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Filter Total Items: 780
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Year Published: 2018

The intensity signature of induced seismicity

We analyze a comprehensive database of ∼63,000">∼63,000 geocoded community intensity observations from >400">>400 earthquakes of moment magnitude M≥3.5">M≥3.5 in Oklahoma from 2010 to 2016 to define the intensity signature of induced events. We show that natural and induced...

Atkinson, Gail M.; Wald, David J.; Worden, Charles; Quitoriano, Vince
Gail M. Atkinson, David Wald, C. Bruce Worden, Vince Quitoriano; The Intensity Signature of Induced Seismicity. Bulletin of the Seismological Society of America ; 108 (3A): 1080–1086. doi: https://doi.org/10.1785/0120170316

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Year Published: 2018

The widespread influence of Great Lakes microseisms across the United States revealed by the 2014 polar vortex

During the winter of 2014, a weak polar vortex brought record cold temperatures to the north‐central (“Midwest”) United States, and the Great Lakes reached the highest extent of ice coverage (92.5%) since 1979. This event shut down the generation of seismic signals caused by wind‐driven wave action within the lakes (termed “lake microseisms”),...

Anthony, Robert E.; Ringler, Adam T.; Wilson, David C.
Anthony, R.E., A.T. Ringler, D.C. Wilson (2018), The Widespread Influence of Great Lakes Microseisms Across the United States Revealed by the 2014 Polar Vortex, Geophysical Research Letters, 45, 3436-3444. doi:10.1002/2017GL076690

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Year Published: 2018

Incorporating spatially heterogeneous infiltration capacity into hydrologic models with applications for simulating post‐wildfire debris flow initiation

Soils in post‐wildfire environments are often characterized by a low infiltration capacity with a high degree of spatial heterogeneity relative to unburned areas. Debris flows are frequently initiated by run‐off in recently burned steeplands, making it critical to develop and test methods for incorporating spatial variability in infiltration...

McGuire, Luke A.; Rengers, Francis K.; Kean, Jason W.; Staley, Dennis M.; Mirus, Benjamin B.

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Year Published: 2018

2018 one‐year seismic hazard forecast for the central and eastern United States from induced and natural earthquakes

This article describes the U.S. Geological Survey (USGS) 2018 one‐year probabilistic seismic hazard forecast for the central and eastern United States from induced and natural earthquakes. For consistency, the updated 2018 forecast is developed using the same probabilistic seismicity‐based methodology as applied in the two previous forecasts....

Petersen, Mark D.; Mueller, Charles; Moschetti, Morgan P.; Hoover, Susan M.; Rukstales, Kenneth S.; McNamara, Daniel E.; Williams, Robert A.; Shumway, Allison; Powers, Peter M.; Earle, Paul S.; Llenos, Andrea L.; Michael, Andrew J.; Rubinstein, Justin L.; Norbeck, Jack; Cochran, Elizabeth S.
Mark D. Petersen, Charles S. Mueller, Morgan P. Moschetti, Susan M. Hoover, Kenneth S. Rukstales, Daniel E. McNamara, Robert A. Williams, Allison M. Shumway, Peter M. Powers, Paul S. Earle, Andrea L. Llenos, Andrew J. Michael, Justin L. Rubinstein, Jack H. Norbeck, Elizabeth S. Cochran; 2018 One‐Year Seismic Hazard Forecast for the Central and Eastern United States from Induced and Natural Earthquakes. Seismological Research Letters ; 89 (3): 1049–1061. doi: https://doi.org/10.1785/0220180005

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Year Published: 2018

Improving near‐real‐time coseismic landslide models: Lessons learned from the 2016 Kaikōura, New Zealand, earthquake

The U.S. Geological Survey (USGS) is developing near‐real‐time global earthquake‐triggered‐landslide products to augment the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) system. The 14 November 2016 Mw">MwMw 7.8 Kaikōura, New Zealand, earthquake provided a test case for evaluating the performance and near‐real‐...

