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Tuesday, April 14, 2020 | History

2 edition of Historical seismicity in Arizona found in the catalog.

Historical seismicity in Arizona

Susan M. DuBois

Historical seismicity in Arizona

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  • 2 Currently reading

Published by The Commission, Available from GPO Sales Program, Division of Technical Information and Document Control, U.S. Nuclear Regulatory Commission, National Technical Information Service in Washington, D.C, Springfield, Va .
Written in English

    Subjects:
  • Earthquakes -- Arizona -- History -- Sources.,
  • Seismology -- Arizona -- Periodicity.

  • Edition Notes

    Statementprepared by S.M. DuBois, M. L. Sbar, T.A. Nowak ; prepared for Division of Health, Siting and Waste Management, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, under contract no. NRC-04-79-212.
    ContributionsSbar, M. L., Nowak, T. A., U.S. Nuclear Regulatory Commission. Division of Health, Siting, and Waste Management, University of Arizona. Bureau of Geology and Mineral Technology.
    The Physical Object
    Paginationx, 199 p. :
    Number of Pages199
    ID Numbers
    Open LibraryOL16511385M

    Because Joshua Tree National Park is near a very seismically active area of southern California, earthquakes within or near the park present a significant seismic hazard. Geologic and earthquake displays, brochures, and other information can be used to effectively communicate interesting and important facts and concepts to park visitors. Additional information on these techniques and examples of their application can be found in Yeats et al. These data can be used for many purposes, including determining the frequency of occurrence of earthquake activity, evaluating earthquake risk, interpreting the geological and tectonic activity of the area, and providing an effective vehicle for public information and education.

    Two of these clusters correspond with isolated seismic sequences Pejibaye and Puriscal and the other one with a zone of permanent seismicity La Lucha. Scientific research designed to better understand the earthquake activity and geological evolution of the area may also be important. Several historically significant publications on U. Given the long recurrence intervals for individual faults in central and southeastern AZ, faulting in the past 20 k.

    These data can be used for many purposes, including determining the frequency of occurrence of earthquake activity, evaluating earthquake risk, interpreting the geological and tectonic activity of the area, and providing an effective vehicle for public information and education. Additional geology and tectonic information on national parks can be found in Harris et al. The Arizona Geological Survey maintains an active catalogue of earthquake activity that includes events recorded by the Arizona Broadband Seismic Network. Analysis and Statistics of Earthquake Activity Earthquake data for a local area from a local seismograph network, or online data from regional or global networks can be analyzed at very low cost and effort. The smallest event detected was a magnitude 1.


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Historical seismicity in Arizona by Susan M. DuBois Download PDF Ebook

Shaking from Cucapah aftershocks continued to dominate the record well into the summer. Of course, installing and operating such a network involves the significant costs of purchasing and installing the instruments, as well as maintenance and operation, which requires substantial trained staff.

This relationship Historical seismicity in Arizona book found to be valid for regional and local seismic source zones as well. These currently active plate tectonic processes affect the entire western United States.

With a little extra effort, seismicity maps of the local area can be prepared see method 1, above and compared with fault maps and other geological and geophysical maps for tectonic interpretation.

Bilek et al. With only a small effort, one can investigate the earthquake history and hazards of a national park and surrounding areas.

Two of these clusters correspond with isolated seismic sequences Pejibaye and Puriscal and the other one with a zone of permanent seismicity La Lucha. Faults in north-central and southwesternmost Arizona have somewhat longer recurrence intervals ca.

Onshore, in front of this zone is the seismic anomaly of Central Costa Rica. These events were widely felt throughout northern Arizona. Yeats, R. Seismograms from seismic monitoring stations can be used to determine the location, origin time, and magnitude as well as other characteristics of earthquakes.

historic seismicity

Additional strong evidence for the correlation between historical earthquakes and faulting comes from isoseismal maps. Conclusions regarding the distribution and timing of late Quaternary faulting are based on 1 estimated ages of soils Historical seismicity in Arizona book on correlation with soils near Las Cruces in southern New Mexico; 2 use of surface age-fault offset relationships to constrain the age of most-recent fault movement and to estimate the frequency of movement along individual faults; and 3 morphologic analyses of fault scarps to estimate their ages.

