The Pacific Northwest Seismograph Network PNW EARTHQUAKE INFORMATION Strong Motion Information

Magnitude	Date	Latitude	Longitude	Depth
4.0	2001/07/22 15:13 UTC	47.0822	-122.6830	50.26

Contents

Maps

Shake Map Instrumental Intensity, peak accelerations, peak velocities.

Strong Motion Parameters

Strong Motion Parameters for each component of each station

STA	COMP	Dist (km)	PGA (%g)	PGV (cm/sec)
PCFR	ELE	21	1.3547	0.3199
PCFR	ELN	21	0.7605	0.1325
PCFR	ELZ	21	0.3740	0.0521
UPS	ELE	25	0.0657	0.0169
UPS	ELN	25	0.0713	0.0210
UPS	ELZ	25	0.0931	0.0239
PCEP	ELE	30	0.9938	0.2073
PCEP	ELN	30	0.3677	0.0784
PCEP	ELZ	30	0.3357	0.0503
TBPA	ELE	31	0.1091	0.0590
TBPA	ELN	31	0.0868	0.0403
TBPA	ELZ	31	0.1404	0.0315
PCMD	ELE	36	0.5340	0.1109
PCMD	ELN	36	0.5636	0.1523
PCMD	ELZ	36	0.2949	0.0564
KIMR	ELE	47	0.2923	0.0795
KIMR	ELN	47	0.2335	0.0480
KIMR	ELZ	47	0.1429	0.0272
RBEN	ELE	54	0.0727	0.0206
RBEN	ELN	54	0.0840	0.0259
RBEN	ELZ	54	0.1666	0.0323
GNW	BHE	55	0.2336	0.0387
GNW	BHN	55	0.2135	0.0367
GNW	BHZ	55	0.0832	0.0193
GNW	SLE	55	0.2362	0.0397
GNW	SLN	55	0.2201	0.0376
GNW	SLZ	55	0.1080	0.0189
MPL	ELE	57	0.0552	0.0192
MPL	ELN	57	0.0666	0.0175
MPL	ELZ	57	0.1963	0.0296
HOLY	ELE	58	0.0875	0.0269
HOLY	ELN	58	0.0717	0.0271
HOLY	ELZ	58	0.0441	0.0154
TKCO	ELE	58	0.0693	0.0414
TKCO	ELN	58	0.0551	0.0234
TKCO	ELZ	58	0.1304	0.0244
KIMB	ELE	62	0.0606	0.0215
KIMB	ELN	62	0.0403	0.0194
KIMB	ELZ	62	0.0385	0.0094
RHAZ	ELE	63	0.0339	0.0609
RHAZ	ELN	63	0.0386	0.0227
RHAZ	ELZ	63	0.0460	0.0275
RAW	ELE	64	0.1704	0.0541
RAW	ELN	64	0.1286	0.0325
RAW	ELZ	64	0.1099	0.0263
KITP	ELE	66	0.0606	0.0258
KITP	ELN	66	0.0551	0.0255
KITP	ELZ	66	0.0744	0.0174
QAW	ELE	66	0.1001	0.0490
QAW	ELN	66	0.1077	0.0356
QAW	ELZ	66	0.1319	0.0264
RWW	BHE	67	0.1180	0.0423
RWW	BHN	67	0.0972	0.0300
RWW	BHZ	67	0.0000	0.0000
RWW	SLE	67	0.1131	0.0417
RWW	SLN	67	0.0902	0.0279
RWW	SLZ	67	0.0836	0.0234
LAWT	ELE	68	0.0661	0.0422
LAWT	ELN	68	0.0518	0.0235
LAWT	ELZ	68	0.0413	0.0127
SEA	ELE	70	0.0719	0.0414
SEA	ELN	70	0.0519	0.0299
SEA	ELZ	70	0.0670	0.0169
WISC	ELE	70	0.1284	0.0462
WISC	ELN	70	0.0639	0.0236
WISC	ELZ	70	0.0316	0.0172
PNLK	ELE	74	0.0415	0.0141
PNLK	ELN	74	0.0512	0.0207
