Publications
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Multitemporal ALSM change detection, sediment delivery, and process mapping at an active earthflow
Remote mapping and measurement of surface processes at high spatial resolution is among the frontiers in Earth surface process research. Remote measurements that allow meter-scale mapping of landforms and quantification of landscape change can revolutionize the study of landscape evolution on human timescales. At Mill Gulch in northern California, USA, an active earthflow was surveyed in 2003 and
Authors
Stephen B. DeLong, Carol S. Prentice, George E. Hilley, Yael Ebert
Deep-Sea Turbidites as Guides to Holocene Earthquake History at the Cascadia Subduction Zone—Alternative Views for a Seismic-Hazard Workshop
This report reviews the geological basis for some recent estimates of earthquake hazards in the Cascadia region between southern British Columbia and northern California. The largest earthquakes to which the region is prone are in the range of magnitude 8-9. The source of these great earthquakes is the fault down which the oceanic Juan de Fuca Plate is being subducted or thrust beneath the North A
Authors
Brian F. Atwater, Gary B. Griggs
GEM Basic Building Taxonomy (Version 1.0)
This report documents the development of Global Earthquake Model (GEM) Basic Building Taxonomy and it also provides
version 1.0 of this Taxonomy for its immediate application within GEM Physical Risk projects. Criteria for development of
the GEM Building Taxonomy required that the Taxonomy be relevant to seismic performance of different construction
types; be comprehensive yet simple; be collapsib
Authors
S. Brzev, C. Scawthorn, A.W. Charleson, K. Jaiswal
Deep magmatic degassing versus scrubbing: Elevated CO2 emissions and C/S in the lead-up to the 2009 eruption of Redoubt Volcano, Alaska
We report CO2, SO2, and H2S emission rates and C/S ratios during the five months leading up to the 2009 eruption of Redoubt Volcano, Alaska. CO2emission rates up to 9018 t/d and C/S ratios ≥30 measured in the months prior to the eruption were critical for fully informed forecasting efforts. Observations of ice-melt rates, meltwater discharge, and water chemistry suggest that surface waters represe
Authors
Cynthia A. Werner, William C. Evans, Peter J. Kelly, Robert G. McGimsey, Melissa Pfeffer, Michael P. Doukas, Christina A. Neal
A terrain-based site characterization map of California with implications for the contiguous United States
We present an approach based on geomorphometry to predict material properties and characterize site conditions using the VS30 parameter (time‐averaged shear‐wave velocity to a depth of 30 m). Our framework consists of an automated terrain classification scheme based on taxonomic criteria (slope gradient, local convexity, and surface texture) that systematically identifies 16 terrain types from 1‐k
Authors
Alan K. Yong, Susan E. Hough, Junko Iwahashi, Amy Braverman
Kinematics of the New Madrid seismic zone, central United States, based on stepover models
Seismicity in the New Madrid seismic zone (NMSZ) of the central United States is generally attributed to a stepover structure in which the Reelfoot thrust fault transfers slip between parallel strike-slip faults. However, some arms of the seismic zone do not fit this simple model. Comparison of the NMSZ with an analog sandbox model of a restraining stepover structure explains all of the arms of se
Authors
Thomas L. Pratt
Real-time monitoring of landslides
Landslides cause fatalities and property damage throughout the Nation. To reduce the impact from hazardous landslides, the U.S. Geological Survey develops and uses real-time and near-real-time landslide monitoring systems. Monitoring can detect when hillslopes are primed for sliding and can provide early indications of rapid, catastrophic movement. Continuous information from up-to-the-minute or r
Authors
Mark E. Reid, Richard G. LaHusen, Rex L. Baum, Jason W. Kean, William H. Schulz, Lynn M. Highland
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 integration of
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
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 result of a
Authors
Chris Cramer, Jennifer Haase, Oliver Boyd
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 strongly the grou
Authors
Oliver S. Boyd
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 kilometers (
Authors
Krista L. Jones, Jim E. O'Connor, Mackenzie K. Keith, Joseph F. Mangano, J. Rose Wallick
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 of an offs
Authors
Brian D. Collins, Robert E. Kayen, Yasuo Tanaka