The Pacific Northwest Seismograph Network PNW EARTHQUAKE INFORMATION Strong Motion Information

Magnitude	Date	Latitude	Longitude	Depth
6.8	2001/02/28 18:54 UTC	47.1525	-122.7197	52.40

Contents

Maps

Shake Map Instrumental Intensity, peak accelerations, peak velocities.

Outdated Strong Motion Parameters Click here for Update

See also: [ Text version ] [ More detailed version ]

Strong Motion Parameters for each component of each station

STA	COMP	Dist (km)	PGA (%g)	PGV (cm/sec)
MURR	ELE	12	5.7621	5.4440
MURR	ELN	12	4.4534	2.8727
MURR	ELZ	12	10.8793	2.1103
UPS	ELE	22	5.5066	7.4585
UPS	ELN	22	6.0686	5.6492
UPS	ELZ	22	5.4854	2.4324
PCFR	ELE	28	11.0287	13.1767
PCFR	ELN	28	13.0824	7.0978
PCFR	ELZ	28	14.0885	4.1459
TBPA	ELE	29	6.3899	10.8881
TBPA	ELN	29	6.4892	9.2587
TBPA	ELZ	29	4.6574	5.1942
PCEP	ELE	33	20.3869	13.4826
PCEP	ELN	33	21.3314	10.4620
PCEP	ELZ	33	15.4756	6.0600
KIMR	ELE	39	16.2800	9.5761
KIMR	ELN	39	15.0155	8.7221
KIMR	ELZ	39	7.0458	3.8006
PCMD	ELE	43	15.7629	9.4342
PCMD	ELN	43	11.0448	7.0103
PCMD	ELZ	43	6.7582	3.5916
GNW	SLE	46	15.9131	3.9985
GNW	SLN	46	8.1006	4.2376
GNW	SLZ	46	6.1948	4.2376
RBEN	ELE	51	10.9706	8.2590
RBEN	ELN	51	10.9340	7.4443
RBEN	ELZ	51	4.5480	2.8960
HOLY	ELE	53	6.7837	5.5279
HOLY	ELN	53	7.9608	7.6551
HOLY	ELZ	53	5.1697	4.9389
TKCO	ELZ	53	7.7742	6.6995
TKCO	ELN	53	17.0435	13.5065
TKCO	ELE	53	27.2808	21.8842
MPL	ELE	54	9.7708	7.3443
MPL	ELN	54	8.1218	7.7945
MPL	ELZ	54	4.9519	3.5493
KIMB	ELE	57	13.5246	18.2652
KIMB	ELN	57	9.2460	10.9508
KIMB	ELZ	57	4.7102	7.0607
SP2	ELE	57	30.7736	20.1153
SP2	ELN	57	18.9968	13.2044
SP2	ELZ	57	11.7024	5.6010
KITP	ELE	59	4.8238	5.6193
KITP	ELN	59	4.9300	7.4803
KITP	ELZ	59	2.6688	5.2385
RHAZ	ELE	59	4.5409	4.1628
RHAZ	ELN	59	3.9331	4.4836
RHAZ	ELZ	59	3.6510	1.7393
QAW	ELE	60	10.4653	8.3897
QAW	ELN	60	11.4009	11.8705
QAW	ELZ	60	7.6529	6.3960
LAWT	ELE	62	10.4470	14.1014
LAWT	ELN	62	8.8907	12.1953
LAWT	ELZ	62	5.0959	3.5384
RAW	ELE	63	17.2692	16.9713
RAW	ELN	63	12.4685	10.6601
RAW	ELZ	63	5.5912	4.3713
WISC	ELE	65	11.3350	10.1150
WISC	ELN	65	9.4362	6.6778
WISC	ELZ	65	3.4447	3.0764
SEA	ELE	65	6.7194	7.4367
SEA	ELN	65	7.0610	7.3752
SEA	ELZ	65	3.5447	3.0676
RWW	SLE	66	7.5285	5.8512
RWW	SLN	66	6.2679	4.2860
RWW	SLZ	66	4.3369	4.2861
KINR	ELE	67	7.5468	4.9980
KINR	ELN	67	4.9383	6.5310
KINR	ELZ	67	3.1434	2.7611
NOWS	ELE	70	7.9761	9.8671
NOWS	ELN	70	8.7143	9.7131
NOWS	ELZ	70	2.8744	3.8580
PNLK	ELE	71	3.4272	4.8039
PNLK	ELN	71	5.2579	4.2815
PNLK	ELZ	71	3.6240	3.3475
FINN	ELE	73	4.2829	4.1484
FINN	ELN	73	5.0782	8.4859
FINN	ELZ	73	2.9933	2.2145
BRKS	ELE	75	7.7101	7.6893
BRKS	ELN	75	10.3843	10.9947
BRKS	ELZ	75	4.5837	2.4127
ALCT	ELE	75	3.4694	5.1120
ALCT	ELN	75	3.5982	5.2421
