Helena Aftershock 1935-11-28 14:41:48 UTC
Region:
Montana
Latitude:
46.6000
Longitude:
-112.0000
Depth:
5.0 km
Mechanism:
Unknown
ML:
5.0
References
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Helena, Mt (Federal Bldg)
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Helena, MT - Federal Bldg - Park & Clark
Epicentral dist:
6.3 km
USGS station HFB
Site Geology:
rock
Processing by: USGS
Structure:
4-story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this Station
Plot Acceleration
Spectra:
Log
Lin
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Component:
90
PGA (cm/s/s):
-83.06
PGV (cm/s):
-3.88
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Component:
0
PGA (cm/s/s):
-74.85
PGV (cm/s):
-3.22
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Component:
Up
PGA (cm/s/s):
-31.74
PGV (cm/s):
-1.42
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