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Wednesday, July 22, 2020 | History

3 edition of In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region found in the catalog.

In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region

In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region

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  • 39 Currently reading

Published by The Survey in [Reston, Va.?] .
Written in English

    Subjects:
  • Seismology -- California -- Los Angeles.

  • Edition Notes

    Statementby Thomas E. Fumal, James F. Gibbs, and Edward F. Roth ; United States Department of the Interior, Geological Survey.
    SeriesOpen-file report -- 82-833., Open-file report (Geological Survey (U.S.)) -- 82-833.
    ContributionsGibbs, James F., Roth, Edward F., Geological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18036289M

    S21B Abstract Title: Path-Dependent Travel Time Prediction Variance and Covariance for a Global Tomographic P- and S-Velocity Model, S51F Abstract Title: Developing Path-Dependent Uncertainty Estimates for use with the Regional Seismic Travel Time (RSTT) Model, S51F Abstract Title: Detecting and Locating Seismic Events Without Phase. Three-component broadband ground motion histories are computed at sites in the greater Los Angeles metropolitan area by superposing short-period (– s) empirical Green’s function synthetics on top of long-period (> s) spectral element synthetics.

    Minute Quadrangle, Los Angeles County, California: Department of Conservation (formerly Division of Mines and Geology), Seismic Hazard Zone Report California Geological Survey, , Earthquake Zones of Required Investigation South Gate Minute Quadrangle, Los Angeles County, California, Ma File Size: 6MB. Borehole Deviation 4. Aquifer Test Methods Ground-Water Level/Pressure Measurement Steel Tape Electric Probe Air line Pressure Transducers Audible Methods Ultrasonic Float Methods Electromechanical Artesian Aquifer Measurement In Situ Piezometers Hydraulic Conductivity (Shallow .

    Department of Civil Engineering University of Southern California Los Angeles, California Bridge Engineering: Seismic Design to other in situ test measurements such as shear wave. Student Contributions - HowTo Present. This is a contributions list showing only those papers which have EAS graduate or undergraduate students as authors or .


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In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region Download PDF EPUB FB2

Get this from a library. In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region. [Thomas E Fumal; James F. In the current program seismic velocities have been measured at 59 locations 1n the San Francisco Bay Region. This report is the third in a series of Open-File Reports and describes the in-situ velocity measurements at locations 35– At each location seismic travel times are measured in drill holes, normally at m intervals to a depth of.

INTRODUCTION The amount of damage resulting from the great California earthquake of Apvaried significantly for different parts of the San Francisco Bay region. Currently a program is in progress to measure seismic velocities in the San Francisco Bay region at an estimated sites.

At each site seismic travel times are measured in drill holes, normally at m intervals to a depth of 30 m. Geologic logs are determined from drill hole cuttings, undisturbed samples, and penetrometer samples. In-situ measurements of seismic velocity at 27 locations in the Los Angeles, California region.

Studies conducted in the San Francisco Bay Region (Gibbs, Fumal and Borcherdt, ) have shown that average shear-wave velocity can be readily tied to quantitative estimates of ground motion such as ground amplification and earthquake intensity. An Alternative Procedure for Seismic Analysis and Design of Tall Buildings Located in the Los Angeles Region Los Angeles Tall Buildings, Structural Design Council Los Angeles   Seismic studies including ReMi, MASW and seismic refraction methods were performed at nine locations by the Geophysical Engineering Team of Ankara University, Turkey (Başokur et al) to evaluate the shear wave velocity profile in the study site.

The locations of these boreholes, SCPTs and seismic measurements are shown in figure 1 Cited by: The seismic data used in this study are obtained from the Northern California Earthquake Data Center (NCEDC, ), including first-arrival picks and waveform data for both compressional (P) and shear (S) waves of all local earthquakes between January and August in the study area ().The data set consists ofearthquakes (gray dots in Fig.

2) with over million Cited by: 2. Central California [4] Figure 1 illustrates crustal stress orientations in central California obtained from focal mechanism inversions [Townend and Zoback, ] and a variety of sources represented in the World Stress Map Database, most notably stress‐induced wellbore breakouts in oil and gas wells [Fuchs and Müller, ].The dashed trajectories are interpolations of S.

The overall objective of this study was to develop probabilistic seismic hazard estimates for the coastal and offshore area of Ventura, Los Angeles and Orange counties for use as a basis for the University of Southern California (USC) to develop physical models of tsunami for the coastal regions and by the California State Lands Commission (SLC) to develop regulatory standards.

7 Seismic Design of Reinforced Concrete Mat Foundations: A Guide for Practicing Engineers Soil Properties and Strain-Dependency The most important soil parameter for the identification of the subgrade and modeling of the mat foundation is an elastic, low-strain parameter, such as the Young’s Modulus or Shear Modulus, Eo or Go, that can.

Niemi, N. & Clark, M. Long-term exhumation rates exceed paleoseismic slip rates in the central Santa Monica Mountains, Los Angeles County, California.

Geology 46 Cited by: 1. flow height and velocity at locations along the Pacific coast and utilizes source-to-site physics- Caltrans; and Jonathan Stewart, University of California Los Angeles. More details about the project are provided in Chapter 5. San Francisco and Los Angeles), the seismic risk mitigation of high-speed rail bridges is a topic of major.

Full text of "City of Los Angeles Building Code, Volume 1" See other formats. Los Angeles) will sustain about fires and a total burnt area of about million sq ft. of building floor area. On average this is aboutsq. of building floor area.

An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic uakes can range in size from those that are so weak that they cannot be felt to those violent enough to propel objects and people into the air, and wreak destruction across entire.

Seismicity. Seismicity is defined by a number of seismic events occurring within a given volume of rock over a certain period of time and is quantified using mainly the four largely independent quantities: (1) average time between events, (2) average distance between consecutive events, (3) cumulative seismic potency or seismic moment, and (4) cumulative radiated energies.

Estimated map of the Rayleigh wave group velocity at s constructed from dispersion analysis [Herrmann, ] based on a 3D velocity model for the Southern California region [Kohler et al., ].

Geological structures labels and velocity color scale are similar to Figure 5. Department of Civil Engineering University of Southern California Los Angeles, CAU.S.A. ABSTRACT The modern techniques for digitization of strong-motion accelerograms and subsequent data processing were first developed in the late s and early s, at which time the only available digitization technology was semi-automatic.

This book presents articles covering a wide spectrum of topics in geotechnical engineering, including properties of soils, unsaturated soil mechanics, ground improvement, liquefaction and seismic studies, soil-structure interaction and stability analysis of man-made and natural slopes.

FIGURE Trend of thermosteric sea level (mm yr-1) for – (left) and – (right), based on an updated version of data from Ishii and Kimoto ().SOURCE: Courtesy of Masayoshi Ishii, Japan Meteorological Research Institute.

in sea level of about 0– mm yr-1 from torather than a fall (Bindoff et al., ). This difference suggests that the .For example, in the Los Angeles Region Seismic Experiment (LARSE), researchers used air guns and explosions to construct images of the subsurface structure that may lead to a better understanding of earthquake hazards in southern California (Figure ).

These systems have proved very effective in delineating fault planes within sedimentary ba.THE NATURE OF EARTHQUAKE GROUND MOTION Bruce A. Bolt, Professor Emeritus, of Seismology, University of California, Berkeley, California and the direction of the source velocity.

Instrumental measurements show that such by many strong motion accelerometers in Los Angeles and the San Fernando Valley area.