Our work is funded by NFS (EAR-0337206 and EAR-0538116) and the USGS NEHRP (Tokachi-Oki earthquake). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of NSF.

Please send questions and comments to kristinem.larson at gmail.com

Archived Results at IRIS:

• Denali and Tokachi-Oki

Big Quakes:

• 2003 2004 2005 2006

Useful publications:

• Larson, K., P. Bodin, and J. Gomberg, Using 1 Hz GPS Data to Measure Deformations Caused by the Denali Fault Earthquake, Science, Vol. 300, 1421-1424, 2003. reprint (pdf).
  Online supplement can be downloaded directly from Science

• Gomberg, J., P. Bodin, K. Larson, H. Dragert, Earthquakes nucleated by transient deformations - a fundamental process evident in observations surrounding the M7.9 Denali Fault Alaska Earthquake, Nature, 427, 621 - 624, (12 Feb 2004) (pdf).

• Ji, C., K. M. Larson, Y. Tan, K. Hudnut and K. Choi, Slip history of the 2003 San Simeon Earthquake constrained by combining 1-Hz GPS, strong motion, and teleseismic data, Geophys. Res. Lett., Vol. 31, No.17, L17608, 10.1029/2004GL020448, 2004, (pdf).

• Miyazaki, S., K. Larson, K. Choi, K. Hikima, K. Koketsu, P. Bodin, J. Haase, G. Emore, and A. Yamagiwa, Modeling the rupture process of the 2003 Tokachi-Oki earthquake using 1-Hz GPS data, Geophys. Res. Lett., Vol.31,No.21,L21603, 2004, (pdf).

• Choi, K., A. Bilich, K. Larson, and P. Axelrad, Modified sidereal filtering: Implications for high-rate GPS positioning Geophys. Res. Lett., Vol. 31, No.22, L22608, 2004, (pdf).

• Agnew, D. C. and K. M. Larson, Finding the Repeat Times of the GPS Constellation, GPS Solutions, (pdf), 2006.

• Emore, G., J. Haase, K. Choi, K. M. Larson, and A. Yamagiwa, Recovering absolute seismic displacements through combined use of 1-Hz GPS and strong motion accelerometers, BSSA, Vol 97:2, 357-378, 2007 (pdf).

• Larson, K., A. Bilich, and P. Axelrad, Improving the precision of high-rate GPS, J. Geophys. Res., 112, B05422, doi:10.1029/2006JB004367, 2007 (pdf)

• Bilich, A., J. Cassidy, and K. M. Larson, GPS Seismology: Application to the 2002 Mw=7.9 Denali Fault Earthquake, BSSA, April 2008; v. 98; no. 2; p. 593-606; doi: 10.1785/0120070096, (pdf).

• Larson, K., GPS Seismology, J. Geodesy, special issue for the IGS, accepted April 24, 2008, (pdf).

Background Information on High-Rate GPS