The post-fire hazard window can range from years to decades. In Northern California, where wildfire frequency is steadily increasing, the impact and soil-hydraulic recovery from wildfires is unknown. Following...
Authors
Jonathan Perkins, Carlos Diaz, Skye Corbett, Corina Cerovski-Darriau, Jonathan Stock, Jeffrey Prancevic, Lisa Micheli, Jay Jasperse
Rockfall kinematics from massive rock cliffs: Outlier boulders and flyrock from Whitney Portal, California, rockfalls Rockfall kinematics from massive rock cliffs: Outlier boulders and flyrock from Whitney Portal, California, rockfalls
Geologic conditions and topographic setting are among the most critical factors for assessing rockfall hazards. However, other subtle features of rockfall motion may also govern the runout of rockfall debris, particularly for those sourced from massive cliffs where debris can have substantial momentum during transport. Rocks may undergo collisions with trees and talus boulders, with the...
Authors
Brian Collins, Skye Corbett, Elizabeth Horton, Alan J. Gallegos
Linking mesoscale meteorology with extreme landscape response: Effects of narrow cold frontal rainbands (NCFR) Linking mesoscale meteorology with extreme landscape response: Effects of narrow cold frontal rainbands (NCFR)
Landscapes evolve in response to prolonged and/or intense precipitation resulting from atmospheric processes at various spatial and temporal scales. Whereas synoptic (large‐scale) features (e.g., atmospheric rivers and hurricanes) govern regional‐scale hydrologic hazards such as widespread flooding, mesoscale features such as thunderstorms or squall lines are more likely to trigger...
Authors
Brian Collins, N. Oakley, Jonathan Perkins, Amy East, Skye Corbett, Benjamin Hatchett
Terrestrial lidar data of the February 14, 2019 Sausalito Boulevard Landslide, Sausalito, California Terrestrial lidar data of the February 14, 2019 Sausalito Boulevard Landslide, Sausalito, California
On February 14, 2019, just before 2:56 am local time (Pacific Standard Time), a landslide initiated from the hillslopes above the Hurricane Gulch section of the City of Sausalito, Marin County, California. The landslide, specifically classified as a debris flow, overran a road (Sausalito Boulevard) immediately below the landslide source area and impacted a residential structure that...
Authors
Brian Collins, Skye Corbett
Thermal influences on spontaneous rock dome exfoliation Thermal influences on spontaneous rock dome exfoliation
Rock domes, with their onion-skin layers of exfoliation sheets, are among the most captivating landforms on Earth. Long recognized as integral in shaping domes, the exact mechanism(s) by which exfoliation occurs remains enigmatic, mainly due to the lack of direct observations of natural events. In August 2014, during the hottest days of summer, a granitic dome in California, USA...
Authors
Brian Collins, Greg Stock, Martha C. Eppes, Scott Lewis, Skye Corbett, Joel Smith
Seismic velocity site characterization of 10 Arizona strong-motion recording stations by spectral analysis of surface wave dispersion Seismic velocity site characterization of 10 Arizona strong-motion recording stations by spectral analysis of surface wave dispersion
Vertical one-dimensional shear wave velocity (VS) profiles are presented for strong-motion sites in Arizona for a suite of stations surrounding the Palo Verde Nuclear Generating Station. The purpose of the study is to determine the detailed site velocity profile, the average velocity in the upper 30 meters of the profile (VS30), the average velocity for the entire profile (VSZ), and the...
Authors
Robert Kayen, Brad A. Carkin, Skye Corbett
Conditions and processes affecting sand resources at archeological sites in the Colorado River corridor below Glen Canyon Dam, Arizona Conditions and processes affecting sand resources at archeological sites in the Colorado River corridor below Glen Canyon Dam, Arizona
This study examined links among fluvial, aeolian, and hillslope geomorphic processes that affect archeological sites and surrounding landscapes in the Colorado River corridor downstream from Glen Canyon Dam, Arizona. We assessed the potential for Colorado River sediment to enhance the preservation of river-corridor archeological resources through aeolian sand deposition or mitigation of...
