Publications
Publications related to National Cooperative Geologic Mapping Program and its Components.
Filter Total Items: 168
Diverse cataclysmic floods from Pleistocene glacial Lake Missoula Diverse cataclysmic floods from Pleistocene glacial Lake Missoula
In late Wisconsin time, the Purcell Trench lobe of the Cordilleran ice sheet dammed the Clark Fork of the Columbia River in western Montana, creating glacial Lake Missoula. During part of this epoch, the Okanogan lobe also dammed the Columbia River downstream, creating glacial Lake Columbia in northeast Washington. Repeated failure of the Purcell Trench ice dam released glacial Lake...
Authors
Roger Denlinger, David George, Charles Cannon, Jim E. O'Connor, Richard Waitt
River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon River network and reach‐scale controls on habitat for lamprey larvae in the Umpqua River Basin, Oregon
This study developed a spatially explicit framework to support the conservation of Western Brook Lamprey Lampetra richardsoni and Pacific Lamprey Entosphenus tridentatus in the Umpqua River basin, Oregon. This framework identified locations within the river network likely to support “potential burrowing habitat” for lamprey larvae based on geomorphic conditions and evaluated the overlap...
Authors
Krista Jones, Jason Dunham, Jim E. O'Connor, Mackenzie Keith, Joseph Mangano, Kelly Coates, Travis Mackie
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
Rainfall triggers more deep-seated landslides than Cascadia earthquakes in the Oregon Coast Range, USA Rainfall triggers more deep-seated landslides than Cascadia earthquakes in the Oregon Coast Range, USA
The coastal Pacific Northwest USA hosts thousands of deep-seated landslides. Historic landslides have primarily been triggered by rainfall, but the region is also prone to large earthquakes on the 1100-km-long Cascadia Subduction Zone megathrust. Little is known about the number of landslides triggered by these earthquakes because the last magnitude 9 rupture occurred in 1700 CE. Here...
Authors
Sean R LaHusen, Alison Duvall, Adam Booth, Alex Grant, Benjamin Mishkin, David R. Montgomery, William Struble, Joshua J. Roering, Joseph Wartman
GeMS (Geologic Map Schema)—A standard format for the digital publication of geologic maps GeMS (Geologic Map Schema)—A standard format for the digital publication of geologic maps
Introduction This report describes and defines GeMS (for Geologic Map Schema), a new standardized database schema—that is, a database design—for the digital publication of geologic maps. It originally was intended for geologic mapping funded by the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, but its use can be extended to other programs and agencies as...
Authors
Opportunities and challenges for restoration of the Merced River through Yosemite Valley, Yosemite National Park, USA Opportunities and challenges for restoration of the Merced River through Yosemite Valley, Yosemite National Park, USA
Successful river restoration requires understanding and integration of multiple disciplinary perspectives, including evaluations of past and ongoing watershed processes, local geomorphic response, and impacts unique to human activity. Nowhere is this more apparent than along the Merced River in Yosemite National Park, USA, where both an outstanding natural landscape and the consequences...
Authors
Derek Booth, Katie Ross-Smith, Elizabeth Haddon, Thomas Dunne, Eric Larsen, James Roche, Greg M. Stock, Virginia Mahacek
Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence
The MwMw 6.4 and MwMw 7.1 Ridgecrest earthquake sequence occurred on 4 and 5 July 2019 within the eastern California shear zone of southern California. Both events produced extensive surface faulting and ground deformation within Indian Wells Valley and Searles Valley. In the weeks following the earthquakes, more than six dozen scientists from government, academia, and the private sector...
