Individual Event Report
| Event #481 - Summary, and parameter estimates with source IDs |
| This is an aftershock of the preceding event. The underlying information here is a single observation from the weather observer in Marblemount. Bradford, 'Earthquake History of the US', and the WPPSS catalog mistakenly give this time for the main shock. |
| 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 |
| 1915 |
8 |
18 |
10 |
|
A |
|
48.50 |
121.40 |
|
|
|
Marblemount |
WA |
III |
RF |
|
|
|
| TAWA - 1142 |
USEQS - 949 |
- |
- |
MWR - 2225 |
- |
Underlying Source Material
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2225 |
Monthly Weather Review |
1915 |
V. 43, p. 416 |
Transcription: Date: August 18, 1915
Time (Greenwich Civil): 18:00
Location: Marblemount, Wash.
Latitude (deg., min.): 48 32
Longitude (deg.,min.): 121 26
RF Intensity: 3
Number of Shocks: 1
Duration (sec.): 1
Sounds: Faint
Remarks:
Observer: Henry Soll |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 949 |
U. S. Dept. of Commerce, 1973, Earthquake History of the United States, V. 41-1, revised ed., pp. 89-96 |
1973 |
|
| Transcription: Aug. 18 10:00 Northwestern Washington 48.5 121.4 30,000 V 3-25 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2512 |
Washington Public Power Supply System, Preliminary
Safety Analysis Report, Ammendment 23,
WPPSS Nuclear Project No. 1, 1300 MW Nuclear Power Plant, Vol. 2A. |
1977 |
Table 2R-E1 |
Transcription: 59 1915 Aug 18 18:00 Marblemount v TA(265)
1915 Aug 18 18:00 48.50N., 121.40w. 30,000 EP(75,78)
1915 Aug 18 18:00 48 32'N., 121 48.526-W. 30,000 BR(147)
1915 Aug 18 18:00 48.50N., 121.40w. NE(36)
EPB 2 1918 Feb 04 20:35 5loN., 1180W. ml(130,131) Recorded at (VIC)
Victoria,
British Columbia. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1142 |
Townley, S. D. and M. W. Allen, 1939, Descriptive Catalog of Earthquakes of the Pacific Coast of the United States 1769-1928, Chap. III Earthquakes in Washington, 1883-1928, BSSA, V. 29, No. 1, pp. 259-268 |
1939 |
|
| Transcription: 1915 August 18. 6:04 a.m. V. Marblemount, Skagit Co. Felt at Lakeside, Chelan Co., Laurier, Ferry Co.; Glacier, Whatcom Co.; Okanogan, Okanogan Co.; and at Victoria, B. C., and Seattle. At Marblemount an aftershock was felt at 10 a.m.-MWR, 43, 416; BSSA, 5, 157; Reid's Scrapbook, 4, 81. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 310 |
Bradford, Donald C., 1935, Seismic History of the Puget Sound Basin, BSSA, V. 25, No. 2, pp. 138-153 |
1935 |
|
| Transcription: 1915 August 18, 10:00 a.m.; 48 degrees 32' north and 121 degrees 26' west; felt from Seattle to Laurier and from Victoria to Okanogan; felt area approximately 30,000 square miles. |
| |
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