Allstadt, Kate E.; Jibson, Randall W.; Thompson, Eric M.; Massey, Chris; Wald, David J.; Godt, Jonathan W.; Rengers, Francis K.
Allstadt, K.E., Jibson, R.W., Thompson, E.M., Massey, C.I., Wald, D.J., Godt, J.W., Rengers, F.K., 2018, Improving Near‐Real‐Time Coseismic Landslide Models: Lessons Learned from the 2016 Kaikōura, New Zealand, Earthquake, Bulletin of the Seismological Society of America (2018) 108 (3B): 1649-1664.

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Year Published: 2018

Overview of the geologic effects of the November 14, 2016, Mw 7.8 Kaikoura, New Zealand, earthquake

The November 14, 2016, Kaikoura, New Zealand, earthquake (moment magnitude [Mw] 7.8) triggered more than 10,000 landslides over an area of about 12,000 square kilometers in the northeastern part of the South Island of New Zealand. In collaboration with GNS Science (the Institute of Geological and Nuclear Science Limited), we conducted ground and...

Jibson, Randall W.; Allstadt, Kate E.; Rengers, Francis K.; Godt, Jonathan W.
Jibson, R.W., Allstadt, K.E., Rengers, F.K., and Godt, J.W., 2018, Overview of the geologic effects of the November 14, 2016, Mw 7.8 Kaikoura, New Zealand, earthquake: U.S. Geological Survey Scientific Investigations Report 2017–5146, 39 p., https://doi.org/10.3133/sir20175146.

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Year Published: 2018

Geoelectric hazard assessment: the differences of geoelectric responses during magnetic storms within common physiographic zones

Geomagnetic field data obtained through the INTERMAGNET program are convolved with with magnetotelluric surface impedance from four EarthScope USArray sites to estimate the geoelectric variations throughout the duration of a magnetic storm. A duration of time from June 22, 2016, to June 25, 2016, is considered which encompasses a...

Cuttler, Stephen W.; Love, Jeffrey J.; Swidinsky, Andrei
Cuttler, S. W., Love, J. J. & Swidinsky, A., 2018. Geoelectric hazard assessment: the differences of geoelectric responses during magnetic storms within common physiographic zones, Earth Planets Space, 70, 35, doi:10.1186/s40623-018-0807-7.

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Year Published: 2018

Integrate urban‐scale seismic hazard analyses with the U.S. National Seismic Hazard Model

For more than 20 yrs, damage patterns and instrumental recordings have highlighted the influence of the local 3D geologic structure on earthquake ground motions (e.g., M">MM 6.7 Northridge, California, Gao et al., 1996; M">MM 6.9 Kobe, Japan, Kawase, 1996; M">MM 6.8 Nisqually,...

Moschetti, Morgan P.; Luco, Nicolas; Frankel, Arthur; Petersen, Mark D.; Aagaard, Brad T.; Baltay, Annemarie S.; Blanpied, Michael; Boyd, Oliver S.; Briggs, Richard W.; Gold, Ryan D.; Graves, Robert; Hartzell, Stephen H.; Rezaeian, Sanaz; Stephenson, William J.; Wald, David J.; Williams, Robert A.; Withers, Kyle

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Year Published: 2018

THRESH—Software for tracking rainfall thresholds for landslide and debris-flow occurrence, user manual

Precipitation thresholds are used in many areas to provide early warning of precipitation-induced landslides and debris flows, and the software distribution THRESH is designed for automated tracking of precipitation, including precipitation forecasts, relative to thresholds for landslide occurrence. This software is also useful for analyzing...

Baum, Rex L.; Fischer, Sarah J.; Vigil, Jacob C.
Baum, R.L., Fischer, S.J., and Vigil, J.C., 2018, THRESH—Software for tracking rainfall thresholds for landslide and debris-flow occurrence, user manual: U.S. Geological Survey Techniques and Methods, book 14, chap. A2, 33 p., https://doi.org/10.3133/tm14A2.

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Year Published: 2018

Spatial and spectral interpolation of ground-motion intensity measure observations

Following a significant earthquake, ground‐motion observations are available for a limited set of locations and intensity measures (IMs). Typically, however, it is desirable to know the ground motions for additional IMs and at locations where observations are unavailable. Various interpolation methods are available, but because IMs or their...

