Comparing the 1906 Earthquake and the 1989 Loma Prieta Earthquake Shelter Cove
Duration Magnitude Rupture length on fault
190
Deaths
Point Arena
1906 Earthquake
Loma Prieta Earthquake, 1989
40 Seconds
15 seconds
7.7–8.3
7.1 (Richter), 6.9 (Mw)
290 Miles
25 Miles
>3,000
62
up
6R
Sacramento
Santa Rosa
e
tur San Francisco
Berkeley
Oakland
Fremont Sunnyvale Santa Clara
ta rie a P ure LomRupt
San Jose
Salinas
The same seismograph, located at Gottingen, Germany, recorded both the 1906 Earthquake and the Loma Prieta Earthquake. This diagram indicates that the 1906 Earthquake released about sixteen times more energy than the Loma Prieta. Research suggests that the next 1906-type earthquake will be similar in intensity as the Loma Prieta, but will last three or more times longer: 45–60 seconds.
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