PNLK	ELZ	74	0.0452	0.0116
KINR	ELE	75	0.0466	0.0163
KINR	ELN	75	0.0404	0.0163
KINR	ELZ	75	0.0365	0.0116
NOWS	ELE	75	0.0898	0.0745
NOWS	ELN	75	0.0563	0.0450
NOWS	ELZ	75	0.0378	0.0211
LON	BHE	76	0.1492	0.0233
LON	BHN	76	0.0845	0.0160
LON	BHZ	76	0.0387	0.0084
LON	SLE	76	0.1450	0.0228
LON	SLN	76	0.0882	0.0155
LON	SLZ	76	0.0559	0.0098
ELW	ELE	77	0.0894	0.0156
ELW	ELN	77	0.1611	0.0234
ELW	ELZ	77	0.0611	0.0122
ELW	HHE	77	0.0859	0.0151
ELW	HHN	77	0.1590	0.0224
ELW	HHZ	77	0.0661	0.0124
FINN	ELE	79	0.0534	0.0285
FINN	ELN	79	0.0371	0.0226
FINN	ELZ	79	0.0249	0.0105
ALCT	ELE	80	0.0518	0.0135
ALCT	ELN	80	0.0518	0.0153
ALCT	ELZ	80	0.0460	0.0103
BRKS	ELE	81	0.1407	0.0854
BRKS	ELN	81	0.1136	0.0494
BRKS	ELZ	81	0.0589	0.0226
LEOT	ELE	87	0.1008	0.0488
LEOT	ELN	87	0.0765	0.0207
LEOT	ELZ	87	0.1173	0.0243
EARN	ELE	88	0.0575	0.0283
EARN	ELN	88	0.1481	0.0496
EARN	ELZ	88	0.0497	0.0174
BEVT	ELE	98	0.0310	0.0106
BEVT	ELN	98	0.0384	0.0112
BEVT	ELZ	98	0.0228	0.0081
TTW	BHE	101	0.1202	0.0405
TTW	BHN	101	0.1096	0.0260
TTW	BHZ	101	0.0841	0.0253
TTW	SLE	101	0.1227	0.0401
TTW	SLN	101	0.1101	0.0334
TTW	SLZ	101	0.0993	0.0246
MBPA	ELE	109	0.3326	0.0949
MBPA	ELN	109	0.2079	0.0495
MBPA	ELZ	109	0.1127	0.0276
ALST	ELE	112	0.0480	0.0215
ALST	ELN	112	0.0524	0.0331
ALST	ELZ	112	0.0360	0.0130
OCWA	BHE	135	0.0168	0.0041
OCWA	BHN	135	0.0158	0.0052
OCWA	BHZ	135	0.0244	0.0032
ERW	ELE	153	0.0081	0.0041
ERW	ELN	153	0.0078	0.0033
ERW	ELZ	153	0.0062	0.0028
ERW	HHE	153	0.0082	0.0021
ERW	HHN	153	0.0075	0.0017
ERW	HHZ	153	0.0063	0.0019
KEEL	ELE	171	0.0224	0.0172
KEEL	ELN	171	0.0278	0.0168
KEEL	ELZ	171	0.0156	0.0194
SBES	ELE	189	0.0060	0.0048
SBES	ELN	189	0.0055	0.0056
SBES	ELZ	189	0.0045	0.0048
HAWA	BHE	253	0.0000	0.0000
HAWA	BHN	253	0.0011	0.0004
HAWA	BHZ	253	0.0013	0.0005
COR	BHE	282	0.0009	0.0005
COR	BHN	282	0.0010	0.0005
COR	BHZ	282	0.0000	0.0000
PIN	BHE	390	0.0007	0.0004
PIN	BHN	390	0.0005	0.0003
PIN	BHZ	390	0.0003	0.0002
NEW	BHE	438	0.0005	0.0002
NEW	BHN	438	0.0006	0.0002
NEW	BHZ	438	0.0003	0.0002
DBO	BHE	443	0.0001	0.0002
DBO	BHN	443	0.0001	0.0001
DBO	BHZ	443	0.0002	0.0001

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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