April 21, 1948 Hispaniola Earthquake Archive (late aftershock):

4/21/1948 20:22 69.5W, 19.25N, 40km, Mw=7.1 Along North Coast of the Dominican Republic

1. Seismograms
Selected seismograms at the Denver Federal Center from this earthquake were scanned as part of the IASPEI Scanning Project (small PDF versions of large .tif files lilnked below).

link to compressed .tif file format) (includes little .jpg "thumbnails").

2. Selected Information
Strong earthquake along the north coast of the Dominican Republic. This event continues a ten-year sequence of major earthquakes along the northern coast of the Dominican Republic and Puerto Rico. Events studied by Lynch and Bodle (1948), Kelleher et al. (1973), Russo and Villaseñor (1995), and Dolan and Wald (1998).

3. References

Dolan, J. F., and D. J. Wald, The 1943 – 1953 north-central Caribbean earthquakes: Active tectonic setting, seismic hazards and implications for Caribbean- North America plate motions, in Active Strike- Slip and Collisional Tectonics of the Northern Caribbean Plate Boundary Zone, edited by J. F. Dolan and P. Mann, Spec. Pap., Geol. Soc. Am., 326, 143 – 169, 1998.

Kelleher, J., L. Sykes and J. Oliver (1973) Possible criteria for predicting earthquake locations and their application to major plate boundaries of the Pacific and the Caribbean, J. Geophys. Res., 78, 2547-2585.

Lynch, J. and R. Bodle, 1948, The Dominican Earthquakes of August, 1946, Bul. Seismol. Soc. Amer., 38, 1-17

Russo, R. M., and Villaseñor, A., 1995, The 1946 Hispaniola earthquake and the tectonics of the North America Caribbean plate boundary, northeastern Hispaniola: J. Geophys. Res., 100, 6265-6280

(Last Updated: January 3, 2010) (mfd)