Coseismic Displacements of the 1992 Landers Earthquake Sequence

Kenneth W. Hudnut, Yehuda Bock, Michael W. Cline, Peng Fang, Y. Feng, Jeffrey T. Freymueller, Xiaobin Ge, Karl W. Gross, David D. Jackson, Nancy E. King, Shawn Larsen, Zheng-Kang Shen, Michael Lisowski, J. Zhang, & Jerry Svarc

Published June 1994, SCEC Contribution #94

We present co-seismic displacement vectors derived from Global Positioning System (GPS) measurements of 92 stations in southern California. These GPS results are combined with five well-determined GPS displacement vectors from continuously tracking stations of the Permanent GPS Geodetic Array, as well as line-length changes from USGS Geodolite and two-color laser trilateration observations, to determine a self-consistent set of geodetic data for the earthquake. These combined displacements are modeled by an elastic dislocation representation of the primary fault rupture planes. On average, the model residuals are about twice the estimated measurement errors.

Hudnut, K. W., Bock, Y., Cline, M. W., Fang, P., Feng, Y., Freymueller, J. T., Ge, X., Gross, K. W., Jackson, D. D., King, N. E., Larsen, S., Shen, Z., Lisowski, M., Zhang, J., & Svarc, J. (1994). Coseismic Displacements of the 1992 Landers Earthquake Sequence. Bulletin of the Seismological Society of America, 84(3), 625-645.