Magnitude 3.6 NEAR THE COAST OF MASSACHUSETTS
2003 July 22 11:41:15 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
Explanation of Parameters
22 JUL 2003 (203)
ot = 11:41:15.66 +/- 0.00 NEAR THE COAST OF MASSACHUSETTS
lat = 42.772 +/- 0.0
lon = -70.023 +/- 0.0 MAGNITUDE 3.6 (WES)
dep = 11.0 +/- 0.0
55 km (35 miles) ENE of Gloucester, Massachusetts (pop 30,000)
70 km (45 miles) ESE of Portsmouth, New Hampshire (pop 20,000)
85 km (50 miles) ENE of Lynn, Massachusetts (pop 89,000)
95 km (60 miles) ENE of BOSTON, Massachusetts (pop 589,000)
Felt on Cape Ann.
nph = 9 of 10 se = 0.00 FE=476 held
error ellipse = (155.8, 65.8, 0.0; 0.0, 0.0, 0.0; 24.0, 9.8, 0.0)
mb = 0.0 ( 0) ML = 0.0 ( 0) mblg = 3.8 ( 6) md = 3.3 ( 1) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
HRV eP 11:41:36.35 -0.9 1.2 257 d:1.8+2 3.3 g:6.8-1 .65 3.8 HRV
eS 11:41:51.15 S res = -1.9X
MIV eP 11:42:00.05 -2.1 2.9 298 d:3.5+2 3.9X MIV
NCB eP 11:42:05.71 -2.4 3.3 293 d:3.5+2 3.9X g:2.9-1 .75 3.8 NCB
PAL eP 11:42:05.89 -3.7 3.4 240 d:5.3+1 2.1X g:2.0-1 .63 3.7 PAL
BRNJ eP 11:42:17.50 -0.5 4.0 240 d:5.4+1 2.1X BRNJ
BINY eP 11:42:22.31 -2.2 4.4 265 d:2.1+2 3.4X g:2.0-1 .63 3.9 BINY
SSPA eP 11:42:45.28 -4.9 6.3 253 d:1.6+1 1.0X g:1.7-2 .90 2.9 SSPA
CBN eLg 11:44:31.50 87.8 7.2 233 d:2.5+1 1.4X g:1.1-1 .63 4.0 CBN
ALLY eLg 11:45:06.25 117. 7.6 265 d:3.6+1 1.7X ALLY
Generated 2003 JUL 23 at 17:57 UTC
