NEHRP Clearinghouse

displaying 1 - 5 results in total 5

• Catchings, R. D.; Goldman, M. R.; Steedman, C. E.; Gandhok, G.
  Velocity Models, First-Arrival Travel Times, and Geometries of 1991 and 1993 USGS Land-Based Controlled-Source Seismic Investigations in the San Francisco Bay Area, California: In-Line Shots.
  November 19, 2004, 36 p.
  Identifying Number(s): USGS/OFR-2004-1423
  Keywords: Tomography; Tables (Data); Data collection; Geometries; Seismic velocity; Seismic data; California; In-line shots; Travel time; San Francisco Bay area; Seismic waves

• Lienert, B. R.; Berg, E.; Frazer, L. N.
  Hypocenter: An Earthquake Location Method Using Centered, Scaled, and Adaptively Damped Least Squares.
  June 1986, 15 p.
  Identifying Number(s): HIG-CONTRIB-1712
  Keywords: Damping; HYPOCENTER model; Time; Mean; Iterations; Earthquakes; Equations; Velocity; Adaptive systems; Epicenters; Variables; Seismic velocity; Seismic data; Seismic arrays; Least squares method; Arrival time; Algorithms; Reprints; Position (Location); Travel time

• Gibbs, J. F.; Tinsley, J. C.; Boore, D. M.
  Borehole Velocity Measurements at Five Sites That Recorded the Cape Mendocino, California Earthquake of 25 April, 1992.
  January 2002, 58 p.
  Identifying Number(s): USGS/OFR-02-203
  Keywords: ; Ground motion; Velocity measurement; Boreholes; Earthquakes; Geological surveys; Acceleration; California; Data sources; Seismometers; Travel time; Seismic waves

• Brocher, T. M.; Ruebel, A. L.
  Compilation of 29 Sonic and Density Logs from 23 Oil Test Wells in Western Washington State.
  January 1998, 66 p.
  Identifying Number(s): USGS-OFR-98-249
  Keywords: Washington (State); Ground motion; Exploratory wells; Density; Earthquakes; Volcanic rocks; Seismic velocity; Three dimensional models; Oil test wells; Data compilation; Travel time; Stratigraphy

• Toomey, D. R.
  Tectonics and Three-Dimensional Structure of Spreading Centers: Microearthquake Studies and Tomographic Inversions.
  National Science Foundation, Washington, DC.; Office of Naval Research, Arlington, VA., September 1987, 214 p.
  Identifying Number(s): WHOI-87-35
  Keywords: Global; Theses; Physical properties; Earthquakes; Rift; Accretion; Morphology; Tomographic inversion; Tectonics; Travel time; Microearthquakes; Mid-Atlantic Ridge