Authors
Amy E. East, Brian Collins, Joel Sankey, Skye C. Corbett, Helen C. Fairley, Joshua Caster
Relations between rainfall–runoff-induced erosion and aeolian deposition at archaeological sites in a semi-arid dam-controlled river corridor Relations between rainfall–runoff-induced erosion and aeolian deposition at archaeological sites in a semi-arid dam-controlled river corridor
Process dynamics in fluvial-based dryland environments are highly complex with fluvial, aeolian, and alluvial processes all contributing to landscape change. When anthropogenic activities such as dam-building affect fluvial processes, the complexity in local response can be further increased by flood- and sediment-limiting flows. Understanding these complexities is key to predicting...
Authors
Brian Collins, David Bedford, Skye Corbett, Helen Fairley, Collin Cronkite-Ratcliff
By
Ecosystems Mission Area, Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Southwest Biological Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011 Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011
Vertical one-dimensional shear wave velocity (Vs) profiles are presented for 25 strong-motion instrument sites along the Mid-Atlantic eastern seaboard, Piedmont region, and Appalachian region, which surround the epicenter of the M5.8 Mineral, Virginia, Earthquake of August 23, 2011. Testing was performed at sites in Pennsylvania, Maryland, West Virginia, Virginia, the District of...
Authors
Robert Kayen, Brad A. Carkin, Skye Corbett, Aliza Zangwill, Ivan Estevez, Lena Lai
Science and Products
Filter Total Items: 15
Rock mass quality and structural geology observations in Prince William Sound, Alaska (2024) Rock mass quality and structural geology observations in Prince William Sound, Alaska (2024)
Multiple subaerial landslides adjacent to Prince William Sound, Alaska (for example, Dai and others, 2020; Higman and others, 2023; Schaefer and others, 2024) pose a threat to the public because of their potential to generate ocean waves (Barnhart and others, 2021, 2022; Dai and others, 2020) that could affect towns and marine activities. One bedrock landslide on the west side of Barry...
Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California. Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California.
This data release provides datasets supporting research on landslides triggered by a series of storms in the San Francisco Bay Area, California, that occurred between December 25, 2022, through January 19, 2023. During this period, eight atmospheric river storms delivered intense and prolonged rainfall across the region, leading to significant hydrological responses and widespread...
Ground-Based LIDAR Data of a Section of the Point Bonita Lighthouse Trail, Golden Gate National Recreation Area, Marin County, California, January 23, 2025 Ground-Based LIDAR Data of a Section of the Point Bonita Lighthouse Trail, Golden Gate National Recreation Area, Marin County, California, January 23, 2025
A rockfall occurred between the night of January 5 and the morning of January 6, 2025 on the Point Bonita Trail in the National Park Service Golden Gate National Recreation Area, California. The rockfall originated from a granodiorite rock face in the Franciscan Formation and deposited approximately 25 cubic meters of rock on the pedestrian trail below. The U.S. Geological Survey...
Ground-based lidar data of the southeast face of El Capitan, Yosemite National Park, California, May 4, 2022 Ground-based lidar data of the southeast face of El Capitan, Yosemite National Park, California, May 4, 2022
We collected two ground-based (terrestrial) lidar scans of the southeast face of El Capitan cliff, located in Yosemite National Park, California. El Capitan is one of several iconic granitic cliffs in Yosemite and rises approximately 1000 meters above the floor of Yosemite Valley. The scans were collected from the same location and from a single vantage point on the edge of El Capitan...
Rock mass quality and structural geology observations in Prince William Sound, Alaska (2023) Rock mass quality and structural geology observations in Prince William Sound, Alaska (2023)
Multiple subaerial landslides adjacent to Prince William Sound, Alaska (for example, Dai and others, 2020; Higman and others, 2023; Schaefer and others, 2024) pose a threat to the public because of their potential to generate ocean waves (Barnhart and others, 2021, 2022; Dai and others, 2020) that could affect towns and marine activities. One bedrock landslide on the west side of Barry...
