Publications
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Interferometric synthetic-aperature radar (InSAR): Chapter 5
Geodesists are, for the most part, a patient and hardworking lot. A day spent hiking to a distant peak, hours spent waiting for clouds to clear a line-of-sight between observation points, weeks spent moving methodically along a level line – such is the normal pulse of the geodetic profession. The fruits of such labors are all the more precious because they are so scarce. A good day spent with an e
Authors
Daniel Dzurisin, Zhong Lu
Preliminary volcano-hazard assessment for the Tanaga volcanic cluster, Tanaga Island, Alaska
Summary of Volcano Hazards at Tanaga Volcanic Cluster The Tanaga volcanic cluster lies on the northwest part of Tanaga Island, about 100 kilometers west of Adak, Alaska, and 2,025 kilometers southwest of Anchorage, Alaska. The cluster consists of three volcanoes-from west to east, they are Sajaka, Tanaga, and Takawangha. All three volcanoes have erupted in the last 1,000 years, producing lava flow
Authors
Michelle L. Coombs, Robert G. McGimsey, Brandon L. Browne
Boiling water at Hot Creek— The dangerous and dynamic thermal springs in California’s Long Valley Caldera
The beautiful blue pools and impressive boiling fountains along Hot Creek in east-central California have provided enjoyment to generations of visitors, but they have also been the cause of injury or death to some who disregarded warnings and fences. The springs and geysers in the stream bed and along its banks change location, temperature, and flow rates frequently and unpredictably. The hot spri
Authors
Christopher D. Farrar, William C. Evans, Dina Y. Venezky, Shaul Hurwitz, Lynn K. Oliver
Mars Global Digital Dune Database: MC2-MC29
Introduction
The Mars Global Digital Dune Database presents data and describes the methodology used in creating the database. The database provides a comprehensive and quantitative view of the geographic distribution of moderate- to large-size dune fields from 65? N to 65? S latitude and encompasses ~ 550 dune fields. The database will be expanded to cover the entire planet in later versions. A
Authors
Rosalyn K. Hayward, Kevin F. Mullins, L.K. Fenton, T.M. Hare, T.N. Titus, M.C. Bourke, Anthony Colaprete, P. R. Christensen
Miscellaneous High-Resolution Seismic Imaging Investigations in Salt Lake and Utah Valleys for Earthquake Hazards
Introduction
In support of earthquake hazards and ground motion studies by researchers at the Utah Geological Survey, University of Utah, Utah State University, Brigham Young University, and San Diego State University, the U.S. Geological Survey Geologic Hazards Team Intermountain West Project conducted three high-resolution seismic imaging investigations along the Wasatch Front between Septemb
Authors
W. J. Stephenson, R. A. Williams, J. K. Odum, D. M. Worley
Earthquake Rate Model 2.2 of the 2007 Working Group for California Earthquake Probabilities, Appendix D: Magnitude-Area Relationships
Summary
To estimate the down-dip coseismic fault dimension, W, the Executive Committee has chosen the Nazareth and Hauksson (2004) method, which uses the 99% depth of background seismicity to assign W. For the predicted earthquake magnitude-fault area scaling used to estimate the maximum magnitude of an earthquake rupture from a fault's length, L, and W, the Committee has assigned equal weight
Authors
Ross S. Stein
River Chemistry and Solute Flux in Yellowstone National Park
Introduction
The Yellowstone Volcano Observatory (YVO) was established to 'To strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region'. Yellowstone National Park is underlain by a voluminous magmatic system overlain by the most active hydrothermal system on Earth. Tracking changes in water and gas chemistry is of great importance because anoma
Authors
Shaul Hurwitz, Sean Eagan, Henry Heasler, Dan Mahony, Mark A. Huebner, Jacob B. Lowenstern
Historical changes in the Mississippi-Alabama barrier islands and the roles of extreme storms, sea level, and human activities
An historical analysis of images and documents shows that the Mississippi-Alabama (MS-AL) barrier islands are undergoing rapid land loss and translocation. The barrier island chain formed and grew at a time when there was a surplus of sand in the alongshore sediment transport system, a condition that no longer prevails. The islands, except Cat, display alternating wide and marrow segments. Wide se
Authors
Robert A. Morton
Rainfall and Seasonal Movement of the Weeks Creek Landslide, San Mateo County, California
Introduction
Many different types of landslide occur in the Santa Cruz Mountains of San Mateo County, Calif. (Brabb and Pampeyan, 1972); most slope movement is triggered by strong earthquakes, heavy rainfall, or shoreline erosion. In this area, shallow landslides of loose soil and rock, which may transform into debris flows, commonly occur during individual storms when rainfall exceeds a thresh
Authors
Gerald F. Wieczorek, Mark E. Reid, Walter Jodicke, Chris Pearson, Grant Wilcox
The role of fault zone drilling
The objective of fault-zone drilling projects is to directly study the physical and chemical processes that control deformation and earthquake generation within active fault zones. An enormous amount of field, laboratory, and theoretical work has been directed toward the mechanical and hydrological behavior of faults over the past several decades. Nonetheless, it is currently impossible to differe
Authors
M.D. Zoback, Stephen H. Hickman, William L. Ellsworth
Reducing loss of life and property from disasters: A societal benefit area of the strategic plan for U.S. Integrated Earth Observation System (IEOS)
Natural and technological disasters, such as hurricanes and other extreme weather events, earthquakes, volcanic eruptions, landslides and debris flows, wildland and urban-interface fires, floods, oil spills, and space-weather storms, impose a significant burden on society. Throughout the United States, disasters inflict many injuries and deaths, and cost the nation $20 billion each year (SDR, 2003
Authors
Rosalind L. Helz, John E. Gaynor