USGS Professonal Paper 1096 - IRIS

ALASKA
GENERAL INFORMATION
College, AI<
Operated by:
Address:
U.S. Geological Survey
College Observatory
Yukon Drive on West Ridge
College, AK 99701
Telephone: 907-479-6146
Address to obtain records:
SITE INFORMATION
National Geophysical and Solar-Terrestrial Data Center
NOAA/EOS, D62
Boulder, CO 80302
Code
Station name
Latitude
(deg N.)
Longitude
(deg w. )
Elev Date Date
(met.ers) opened closed
Foundation; geologic age
G9I, £o11cge SalposL 64. !HHlO
141. /933
320 1764 upen--
SChlst; Precambrian.
C"O College (Fairbanks)----- 64.8600
147.8350
180 1949 1977
Do.
INSTRUMENTATION
Code
Type
Seismometer
Component
T o(see)
Galvo
Tg(sec)
Type
recording
Magnification
.t T
0
Remarks
COL
C"O
Benioff 1051--------­
Benioff 1101_
Sprengnether--------­
Benioff MC-----------
Wilson-Lamison-------
Wenner---------------
z
NS,FW
Z,NS,EW
Z
z
NS
1.0
1 0
15.0
1.0
1.1
8.2
0.75 Photo paper
. 7§ de
100.0 --do-------
.52 --do-------
1.1 Pen and ink
11.8 --do-------
100 K WSSN.
HIe K
Bo.
15 K Do.
350 K Nonstandard instrument.
Not producing quality
records.
Timing system:
WWSSN standard.
System response curves: COL, see figure I, p. 363.
SHORT HISTORY
The earliest magnetic and seismic monitoring began in 1935 in the Eielson Memorial Ruilding on the campus of the University
of Alaska, as a cooperation between the UniverSity and the USC&GS. The College Magnetic Observatory was started in 1948 and has
been operated h~! a succession of {'onemmeat ageaeies since that time.
CMO has been located on the campus of the University of Alaska since 1949. It housed the Benioff MC, as well as the
Wilson-Lamison and Wenner; it also operated several strong-motion instruments from 1965 to 1977. The Wenner was used in the
Tsunalili Warning System until 1976. CMO records (photo paper) are on fjle in Bou'der COlO, ttuougb 1972
COL was established as a WWSSN station.
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