Imagery and digital surface model for the Slumgullion landslide, Lake City, Colorado, June 3, 2024 Imagery and digital surface model for the Slumgullion landslide, Lake City, Colorado, June 3, 2024
This dataset contains a point cloud (Slumgullion_PointCloud.laz), 1-meter digital surface model (Slumgullion_DSM.tif), and orthoimagery (0.1-meter resolution) (Slumgullion_Ortho.tif) of the active portion of the Slumgullion landslide in Lake City, Colorado. The Slumgullion landslide is a translational slide with a continuously moving, active portion and an inactive portion. 896 photos...
Landslides triggered by the February 2019 atmospheric river storm, western Riverside County, California, USA Landslides triggered by the February 2019 atmospheric river storm, western Riverside County, California, USA
On February 14th, 2019, a strong atmospheric river storm (AR4 on the Atmospheric River scale of Ralph et al., 2019) struck California. The heavy rainfall caused landslides in both northern and southern California (Hatchett et al., 2020). This data release includes two subsets of mapped shallow landslide source locations in the vicinity of western Riverside County, California, where...
Landslides triggered by the January 10th, 2005 storm in the vicinity of La Conchita, Ventura County, California, USA Landslides triggered by the January 10th, 2005 storm in the vicinity of La Conchita, Ventura County, California, USA
The area surrounding La Conchita, California (CA), USA experienced significant landslides and debris flows following a storm on January 10th, 2005, including a deadly deep-seated landslide that destroyed 13 houses and caused 10 fatalities (Jibson, 2006). This data release documents the locations of shallow landslide source locations in the vicinity of the deadly 2005 La Conchita...
San Francisco Bay Area Reconnaissance Landslide Inventory, January 2023 San Francisco Bay Area Reconnaissance Landslide Inventory, January 2023
From late December 2022 to January 2023, a series of atmospheric river storms produced widespread landsliding in the San Francisco Bay area of California. USGS scientists performed reconnaissance field work to document the extent of landsliding in the region and compiled reports of landslides from media and California Highway Patrol (CHP) reports. This data release documents locations of...
Mapped polygons of landslides triggered by the 2016-2017 storm season, eastern San Francisco Bay region, California Mapped polygons of landslides triggered by the 2016-2017 storm season, eastern San Francisco Bay region, California
The winter rainy season of 2016-2017 brought abundant rainfall to the state of California, including the San Francisco Bay region. Thousands of shallow landslides were triggered as a result of saturated soils and intense rainfall from strong winter storms in January and February 2017. The highest concentration of landslides from these storms occurred in the eastern part of the bay region...
Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA
This dataset comprises repeat surveys of field-saturated hydraulic conductivity and sorptivity following the October 2017 Nuns and Tubbs wildfires as part of an effort to document soil-hydraulic recovery. A summary table includes associated physiographic properties for each site, including: pre-burn vegetation, lithology, soil burn severity, location, soil texture, and associated van...
Field, remote sensing, and modeling data used for Collins et al., Rockfall Kinematics from Massive Rock Cliffs: Outlier Boulders and Flyrock Resulting from the 2020 Whitney Portal, California Rockfalls Field, remote sensing, and modeling data used for Collins et al., Rockfall Kinematics from Massive Rock Cliffs: Outlier Boulders and Flyrock Resulting from the 2020 Whitney Portal, California Rockfalls
This data release includes information used to support the manuscript "Rockfall kinematics from massive rock cliffs: outlier boulders and flyrock from Whitney Portal, California rockfalls". The included datasets and supplement include data that was collected and processed to investigate the kinematics of boulder trajectories and impacts to both other boulders and to existing trees on the...
Landslides triggered by the 2016–2017 storm season, eastern San Francisco Bay region, California Landslides triggered by the 2016–2017 storm season, eastern San Francisco Bay region, California
DiscussionThe winter rainy season of 2016–2017 brought abundant rainfall to the State of California and to the San Francisco Bay region. In January and February of 2017, intense rainfall from strong winter storms saturated soils in the region and triggered thousands of shallow landslides. The highest concentration of these landslides was in the eastern part of the bay region, where...
