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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (411 download)
Download or read book A Comprehensive Geophysical Investigation to Assess Seismic Hazards in the Wabash Valley Seismic Zone written by and published by . This book was released on 1997 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Albert J. Rudman
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (411 download)
Download or read book A Comprehensive Geophysical Investigation to Assess Seismic Hazards in the Wabash Valley Seismic Zone written by Albert J. Rudman and published by . This book was released on 1997* with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies
Publisher :
ISBN 13 :
Total Pages : 590 pages
Book Rating : 4.0/5 (18 download)
Download or read book Department of the Interior and Related Agencies Appropriations for 1998: U.S. Geological Survey written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies and published by . This book was released on 1997 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 688 pages
Book Rating : 4.:/5 (318 download)
Download or read book Summaries of Technical Reports, Volume X written by and published by . This book was released on 1980 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies
Publisher :
ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.:/5 ( download)
Download or read book Department of the Interior and Related Agencies Appropriations for 1998: U.S. Geological Survey .... Bureau of Indian Affairs written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies and published by . This book was released on 1997 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bill Sweidan
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (128 download)
Download or read book A Tomographic Analysis of the Wabash Valley Seismic Zone written by Bill Sweidan and published by . This book was released on 2021 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wabash Valley Seismic Zone (WVSZ), or Wabash Valley Fault System (WVFS), is an intraplate region of higher-than-average seismicity located within the Illinois Basin. This region has produced three 5.0+ magnitude earthquakes within the last 50 years, and recent paleoseismological studies have also shown evidence for 7.0+ magnitude events occurring within the history of the fault system. The prominent faults within the system have very little surface expression, so available data of the orientation, trend, and extent of the fault system comes from seismic reflection data and are observed at depth within mine shafts throughout Illinois. The Wabash Valley faults are contained between the LaSalle Anticlinal Belt, a prominent Precambrian complex of en echelon folds to the north, and the junction of the east/west trending Cottage Grove and Rough Creek faults to the south. Most of the faults trend to the NE and can display vertical offsets into the hundreds of meters, penetrating the Precambrian basement rock at depth. Though there are some similarities in fault orientation and trend to the faults contained within the New Madrid Seismic Zone to the SE, the possible connection to and the tectonic setting of the Wabash Valley Seismic Zone is ambiguous. As part of the Earthscope project to map the crustal structure of the North American continent, data was passively collected along a 400-kilometer Flexible Array across Illinois and Indiana for the purpose of wide angle and deep seismic profiling in the form of tomography. Utilizing a new ray tracing methodology based on Dijkstra's algorithm, tomograms of the study area were created by inverting for Vp data collected from this array. Our tomograms show no evidence for a rift pillow system under the Wabash Valley as predicted, but there is evidence for a dipping fast anomalous zone that has been previously hypothesized from reprocessed COCORP data. We consider this COCORP reflector as an upper layer of eclogite above old, subducted crust with a higher impedance contrast than the surrounding mantle material. Further investigation is warranted, particularly with respect to ray directionality as rays arriving from north of the array do not travel through the fault system itself, whereas southern rays do. It is our hope that further studying including only southern ray paths may illuminate a supposed rift pillow system.
Author : Daniel Brazitis
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.:/5 (969 download)
Download or read book Northern Wabash Valley Seismic Zone and the La Salle Anticline Seismicity Determined by a Short Period Phased Array written by Daniel Brazitis and published by . This book was released on 2016 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wabash Valley Seismic Zone (WVSZ) has produced three moderate sized earthquakes greater than or equal to mb 5.0 in the past 50 years. The majority of Wabash Valley faults originate near the junction of the Rough Creek and Cottage Grove faults and extend northeastward along the Wabash River. These faults extend through the Paleozoic and into the Precambrian and are believe to be associated with the Reelfoot Rift. Two of these moderate sized earthquakes have occurred north of the terminus of the Wabash Valley faults that the WVSZ is commonly associated with. This suggests that other sources of seismicity exist. The La Salle anticline, a Precambrian basement feature, is oriented NW to SE just north of the termination of these faults. The La Salle anticline creates up to a 750 meter uplift in the above Paleozoic strata. This uplift creates faults within the Paleozoic strata and within the La Salle anticline. This study uses seismometers arranged in a phased array near the southern terminus of the La Salle anticline to analyze the seismicity of the region. Analyzing the seismicity of the region over a 6-month period found 834 events. The vast majority were determined to be mine blasts or otherwise human induced. Two small earthquakes (~M 1.0) located near the La Salle anticline. These earthquakes likely occur on faults associated with the anticline. The lack of earthquakes suggested the b-value of the La Salle region could be as low as 0.56. This is lower than the typical value of 1, but consistent with other intraplate regions and previous studies of the WVSZ finding values nearer 0.7.
