Imperial Valley Aftershock 1979-10-15 23:19:35 UTC
Region:
California
Latitude:
32.7667
Longitude:
-115.4413
Depth:
9.5 km
Mechanism:
Strike-slip
Strike:
320
Dip:
90
Rake:
180
ML:
5.0
References
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Bonds Corner, Ca (Omlim Residence)
Brawley, Ca (Brawley Airport)
Calexico, Ca (Fire Station)
Delta, Mexico
El Centro , Ca (Array Sta 8)
El Centro, Ca (Array Sta 1)
El Centro, Ca (Array Sta 10; El Centro Community Hospital)
El Centro, Ca (Array Sta 11; Mccabe School)
El Centro, Ca (Array Sta 2)
El Centro, Ca (Array Sta 3)
El Centro, Ca (Array Sta 4)
El Centro, Ca (Array Sta 5)
El Centro, Ca (Array Sta 6)
El Centro, Ca (Array Sta 7; Imperial Valley College)
El Centro, Ca (Array Sta 9; Imperial Valley Irrigation District)
El Centro, Ca (Differential Array)
Holtville, Ca (Post Office)
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Holtville, CA - Post Office
Hypocentral dist:
12.3 km
USGS station 5055
Site Geology:
Alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
315
PGA (cm/s/s):
246.06
PGV (cm/s):
16.16
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Component:
225
PGA (cm/s/s):
112.67
PGV (cm/s):
-7.08
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Component:
Up
PGA (cm/s/s):
-44.82
PGV (cm/s):
-1.03
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El Centro, CA - Array Sta 7; Imperial Valley College
Hypocentral dist:
12.9 km
USGS station 5028
Site Geology:
alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
322
PGA (cm/s/s):
-141.50
PGV (cm/s):
-7.58
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Component:
52
PGA (cm/s/s):
-205.76
PGV (cm/s):
12.38
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Component:
Up
PGA (cm/s/s):
101.45
PGV (cm/s):
1.00
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El Centro, CA - Array Sta 6 - 551 Huston Rd
Hypocentral dist:
13.2 km
USGS station 5158
Site Geology:
alluvium; more than 300m
Processing by: USGS
Structure:
Inst Shelter H
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
268.82
PGV (cm/s):
-25.17
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Component:
140
PGA (cm/s/s):
157.47
PGV (cm/s):
13.63
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Component:
Up
PGA (cm/s/s):
86.20
PGV (cm/s):
-1.50
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El Centro, CA - Differential Array
Hypocentral dist:
13.4 km
USGS station 5165
Site Geology:
alluvium
Processing by: USGS
Structure:
Inst Shelter
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
360
PGA (cm/s/s):
136.66
PGV (cm/s):
-6.47
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Component:
270
PGA (cm/s/s):
-145.20
PGV (cm/s):
11.93
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Component:
Up
PGA (cm/s/s):
-103.63
PGV (cm/s):
2.06
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El Centro , CA - Array Sta 8 - 95 E Cruickshank Rd
Hypocentral dist:
13.6 km
USGS station 5159
Site Geology:
alluvium; more than 300m
Processing by: USGS
Structure:
Inst Shelter H
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
-147.54
PGV (cm/s):
9.93
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Component:
140
PGA (cm/s/s):
-130.15
PGV (cm/s):
-5.77
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Component:
Up
PGA (cm/s/s):
-73.73
PGV (cm/s):
1.33
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El Centro, CA - Array Sta 5 - 2801 James
Hypocentral dist:
13.9 km
USGS station 0952
Site Geology:
alluvium; more than 300m
Processing by: USGS
Structure:
Inst Shelter H
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
-274.74
PGV (cm/s):
12.04
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Component:
140
PGA (cm/s/s):
-221.36
PGV (cm/s):
11.59
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Component:
Up
PGA (cm/s/s):
-134.46
PGV (cm/s):
-2.92
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El Centro, CA - Array Sta 9; Imperial Valley Irrigation District - 302 Commercial
Hypocentral dist:
14.2 km
USGS station 0117
Site Geology:
Alluvium; more than 300m
Processing by: USGS
Structure:
2-story bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
360
PGA (cm/s/s):
185.56
PGV (cm/s):
-3.21
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Component:
90
PGA (cm/s/s):
-192.02
PGV (cm/s):
-10.08
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Component:
Down
PGA (cm/s/s):
125.66
PGV (cm/s):
-2.24
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El Centro, CA - Array Sta 4 - 2905 Anderson
Hypocentral dist:
14.4 km
USGS station 0955
Site Geology:
alluvium; more than 300m
Processing by: USGS
Structure:
Inst Shelter H
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
-162.33
PGV (cm/s):
