August 13, 1978 Earthquake: Southern, California, United States

1978. Aug. 13. Near Goleta, Santa Barbara County, Calif. This moderate earthquake injured 65 people and caused property damaged estimated at $12 million. The most severe damage occurred at Santa Barbara and at the University of California Santa Barbara campus at Goleta. (reference #542)

There is some dispute over the exact magnitude of this earthquake. Surely, the amount of damage it caused seems excessive for its size; however, it should always be cautioned that the magnitude of an earthquake and the damage it causes by no means have an exact correlation, though certainly the two are related. Whatever the case, the 1978 Santa Barbara earthquake was a certainly a damaging quake. Some 65 people sustained injuries (mostly minor), and roughly $15 million property damage occurred. Near Goleta, a freight train was derailed by the shock, several buildings were damaged, and there was minor damage to a bridge. One roof collapsed in Santa Barbara (though the building was of poor construction), some walls were cracked, and other minor damage was reported. This quake and its aftershocks would have been more poorly located had it not been for an amazing coincidence -- four new seismographs were installed in the area near the epicenter just one day before the earthquake happened! From the data gathered, there is reason to suspect that this quake occurred on a shallow, north-dipping decollement underneath the Santa Barbara area. Its depth and focal mechanism are very similar to that of the Whittier Narrows earthquake, for which a similar model has been suggested. LOCATION: 34° 18' N, 119° 42' W about 1 km (less than 1 mile) southeast of Santa Barbara; MAGNITUDE: ML5.1 (reference #13510)