USGS: Helena, MT
Carroll College
Agency Number:
2202
Structure:
5-story bldg
Site Geology:
rock
Owner:
United States Geological Survey
(external link)
References
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Dillon, Montana 2005-07-26 04:08:35 UTC
Hypocentral dist:
139.4 km
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Component:
Up
PGA (cm/s/s):
-5.90
PGV (cm/s):
0.45
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Component:
90
PGA (cm/s/s):
7.90
PGV (cm/s):
0.42
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Component:
360
PGA (cm/s/s):
-7.90
PGV (cm/s):
-0.32
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Helena, Montana 1935-10-31 18:37:49 UTC
Epicentral dist:
3.2 km
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Component:
Down
PGA (cm/s/s):
87.49
PGV (cm/s):
-9.70
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Component:
180
PGA (cm/s/s):
143.47
PGV (cm/s):
7.34
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Component:
270
PGA (cm/s/s):
142.50
PGV (cm/s):
-13.33
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