9.50
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Component:
140
PGA (cm/s/s):
-229.63
PGV (cm/s):
12.68
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Component:
Up
PGA (cm/s/s):
149.53
PGV (cm/s):
1.67
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Calexico, CA - Fire Station
Hypocentral dist:
15.2 km
USGS station 5053
Site Geology:
Alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
315
PGA (cm/s/s):
-64.45
PGV (cm/s):
-5.32
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Component:
225
PGA (cm/s/s):
-98.17
PGV (cm/s):
7.82
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Component:
Up
PGA (cm/s/s):
33.09
PGV (cm/s):
1.49
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El Centro, CA - Array Sta 10; El Centro Community Hospital - Imperial & Ross
Hypocentral dist:
15.2 km
USGS station 0412
Site Geology:
alluvium; more than 300M
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
320
PGA (cm/s/s):
-50.26
PGV (cm/s):
3.12
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Component:
50
PGA (cm/s/s):
-60.00
PGV (cm/s):
-3.81
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Component:
Up
PGA (cm/s/s):
-25.41
PGV (cm/s):
0.41
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Bonds Corner, CA - Omlim residence - Hwys 115 & 98
Hypocentral dist:
15.9 km
USGS station 5054
Site Geology:
Alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
125.90
PGV (cm/s):
7.73
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Component:
140
PGA (cm/s/s):
-67.67
PGV (cm/s):
3.94
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Component:
Up
PGA (cm/s/s):
49.67
PGV (cm/s):
0.93
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El Centro, CA - Array Sta 11; McCabe School
Hypocentral dist:
17.3 km
USGS station 5058
Site Geology:
alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
188.45
PGV (cm/s):
12.49
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Component:
140
PGA (cm/s/s):
95.07
PGV (cm/s):
-7.43
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Component:
Up
PGA (cm/s/s):
-58.63
PGV (cm/s):
2.00
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El Centro, CA - Array Sta 3 - Pine Union School
Hypocentral dist:
17.9 km
USGS station 5057
Site Geology:
alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
-97.20
PGV (cm/s):
5.55
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Component:
140
PGA (cm/s/s):
-136.41
PGV (cm/s):
12.25
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Component:
Up
PGA (cm/s/s):
38.07
PGV (cm/s):
-1.07
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El Centro, CA - Array Sta 2 - Keystone Rd
Hypocentral dist:
20.4 km
USGS station 5115
Site Geology:
Alluvium
Processing by: USGS
Structure:
Inst Shelter H
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
81.28
PGV (cm/s):
-3.24
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Component:
140
PGA (cm/s/s):
-151.14
PGV (cm/s):
-10.44
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Component:
Up
PGA (cm/s/s):
47.02
PGV (cm/s):
1.16
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El Centro, CA - Array Sta 1 - Borchard Ranches
Hypocentral dist:
26.1 km
USGS station 5056
Site Geology:
alluvium
Processing by: USGS
Structure:
1-Story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
230
PGA (cm/s/s):
29.84
PGV (cm/s):
0.87
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Component:
140
PGA (cm/s/s):
-60.86
PGV (cm/s):
5.01
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Component:
Up
PGA (cm/s/s):
-37.93
PGV (cm/s):
0.36
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Brawley, CA - Brawley Airport - Airport Hangar
Hypocentral dist:
28.1 km
USGS station 5060
Site Geology:
Alluvium
Processing by: USGS
Structure:
1-story bldg Metal Hangar
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
315
PGA (cm/s/s):
-59.08
PGV (cm/s):
3.05
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Component:
225
PGA (cm/s/s):
-35.21
PGV (cm/s):
2.19
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Component:
Up
PGA (cm/s/s):
55.02
PGV (cm/s):
-0.74
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Delta, Mexico
Hypocentral dist:
33.6 km
IdeI station 6605
Site Geology:
Deep Alluvium
Structure:
Inst Shelter D
Data Available: uncorrected acceleration only
Summary Page for this Station
Plot Acceleration
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Component:
352
PGA (cm/s/s):
108.20
PGV (cm/s):
-
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Component:
262
PGA (cm/s/s):
58.40
PGV (cm/s):
-
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Component:
Down
PGA (cm/s/s):
23.80
PGV (cm/s):
-
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