NEHRP Clearinghouse

displaying 1 - 3 results in total 3

• Helmberger, D. V.; Harkrider, D. G.
  Modeling Earthquakes with Generalized Ray Theory.
  Air Force Office of Scientific Research, Bolling AFB, DC, January 1978, 21 p.
  Identifying Number(s): CONTRIB-2959
  Keywords: Elastic waves; Iterations; Ray theory; Earthquakes; Faults (Geology); Numerical analysis; Cagniard deHoop technique; Wave propagation; Reprints; Seismic waves

• Ebel, J. E.; Helmberger, D. V.
  P-Wave Complexity and Fault Asperities: The Borrego Mountain, California, Earthquake of 1968.
  Air Force Office of Scientific Research, Bolling AFB, DC., November 13, 1980, 27 p.
  Keywords: Teleseismic waves; Synthetic seismograms; Earthquakes; Time domain; Modeling; Reprints; Fault asperities; P waves; Seismic waves

• Stewart, G. S.; Helmberger, D. V.
  The Bermuda Earthquake of March 24, 1978: A Significant Oceanic Intraplate Event.
  Air Force Office of Scientific Research, Bolling AFB, DC., July 29, 1980, 12 p.
  Identifying Number(s): CONTRIB-3337
  Keywords: Primary waves (Seismic waves); Earthquakes; Secondary waves; Plate tectonics; Atlantic Ocean; Oceanic crust; Reprints; Tectonics; Plates