Publications
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Water chemistry and electrical conductivity database for rivers in Yellowstone National Park, Wyoming Water chemistry and electrical conductivity database for rivers in Yellowstone National Park, Wyoming
Chloride flux has been used to estimate heat flow in volcanic environments since the method was developed in New Zealand by Ellis and Wilson (1955). The method can be applied effectively at Yellowstone, because nearly all of the water discharged from its thermal features enters one of four major rivers (the Madison, Yellowstone, Snake, and Falls Rivers) that drain the park, and thus...
Authors
Laura E. Clor, R. Blaine McCleskey, Mark A. Huebner, Jacob B. Lowenstern, Henry P. Heasler, Dan L. Mahony, Tim Maloney, William C. Evans
Modified Mercalli Intensity for scenario earthquakes in Evansville, Indiana Modified Mercalli Intensity for scenario earthquakes in Evansville, Indiana
Evansville, Indiana, has experienced minor damage from earthquakes several times in the past 200 years. Because of this history and the fact that Evansville is close to the Wabash Valley and New Madrid seismic zones, there is concern about the hazards from earthquakes. Earthquakes currently cannot be predicted, but scientists can estimate how strongly the ground is likely to shake as a...
Authors
Chris Cramer, Jennifer Haase, Oliver Boyd
Understanding earthquake hazards in urban areas - Evansville Area Earthquake Hazards Mapping Project Understanding earthquake hazards in urban areas - Evansville Area Earthquake Hazards Mapping Project
The region surrounding Evansville, Indiana, has experienced minor damage from earthquakes several times in the past 200 years. Because of this history and the proximity of Evansville to the Wabash Valley and New Madrid seismic zones, there is concern among nearby communities about hazards from earthquakes. Earthquakes currently cannot be predicted, but scientists can estimate how...
Authors
Oliver S. Boyd
Preliminary assessment of channel stability and bed-material transport in the Rogue River basin, southwestern Oregon Preliminary assessment of channel stability and bed-material transport in the Rogue River basin, southwestern Oregon
This report summarizes a preliminary assessment of bed-material transport, vertical and lateral channel changes, and existing datasets for the Rogue River basin, which encompasses 13,390 square kilometers (km2) along the southwestern Oregon coast. This study, conducted to inform permitting decisions regarding instream gravel mining, revealed that:The Rogue River in its lowermost 178.5...
Authors
Krista L. Jones, Jim E. O'Connor, Mackenzie K. Keith, Joseph F. Mangano, J. Rose Wallick
Using micro-seismicity and seismic velocities to map subsurface geologic and hydrologic structure within the Coso geothermal field, California Using micro-seismicity and seismic velocities to map subsurface geologic and hydrologic structure within the Coso geothermal field, California
Geothermal reservoirs derive their capacity for fluid and heat transport in large part from faults and fractures. Micro-seismicity generated on such faults and fractures can be used to map larger fault structures as well as secondary fractures that add access to hot rock, fluid storage and recharge capacity necessary to have a sustainable geothermal resource. Additionally, inversion of...
Authors
Joern Ole Kaven, Stephen H. Hickman, Nicholas C. Davatzes
Spatial distribution of landslides triggered from the 2007 Niigata Chuetsu–Oki Japan Earthquake Spatial distribution of landslides triggered from the 2007 Niigata Chuetsu–Oki Japan Earthquake
Understanding the spatial distribution of earthquake-induced landslides from specific earthquakes provides an opportunity to recognize what to expect from future events. The July 16, 2007 Mw 6.6 (MJMA 6.8) Niigata Chuetsu–Oki Japan earthquake triggered hundreds of landslides in the area surrounding the coastal city of Kashiwazaki and provides one such opportunity to evaluate the impacts...
Authors
Brian D. Collins, Robert E. Kayen, Yasuo Tanaka
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Long-term creep rates on the Hayward Fault: Evidence for controls on the size and frequency of large earthquakes Long-term creep rates on the Hayward Fault: Evidence for controls on the size and frequency of large earthquakes
The Hayward fault (HF) in California exhibits large (Mw 6.5–7.1) earthquakes with short recurrence times (161±65 yr), probably kept short by a 26%–78% aseismic release rate (including postseismic). Its interseismic release rate varies locally over time, as we infer from many decades of surface creep data. Earliest estimates of creep rate, primarily from infrequent surveys of offset...
