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USGS Professonal Paper 1096 - IRIS

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ILLINOIS<br />

Ch1cago, IL<br />

GENERAL INFORMATION<br />

Operated by:<br />

Address:<br />

Loyola University<br />

Loyola University<br />

6525 Sheridan Road<br />

Cn1cago, 11 60626<br />

Telephone: 312-274-3000 ext. 255<br />

" 389<br />

Address to ohta i n reco rds:<br />

A, above.<br />

SITE flff6R1tA'1'IElN<br />

Code<br />

Station name<br />

Latitude Longitude Elev Date Date<br />

(deg N.) (deg W. ) (meters) oQened closed<br />

Foundation; geologic<br />

.ge<br />

CHI Chicago-Loyola---------- 41.9000 87. 6333 183 9/1912 Open-- Hard packed sand.<br />

INSTRUMENTATION<br />

Seismometer Galvo Type Magnification<br />

Code TYEe ComQonent T (sec) Tg(sec) recording .t T<br />

0<br />

,<br />

CHI Sprengnether DH------ Z 1 .0 1 .0 Photo paper Uncalibrated ---<br />

Sprengnether H------- NS,EW 7 .0 7 .0 ---do------ ---do------- ---<br />

Sprengnether VR-40-0- NS 7 .0 7 .0 Visible---- ---do------- ---<br />

-<br />

Remarks<br />

Il.Dl1ng system:<br />

sprengnether Is-tuu crystal c lock.<br />

System response curve:<br />

Not available.<br />

SHORT HISTORY<br />

An SO-kg Wiechert horizontal seismometer ." ,et up in September 1912. The first quake ." recorded on September 29, 1912,<br />

.nd reported on the first page of the Chicago Tribune.<br />

144

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