References Upland Seismic Moment: Dreger, Douglas S., and Donald V. Helmberger, Complex Faulting Deduced from Broadband Modeling of the 28 February 1990 Upland Earthquake (ML = 5.2), Bulletin of the Seismological Society of America, Vol. 81, No. 4, pp 1129-1144, August, 1991. Location: Hutton, L.K., and L.M. Jones, Local Variations and Apparent Variations in Seismicity Rates in Southern California, Bulletin of the Seismological Society of America, Vol. 83, No. 2 pp 313-329, April, 1993. Moment, mechanism, strike, dip and rake: PEER-NGA Project Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search