Authors
Daniel Ponti, James Blair, Rosa M, Kate Thomas, Alexandra Pickering, Sinan Akciz, Stephen Angster, Jean-Philipe Avouac, Jeffrey Bachhuber, Steven Bacon, Nicolas Barth, S. Bennett, Kelly Blake, Stephan Bork, Benjamin Brooks, Thomas Bullard, Paul Burgess, Colin Chupik, Timothy Dawson, Michael DeFrisco, Jaime Delano, Stephen DeLong, James Dolan, Andrea Donnellan, Christopher DuRoss, Todd Ericksen, Erik Frost, Gareth Funning, Ryan Gold, Nicholas A Graehl, Carlos Gutierrez, Elizabeth Haddon, Alexandra Hatem, John Helms, Janis Hernandez, Christopher Hitchcock, Peter Holland, Kenneth Hudnut, Katherine Kendrick, Richard Koehler, Ozgur Kozaci, Tyler Ladinsky, Robert Leeper, Christopher Madugo, Maxime Mareschal, James McDonald, Devin McPhillips, Christopher Milliner, Daniel Mongovin, Alexander Morelan, Stephanie Nale, Johanna Nevitt, Matt O’Neal, Brian Olsen, Michael Oskin, Salena Padilla, Jason Patton, Belle Philibosian, Ian Pierce, Cynthia Pridmore, Nathaniel Roth, David Sandwell, Katherine M. Scharer, Gordon Seitz, Drake Singleton, Bridget Smith-Konter, Eleanor Spangler, Brian Swanson, Jessica Thompson Jobe, Jerome Treiman, Francesca Valencia, Joshua Vanderwal, Alana Williams, Xiaohua Xu, Judith Zachariasen, Jade Zimmerman, Robert Zinke
U.S. Geological Survey STATEMAP Program—Geologic mapping for the public good U.S. Geological Survey STATEMAP Program—Geologic mapping for the public good
As of 2020, STATEMAP has invested more than $150 million in 48 State geological surveys, matched dollar for dollar, to complete geologic mapping projects crucial to the health and security of State natural resources and residents. For more information about STATEMAP and other geologic mapping efforts supported by the National Cooperative Geologic Mapping Program, visit https://ncgmp.usgs...
Authors
Abby Ackerman, Darcy McPhee
Evidence of previous faulting along the 2019 Ridgecrest, California earthquake ruptures Evidence of previous faulting along the 2019 Ridgecrest, California earthquake ruptures
The July 2019 Ridgecrest earthquake sequence in southeastern California was characterized as surprising because only ~35% of the rupture occurred on previously mapped faults. Employing more detailed inspection of pre-event high-resolution topography and imagery in combination with field observations, we document evidence of active faulting in the landscape along the entire fault system...
Authors
Jessica Thompson Jobe, Belle Philibosian, Colin Chupik, Timothy Dawson, Scott Bennett, Ryan Gold, Christopher DuRoss, Tyler Ladinsky, Katherine Kendrick, Elizabeth Haddon, Ian Pierce, Brian Swanson, Gordon G. Seitz
The grass is not always greener on the other side: Seasonal reversal of vegetation greenness in aspect-driven semiarid ecosystems The grass is not always greener on the other side: Seasonal reversal of vegetation greenness in aspect-driven semiarid ecosystems
Our current understanding of semiarid ecosystems is that they tend to display higher vegetation greenness on polar-facing slopes (PFS) than on equatorial-facing slopes (EFS). However, recent studies have argued that higher vegetation greenness can occur on EFS during part of the year. To assess whether this seasonal reversal of aspect-driven vegetation is a common occurrence, we...
Authors
Nikul Kumari, Patricia Saco, Jose Rodriguez, Samuel Johnstone, Ankur Srivastava, Kwok Chun, Omer Yetemen
Deep Learning as a tool to forecast hydrologic response for landslide-prone hillslopes Deep Learning as a tool to forecast hydrologic response for landslide-prone hillslopes
Empirical thresholds for landslide warning systems have benefitted from the incorporation of soil‐hydrologic monitoring data, but the mechanistic basis for their predictive capabilities is limited. Although physically based hydrologic models can accurately simulate changes in soil moisture and pore pressure that promote landslides, their utility is restricted by high computational costs...
Authors
Elijah Orland, Joshua J. Roering, Matthew Thomas, Benjamin Mirus
Dating silica sinter (geyserite): A cautionary tale Dating silica sinter (geyserite): A cautionary tale
We describe a new effort to date hydrothermal silica sinter deposits (geyserite) from the Upper Geyser Basin of Yellowstone National Park using 14C of co-deposited organic matter, U-series and cosmogenic 10Be methods. A majority of the samples were collected from stratigraphic sections, mainly at Riverside, Giant, and Castle Geysers. Ages obtained from 41 14C analyses range from modern...
Authors
Dakota Churchill, Michael Manga, Shaul Hurwitz, Sara Peek, Joseph Licciardi, James Paces