Worden, Charles; Thompson, Eric M.; Baker, Jack W.; Bradley, Brendon A.; Luco, Nicolas; Wald, David J.
C. Bruce Worden, Eric M. Thompson, Jack W. Baker, Brendon A. Bradley, Nicolas Luco, David J. Wald; Spatial and Spectral Interpolation of Ground‐Motion Intensity Measure Observations. Bulletin of the Seismological Society of America doi: https://doi.org/10.1785/0120170201

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Year Published: 2018

The evolution of a colluvial hollow to a fluvial channel with periodic steps following two transformational disturbances: A wildfire and a historic flood

The transition of a colluvial hollow to a fluvial channel with discrete steps was observed after two landscape-scale disturbances. The first disturbance, a high-severity wildfire, changed the catchment hydrology to favor overland flow, which incised a colluvial hollow, creating a channel in the same location. This incised channel became armored...

Rengers, Francis K.; McGuire, Luke; Ebel, Brian A.; Tucker, G. E.

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Year Published: 2018

A flatfile of ground motion intensity measurements from induced earthquakes in Oklahoma and Kansas

We have produced a uniformly processed database of orientation-independent (RotD50, RotD100) ground motion intensity measurements containing peak horizontal ground motions (accelerations and velocities) and 5-percent-damped pseudospectral accelerations (0.1–10 s) from more than 3,800 M ≥ 3 earthquakes in Oklahoma and Kansas that occurred...

Rennolet, Steven B.; Moschetti, Morgan P.; Thompson, Eric M.; Yeck, William L.

The Southwest Region ranges from the Colorado Rockies to the Gulf Coast and the Western Deserts to the Great Plains. The Southwest Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

Filter Total Items: 159
Photo of USGS scientist collecting noble gas sample from spring site near Roaring Judy, Colorado. 
July 20, 2016

USGS scientist collects noble gas sample from spring site

USGS scientist collects noble gas sample from spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S. Geological

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Photo of water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado.
July 20, 2016

Water quality and sampling at spring site

Water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S. Geological

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Photo showing the Great Basin area
June 30, 2016

Great Basin

The Great Basin area in the northern Snake Range near the Utah/Nevada boarder. 

Tree in the Great Basin range
June 30, 2016

Great Basin

The Great Basin area in the northern Snake Range near the Utah/Nevada boarder. 

Photo showing the Great Basin area
June 30, 2016

Great Basin

The Great Basin area in the northern Snake Range near the Utah/Nevada boarder. 

Photo showing the Great Basin area
June 30, 2016

Great Basin

The Great Basin area in the northern Snake Range near the Utah/Nevada boarder. 

Photo showing the Great Basin area
June 30, 2016

Great Basin

The Great Basin area in the northern Snake Range near the Utah/Nevada boarder. 

Image shows four men in visibility gear and hard hats at a coal mine
June 30, 2016

The USGS Coal Assessment Project

Coal project personnel visiting Trapper Mine in northwest Colorado in June, 2016.

Image shows a woman in a green coat working with a drill core
June 3, 2016

Sarah Hawkins Receives the Core

USGS scientist Sarah Hawkins, lead scientist for the Mancos Shale assessment, examining a core drilled by the USGS Core Research Center. This core provided valuable data for the assessment. Image credit: Joshua Hicks, USGS.

Image shows a drill rig against blue mountains
June 3, 2016

Research Drilling Rig and Landscape

The USGS Core Research Center collaborated with the USGS Energy Resources Program to drill a core from the Mancos Shale to aid in the oil and gas assessment. Image Credit: Joshua Hicks, USGS.

Image shows sunrise through a drill rig
June 3, 2016

USGS Research Drilling

USGS scientists drill a test core into the Mancos Shale to aid in the assessment for oil and gas resources. Credit: Joshua Hicks.

Photo of USGS scientist installing a temporary streamgage on the Brazos River near West Columbia, Texas.
June 1, 2016

Temporary Streamgage on Brazos River

USGS scientist Jody Avant installs a temporary streamgage on the Brazos River near West Columbia, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.

The Southwest Region ranges from the Colorado Rockies to the Gulf Coast and the Western Deserts to the Great Plains. The Southwest Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

Filter Total Items: 215