Author : J. Wright Horton Jr.
Publisher : Geological Society of America
ISBN 13 : 0813725097
Total Pages : 444 pages
Book Rating : 4.8/5 (137 download)
Download or read book The 2011 Mineral, Virginia, Earthquake, and Its Significance for Seismic Hazards in Eastern North America written by J. Wright Horton Jr. and published by Geological Society of America. This book was released on 2015-01 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The 2011 Mineral, Virginia, earthquake, the largest to occur in the Appalachian region in more than 100 years, provided new seismologic, engineering, geologic, hydrologic, and geophysical data. This volume makes these results available for geoscientists, engineers, and decision makers interested in understanding earthquakes and seismic hazards in eastern North America and other intraplate settings"--
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ISBN 13 :
Total Pages : 678 pages
Book Rating : 4.:/5 (319 download)
Download or read book U.S. Geological Survey Circular written by and published by . This book was released on 1984 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (359 download)
Download or read book Tecumseh's Prophecy written by Geological Survey (U.S.) and published by . This book was released on 1990 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A plan for an intensified study of the New Madrid Seismic Zone.
Author : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Investigations and Oversight
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ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 ( download)
Download or read book The Earthquake Threat in the Central United States written by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Investigations and Oversight and published by . This book was released on 1990 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Science. Subcommittee on Research
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.0/5 ( download)
Download or read book Life in the Subduction Zone written by United States. Congress. House. Committee on Science. Subcommittee on Research and published by . This book was released on 2001 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paula Gori
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (359 download)
Download or read book Applications of Research from the U.S. Geological Survey Program, Assessment of Regional Earthquake Hazards and Risk Along the Wasatch Front, Utah written by Paula Gori and published by . This book was released on 1993 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents how pertinent information about earthquake hazards along the Wasatch Front, Utah, was transferred to researchers, public officials, design professionals, land-use planners, and emergency managers as part of the U.S. Geological Survey's effort to mitigate the effects of earthquake hazards.
Author : United States. Congress. Senate. Aeronautical and Space Sciences Committee
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.F/5 ( download)
Download or read book Earthquake Research and Knowledge written by United States. Congress. Senate. Aeronautical and Space Sciences Committee and published by . This book was released on 1975 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William R. Lund
Publisher : Utah Geological Survey
ISBN 13 : 1557917256
Total Pages : 13 pages
Book Rating : 4.5/5 (579 download)
Download or read book Proceedings Volume, Basin and Range Province Seismic-Hazards Summit II written by William R. Lund and published by Utah Geological Survey. This book was released on 2005 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a conference examining the siesmic activity in the Western United States, with special attention to dangerous, or potentially dangerous, earthquare activity. Sponsored and organized by the Western States Seismic Policy Council, the Federal Emergency Management Agency, and the Nevada Bureau of Mines and Geology.
Author : Judith A. Commeau
Publisher :
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.3/5 (243 download)
Download or read book Short Papers of the U.S. Geological Survey Uranium Workshop, 1990 written by Judith A. Commeau and published by . This book was released on 1991 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ivan Gynmun Wong
Publisher : Utah Geological Survey
ISBN 13 : 1557916667
Total Pages : 56 pages
Book Rating : 4.5/5 (579 download)
Download or read book Earthquake Scenario and Probabilistic Ground Shaking Maps for the Salt Lake City, Utah, Metropolitan Area written by Ivan Gynmun Wong and published by Utah Geological Survey. This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Salt Lake City metropolitan area is one of the most seismically hazardous urban areas in the interior of the western U.S. because of its location within the Intermountain Seismic Belt and its position adjacent to the active Wasatch fault. The elapsed time since the last large earthquake on the Salt Lake City segment of the Wasatch fault is approaching the mean recurrence interval based on the short-term paleoseismic record. In order to help raise the awareness of the general public and to help reduce earthquake risk in this area, we have developed nine microzonation maps showing surficial ground-shaking hazard. The maps are GIS-based and incorporate the site response effects of the unconsolidated sediments that underlie most of the metropolitan area within Salt Lake Valley. These nine maps, at a scale of 1:75,000, make up three sets, each consisting of three maps that display color-contoured ground motions in terms of (1) peak horizontal acceleration, (2) horizontal spectral acceleration at a period of 0.2 sec (5 Hz) and, (3) horizontal spectral acceleration at a period of 1.0 sec (1 Hz). One set of maps consists of deterministic or “scenario” maps for a moment magnitude (M) 7.0 earthquake on the Salt Lake City segment of the Wasatch fault. The two other sets are probabilistic maps for the two return periods of building code relevance, 500 and 2,500 years.