ALCT	ELZ	75	2.9485	4.1967
ELW	ELE	75	5.6345	4.1192
ELW	ELN	75	5.5387	4.0568
ELW	ELZ	75	3.4791	2.5077
ELW	HHE	75	5.5937	1.2520
ELW	HHN	75	5.1238	1.2643
ELW	HHZ	75	3.5170	1.2208
CSEN	ELE	82	3.0000	3.1717
CSEN	ELN	82	3.2249	5.1696
CSEN	ELZ	82	1.7990	1.9915
LEOT	ELE	82	6.3702	6.3091
LEOT	ELN	82	7.5394	4.5621
LEOT	ELZ	82	3.9979	2.5002
EARN	ELE	83	5.7923	4.6989
EARN	ELN	83	4.7226	4.2047
EARN	ELZ	83	2.0057	1.8106
LON	SLE	83	3.7477	2.7262
LON	SLN	83	2.8322	1.6087
LON	SLZ	83	1.5992	1.7097
BEVT	ELE	92	4.8711	3.4934
BEVT	ELN	92	4.9543	4.4564
BEVT	ELZ	92	2.2583	2.0523
TTW	SLE	99	11.1794	8.4884
TTW	SLN	99	9.1473	5.2555
TTW	SLZ	99	7.1435	3.4471
MBPA	ELE	104	12.0099	5.2956
MBPA	ELN	104	15.4664	4.8905
MBPA	ELZ	104	4.9960	1.4898
SQM	BHE	106	1.9576	1.1260
SQM	BHN	106	1.3091	1.1531
SQM	BHZ	106	1.0024	0.8925
ALST	ELE	119	6.0839	4.8109
ALST	ELN	119	7.5772	5.1293
ALST	ELZ	119	2.3699	1.7748
ERW	ELE	145	0.9461	0.8639
ERW	ELN	145	0.8498	0.6474
ERW	ELZ	145	0.8471	0.7151
ERW	HHE	145	0.9507	0.8889
ERW	HHN	145	0.7971	0.5869
ERW	HHZ	145	0.7997	0.6414
ROSS	ELE	166	1.8721	1.2357
ROSS	ELN	166	2.5431	1.2719
ROSS	ELZ	166	1.3269	0.6439
KEEL	ELE	179	1.4429	2.3138
KEEL	ELN	179	1.3636	1.8225
KEEL	ELZ	179	0.7195	0.9027
SBES	ELE	181	0.6301	0.6421
SBES	ELN	181	0.5017	0.5225
SBES	ELZ	181	0.4800	0.3448
LANE	ELZ	347	0.0595	0.1365
LANE	ELN	347	0.0856	0.2216
LANE	ELE	347	0.0856	0.2414
ALVY	ELZ	351	0.0557	0.1205
ALVY	ELN	351	0.1153	0.2953

Parameter Definitions

• STA - The 3 or 4 letter station designation.
• COMP - Component flag. Each station has a tri-axial accelerometer for measuring motions in the vertical (Z), north-south (N) , and east-west (E) directions. The "EL" part of the component indicates that the data are from an accelerometer with a high sample rate (here 100 samples per second). A "BH" or "HH" indicates that the data are from a broadband velocity sensor. (The "HH" components usually have a 100 sps sample rate and the "BH" components are usually 40 or 50 sps).
• Dist - Surface distance from the earthquake epicenter to the recording station.
• PGA - Peak ground acceleration. The peak value from a single component (no vector sums). Values are expressed in percent g (acceleration due to gravity, 32 ft/sec/sec or 9.81 m/sec/sec).
• PGV - Peak ground velocity; determined by integrating the acceleration time-series using the trapezoidal rule.

Station Information

List showing station coordinates and sensor information.
Station Maps

The information presented in this document is preliminary. It will be modified after additional analysis of the accelerograms.

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Dept. of Earth and Space Sciences.