Shown as blue lines are faults active in the past 2. Some earthquakes occur in plate boundary or intraplate regions associated with other dynamic geologic processes such as volcanic and hydrothermal activity, reactivation of ancient faults, or crustal loading e.

The book contains maps of the regions Historical seismicity in Arizona book by the larger earthquakes, and a general table of the events associated with the little-known seismic history of a fast-developing area of the Eastern Mediterranean.

By using seismograms from a few or many monitoring stations, one can determine the origin time and location of the event and estimate its magnitude M —a measure of energy released by an earthquake. Seismograph station in the Yellowstone National Park area Several cost effective methods for seismic monitoring studies that do not require substantial personnel or experts to conduct the studies are listed in Table 2 and described above.

The detailed earthquake monitoring of the local network has also allowed analysis of earthquake swarms that are characteristic of volcanic systems; further, the monitoring has helped determine earthquake mechanisms that yield important information on the directions of principal stresses and the type of active faulting in the area Waite and Smith, These data can be used for many purposes, including determining the frequency of occurrence of earthquake activity, evaluating earthquake risk, interpreting the geological and tectonic activity of the area, and providing an effective vehicle for public information and education.

Ansell, R. Temporal and spatial clusters of paleoseismic activity apparently have occurred over intervals of several thousand years in portions of central Nevada. Earthquake Risk Estimation Earthquake risk is usually evaluated using the historical seismicity record that provides information on the probability of occurrence such as the frequency-magnitude relation for the area of earthquakes of various magnitudes, and sometimes, an estimate of the maximum magnitude earthquake that is likely to occur.

In the Talamanca Cordillera the seismicity is spread all over the area but there are also dense clusters at Pejibaye, south of Cartago and Santiago de Puriscal Figure 6.

Seismotectonic and the Hipothetical Strike

They apparently increase intraplate and interplate earthquakes onshore and therefore, in absence of them the seismic activity in Central Costa Rica would probably be lower than the current activity.

There are Historical seismicity in Arizona book number of methods available for this purpose, Historical seismicity in Arizona book precise leveling and surveying, strain and tilt meter recording, detailed geologic mapping of active tectonic features, GPS Global Positioning System monitoring, and satellite techniques such as satellite laser ranging and satellite radar interferometry.

Additional geology and tectonic information on national parks can be found in Harris et al. Thousands of earthquakes are recorded and located by seismograph stations every year. Triangles indicate volcanoes.Induced seismicity refers to typically minor earthquakes and tremors that are caused by human activity that alters the stresses and strains on the Earth's induced seismicity is of a low magnitude.

A few sites regularly have larger quakes, such as The Geysers geothermal plant in California which averaged two M4 events and 15 M3 events every year from to Seismic Hazard Estimate from Background Seismicity in Southern California Model and Hazard Calculation Our model uses the historical seismicity with magni- tudes from 4 to to obtain the a-value distribution over the study area between ° W to ° W and 32 ° N to 36 °File Size: KB.

is brought to you by World History Group, the world's largest publisher of history magazines. contains daily features, photo galleries and over 5, articles originally published in our various g: seismicity.Pdf seismicity is occurring at the m high Nurek dam in Tadjikistan, USSR.

An intense burst of seismicity accompanied the second burst of seismicity accompanied the second stage of filling of the reservoir from to m during August to December Hypo-central locations and fault.About this Item: Arizona Earthquake Information Center, Flagstaff, Arizona, Soft Cover.

Condition: Very Good. Edition not stated. Issued May 7, 4to. 77 pages. Illustrated with maps and drawings. Seven folded plates printed on eight sheets stored in map pockets at the end of the book. References.

Glossary. Spiral-bound.seismicity data Figure 1. Active ebook and seismicity of Arizona ebook on shaded relief. A) Entire state with active faults (from Machette, USGS) and major city outlines in beige.

White rectangle indicates the location of B. B) Active faults, seismicity, cities, highways, and railroads for north-central Arizona. The seismicity is from theFile Size: 5MB.