Individual Event Report
| Event #323 - Summary, and parameter estimates with source IDs |
| This event was seaward of Eureka. The magnitude cited is from "The San Andreas Fault System, California, Chapter 6: 'Earthquake History, 1769-1989' by William L. Ellsworth, USGS Professional Paper 1515. 1990." Other magnitudes estimates for this earthquake are as low as 5.7. |
| TIME |
LOCATION |
MAGNITUDE |
MAX. INTENSITY |
FELT AREA |
| YR |
MO |
DAY |
HR |
MIN |
AM/PM |
Time
Type |
LAT(N) |
LON(W) |
DEP
(km) |
MAG |
Mag
Type |
Felt
Plc. |
Felt
St. |
Inten-
sity |
Int.
Type |
Felt
Area |
Felt
Area
Int. |
Felt
Area
Units |
| 1899 |
4 |
16 |
2 |
41 |
|
P |
41.00 |
124.00 |
|
7.00 |
MS |
Eureka |
CA |
|
|
|
|
|
| USEQS - 2535 |
USEQS - 2535 |
- |
MISC - 2540 |
USEQS - 2535 |
- |
Underlying Source Material
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2540 |
The San Andreas Fault System, California, Chapter 6: "Earthquake History, 1769-1989" by William L. Ellsworth, USGS Professional Paper 1515. 1990 |
1990 |
p. 169, 185 |
Transcription: April 16, 1899 (M=7)
Little is known about the large earthquake of April 16, 1899, with an epicenter seaward of Eureka, where it was described as "one of the severest shocks of earthquake ever experienced." Toppozada and others (1981) corrected the origin time of this event and assigned a nearshore epicenter and an MI of 5.7. The earthquake was assigned an epicneter in the Gulf of Alaska by Milne (1901) on the basis of traveltime of the maximum amplitude from the five reporting stations; however , a California location satisfies his data equally well. The absence of significant damage along the coast suggests an epicenter well out to sea. An instrumental magnitude (MS) of 7.0 is derived from the surface-wave amplitudes reproted by Milne (see Abe and Noguchi, 1983).
From Table 6.1:
1899/4/16, GMT 13:40, M=7, 41N?, 126W?, West of Eureka, MS=7.0, MI=5.7 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2535 |
U. S. Dept. of Commerce, 1973, Earthquake History of the United States, V. 41-1, revised ed., pp. 137-189 |
1973 |
|
Transcription: 1899, April 16, Eureka. This long-duration shock caused some damage to a lumber mill. Felt at Hydesville and Crescent City.
1899, April 16, 02:41 PST, Eureka, 41N, 124W, |
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