Filter Total Items: 14
Characterizing the scale of regional landslide triggering from storm hydrometeorology Characterizing the scale of regional landslide triggering from storm hydrometeorology
Rainfall strongly affects landslide triggering; however, understanding how storm characteristics relate to the severity of landslides at the regional scale has thus far remained unclear, despite the societal benefits that would result from defining this relationship. As mapped landslide inventories typically cover a small region relative to a storm system, here we develop a dimensionless...
Authors
Jonathan Perkins, Nina Oakley, Brian Collins, Skye Corbett, W. Burgess
Investigating the atmospheric conditions associated with impactful shallow landslides in California (USA) Investigating the atmospheric conditions associated with impactful shallow landslides in California (USA)
Shallow landslides are often triggered during rainfall events, which can increase subsurface soil water pressure and destabilize hillslopes. The likelihood of regional shallow landslide initiation is often assessed through a comparison of rainfall intensity and duration to pre-established thresholds. While informative for landslide warning, this exclusive focus on rainfall exceeding...
Authors
Nina Oakley, Jonathan Perkins, Samuel Bartlett, Brian Collins, Karimah Comstock, Dianne Brien, W.P. Burgess, Skye Corbett
An open-source workflow for scaling burn severity metrics from drone to satellite to support post-fire watershed management An open-source workflow for scaling burn severity metrics from drone to satellite to support post-fire watershed management
Wildfires are increasing in size and severity across much of the western United States, exposing vulnerable wildland-urban interfaces to post-fire hazards. The Mediterranean chaparral region of Northern California contains many high sloping watersheds prone to hazardous post-fire flood events and identifying watersheds at high risk of soil loss and debris flows is a priority for post...
Authors
Joshua Von Nonn, Miguel Villarreal, Leonhard Blesius, Jerry Davis, Skye Corbett
Multi-stage soil-hydraulic recovery and limited ravel accumulations following the 2017 Nuns and Tubbs wildfires in Northern California Multi-stage soil-hydraulic recovery and limited ravel accumulations following the 2017 Nuns and Tubbs wildfires in Northern California
Wildfire can impact soil-hydraulic properties by reducing saturated hydraulic conductivity and sorptivity, making recently burned landscapes prone to debris flows and flash floods. The post-fire hazard window can range from years to decades. In Northern California, where wildfire frequency is steadily increasing, the impact and soil-hydraulic recovery from wildfires is unknown. Following...
Authors
Jonathan Perkins, Carlos Diaz, Skye Corbett, Corina Cerovski-Darriau, Jonathan Stock, Jeffrey Prancevic, Lisa Micheli, Jay Jasperse
Rockfall kinematics from massive rock cliffs: Outlier boulders and flyrock from Whitney Portal, California, rockfalls Rockfall kinematics from massive rock cliffs: Outlier boulders and flyrock from Whitney Portal, California, rockfalls
Geologic conditions and topographic setting are among the most critical factors for assessing rockfall hazards. However, other subtle features of rockfall motion may also govern the runout of rockfall debris, particularly for those sourced from massive cliffs where debris can have substantial momentum during transport. Rocks may undergo collisions with trees and talus boulders, with the...
Authors
Brian Collins, Skye Corbett, Elizabeth Horton, Alan J. Gallegos
Linking mesoscale meteorology with extreme landscape response: Effects of narrow cold frontal rainbands (NCFR) Linking mesoscale meteorology with extreme landscape response: Effects of narrow cold frontal rainbands (NCFR)
Landscapes evolve in response to prolonged and/or intense precipitation resulting from atmospheric processes at various spatial and temporal scales. Whereas synoptic (large‐scale) features (e.g., atmospheric rivers and hurricanes) govern regional‐scale hydrologic hazards such as widespread flooding, mesoscale features such as thunderstorms or squall lines are more likely to trigger...
