USGS Professonal Paper 1096 - IRIS

OKLAHOMA--Continued
Norman, OK
INSTRUMENTATION--Continued
Seismometer Galvo Typ' Magnification
Code TYRe Com:[lonent T (sec) T (sec) recording
" T
0 g ,
TUL Benioff-------------- Z,NS,EW 1 .0 0.75 Photo paper 100 K ---
Remarks
--do----------------- Z 1.0 High-pass Visible, 35.6 K, Three instruments.
16-mm film 100 K, 10 K
--do----------------- Z 1.0 I-Hz Helicorder, 200 K
bandpass. 16-nun film.
--do----------------- Z 1.0 16-Hz Helicorder 2000 K Magnification
bandpass.
16 Hz. "
Press-Ewing---------- Z,NS,EW 20.0 100.0 Photo paper 5 K
--do----------------- Z,NS,EW 20.0 --- 16-mm film 200, 20, 2 T,n instruments.
--do----------------- Z 20.0 Low-pass Helicorder, 34 K, 53. 6 K, High-gain.
16-mm film. 5 .36 K, 536
010 Geotech 8-13--------- Z 1.3 --- Pen ond ink 16 K Magnification
" 1 sec.
High-pass. Magni fication
140 K 10 Hz.
"
Timing system;
the beginning of each record.
tIost stations u" , Sprengnether l1EQ-800B crystal clock with WIN recorded
NMO used the 60-Hz pO"'erline corrected by WWV (not to
"
w~thln 1 sec) . rut has , d~g~tal system using ,
quartz crystal contained in , proportional oven.
System response curves;
Available [rom station.
SHORT HISTORY
TUL ,
'" established in 1961 by Jersey Production Research Company as broadly based geophysical observatory. In April
1965, th' complete facility ,nd its record archives were wo, given tn th' University nf Oklahoma by Humble Oil Company. Since
December 1961, three short-period ond three long-period photo-paper seismograms have been recorded. From 1970 to th' present, th,
seismometers have been modified ,nd 17 other seismic recording systems have been added.
NMO located nn th' campus in Norman.
'" Th, timing system w", imprecise ond th' records or, currently misplaced.
A new array of 11 short-period vertical seismographs is being installed throughout the State. RLO ,nd two "w stations will
b, teIemetered tn 1UL. H2O, OLO, wLO, CRO, and four new statlOn!! w~1 I b, operated by volunteers who will mail all tecoids to
TUL.
Th, new array. nf which ,11 th' stations listed above except TUL or, , part, will eventually contain 11 short-period
vertical instruments.
253