Authors
James J. Lienkaemper, Forrest S. McFarland, Robert W. Simpson, Roger G. Bilham, David A. Ponce, John Boatwright, S. John Caskey
Ocean-atmosphere dynamics during Hurricane Ida and Nor'Ida: An application of the coupled ocean-;atmosphere–wave–sediment transport (COAWST) modeling system Ocean-atmosphere dynamics during Hurricane Ida and Nor'Ida: An application of the coupled ocean-;atmosphere–wave–sediment transport (COAWST) modeling system
The coupled ocean–atmosphere–wave–sediment transport (COAWST) modeling system was used to investigate atmosphere–ocean–wave interactions in November 2009 during Hurricane Ida and its subsequent evolution to Nor'Ida, which was one of the most costly storm systems of the past two decades. One interesting aspect of this event is that it included two unique atmospheric extreme conditions, a...
Authors
Maitane Olabarrieta, John C. Warner, Brandy N. Armstrong, Joseph B. Zambon, Ruoying He
Inflation rates, rifts, and bands in a pāhoehoe sheet flow Inflation rates, rifts, and bands in a pāhoehoe sheet flow
The margins of sheet flows—pāhoehoe lavas emplaced on surfaces sloping
Authors
Richard P. Hoblitt, Tim R. Orr, Christina Heliker, Roger P. Denlinger, Ken Hon, Peter F. Cervelli
Effects of smectite to illite transformation on the frictional strength and sliding stability of intact marine mudstones Effects of smectite to illite transformation on the frictional strength and sliding stability of intact marine mudstones
At subduction zones, earthquake nucleation and coseismic slip occur only within a limited depth range, known as the “seismogenic zone”. One leading hypothesis for the upper aseismic-seismic transition is that transformation of smectite to illite at ∼100–150°C triggers a change from rate-strengthening frictional behavior that allows only stable sliding, to rate weakening behavior...
Authors
Demian M. Saffer, David A. Lockner, Alex McKiernan
The role of photogeologic mapping in traverse planning: Lessons from DRATS 2010 activities The role of photogeologic mapping in traverse planning: Lessons from DRATS 2010 activities
We produced a 1:24,000 scale photogeologic map of the Desert Research and Technology Studies (DRATS) 2010 simulated lunar mission traverse area and surrounding environments located within the northeastern part of the San Francisco Volcanic Field (SFVF), north-central Arizona. To mimic an exploratory mission, we approached the region “blindly” by rejecting prior knowledge or preconceived...
Authors
James A. Skinner, Corey M. Fortezzo
Curiosity's Mars Hand Lens Imager (MAHLI) investigation Curiosity's Mars Hand Lens Imager (MAHLI) investigation
The Mars Science Laboratory (MSL) Mars Hand Lens Imager (MAHLI) investigation will use a 2-megapixel color camera with a focusable macro lens aboard the rover, Curiosity, to investigate the stratigraphy and grain-scale texture, structure, mineralogy, and morphology of geologic materials in northwestern Gale crater. Of particular interest is the stratigraphic record of a ?5 km thick...
Authors
Kenneth S. Edgett, R. Aileen Yingst, Michael A. Ravine, Michael A. Caplinger, Justin N. Maki, F. Tony Ghaemi, Jacob A. Schaffner, James F. Bell, Laurence J. Edwards, Kenneth E. Herkenhoff, Ezat Heydari, Linda C. Kah, Mark T. Lemmon, Michelle E. Minitti, Timothy S. Olson, Timothy J. Parker, Scott K. Rowland, Juergen Schieber, Robert J. Sullivan, Dawn Y. Sumner, Peter C. Thomas, Elsa H. Jensen, John J. Simmonds, Aaron J. Sengstacken, Reg G. Wilson, Walter Goetz