Authors
Brian Collins, N. Oakley, Jonathan Perkins, Amy East, Skye Corbett, Benjamin Hatchett
Terrestrial lidar data of the February 14, 2019 Sausalito Boulevard Landslide, Sausalito, California Terrestrial lidar data of the February 14, 2019 Sausalito Boulevard Landslide, Sausalito, California
On February 14, 2019, just before 2:56 am local time (Pacific Standard Time), a landslide initiated from the hillslopes above the Hurricane Gulch section of the City of Sausalito, Marin County, California. The landslide, specifically classified as a debris flow, overran a road (Sausalito Boulevard) immediately below the landslide source area and impacted a residential structure that...
Authors
Brian Collins, Skye Corbett
Thermal influences on spontaneous rock dome exfoliation Thermal influences on spontaneous rock dome exfoliation
Rock domes, with their onion-skin layers of exfoliation sheets, are among the most captivating landforms on Earth. Long recognized as integral in shaping domes, the exact mechanism(s) by which exfoliation occurs remains enigmatic, mainly due to the lack of direct observations of natural events. In August 2014, during the hottest days of summer, a granitic dome in California, USA...
Authors
Brian Collins, Greg Stock, Martha C. Eppes, Scott Lewis, Skye Corbett, Joel Smith
Seismic velocity site characterization of 10 Arizona strong-motion recording stations by spectral analysis of surface wave dispersion Seismic velocity site characterization of 10 Arizona strong-motion recording stations by spectral analysis of surface wave dispersion
Vertical one-dimensional shear wave velocity (VS) profiles are presented for strong-motion sites in Arizona for a suite of stations surrounding the Palo Verde Nuclear Generating Station. The purpose of the study is to determine the detailed site velocity profile, the average velocity in the upper 30 meters of the profile (VS30), the average velocity for the entire profile (VSZ), and the...
Authors
Robert Kayen, Brad A. Carkin, Skye Corbett
Conditions and processes affecting sand resources at archeological sites in the Colorado River corridor below Glen Canyon Dam, Arizona Conditions and processes affecting sand resources at archeological sites in the Colorado River corridor below Glen Canyon Dam, Arizona
This study examined links among fluvial, aeolian, and hillslope geomorphic processes that affect archeological sites and surrounding landscapes in the Colorado River corridor downstream from Glen Canyon Dam, Arizona. We assessed the potential for Colorado River sediment to enhance the preservation of river-corridor archeological resources through aeolian sand deposition or mitigation of...
Authors
Amy E. East, Brian Collins, Joel Sankey, Skye C. Corbett, Helen C. Fairley, Joshua Caster
Relations between rainfall–runoff-induced erosion and aeolian deposition at archaeological sites in a semi-arid dam-controlled river corridor Relations between rainfall–runoff-induced erosion and aeolian deposition at archaeological sites in a semi-arid dam-controlled river corridor
Process dynamics in fluvial-based dryland environments are highly complex with fluvial, aeolian, and alluvial processes all contributing to landscape change. When anthropogenic activities such as dam-building affect fluvial processes, the complexity in local response can be further increased by flood- and sediment-limiting flows. Understanding these complexities is key to predicting...
Authors
Brian Collins, David Bedford, Skye Corbett, Helen Fairley, Collin Cronkite-Ratcliff
By
Ecosystems Mission Area, Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Southwest Biological Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011 Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011
Vertical one-dimensional shear wave velocity (Vs) profiles are presented for 25 strong-motion instrument sites along the Mid-Atlantic eastern seaboard, Piedmont region, and Appalachian region, which surround the epicenter of the M5.8 Mineral, Virginia, Earthquake of August 23, 2011. Testing was performed at sites in Pennsylvania, Maryland, West Virginia, Virginia, the District of...
Authors
Robert Kayen, Brad A. Carkin, Skye Corbett, Aliza Zangwill, Ivan Estevez, Lena Lai