USGS Professonal Paper 1096 - IRIS

INDIANA
Terre Haute. IN
GENERAL INFORMATION
Operated by!
Address:
Telepbone:
Gerald J. Sbea
1105 Springhill Road
Terre Haute, IN 47802
812-232-6311 ext. 2435
'Address to obtain records:
1950-1967 :
National Geophysical and Solar-Terrestrial Data ~enter
NOAA/EOS, D62
Boulder, CO 60302
1968-present:
Records available only on a limited basis, and
records are not retained on a routine basis.
As above.
SITE INFORMATION
Code
Station
name
Latitude I,ongitude Elev
(deg N.) (deg W.) (meters)
Date
opened
Date
closed
Foundation; geologic
'ge
(THI) Terre Haute------------- 39.3556 87.3667 160
THI --do-------------------- 39.4069 87.3600 150
1/01/49 9/21/62 Sedimentary fill; Holocene.
9/21/62 Open-- Do.
INSTRUMENTATION
Seismometer
Galva Type Magnification
Remarks
Code Type Component To (sec) T (sec) recording .t T
g
0
THI Electronic Research-- NS 7.0 12.0 Pen .nd ink- 1000
Custom--------------- EW 10.0 10.0 ---do------- 1000
Experimental--------- Z 3.0 5.0 Smoked paper 1000
Timing system:
Electronic home-crafted crystal clock, manually timed with WWV.
System response curve:
Not available.
SHORT HTSTORY
(THI) was started in 1949 to participate in the IGY. The station, moved to THI in 1962, was funded through the USC&GS until
1967. During that period. the instruments used were a Hilne-Shaw modified. t =12 sec, and a Bosch-Omori, t =14 sec. Since 1955
the station has also maintained two strong-motion instruments, t -1 sec. Expgrimental research-type instru~ents have been in use
since 1967.
a
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