USGS Professonal Paper 1096 - IRIS

NORTH DAKOTA
Garl and
IX
GENERAL INFORMATION
Operated by:
Address:
Teledyne Geotech
Teledyne Geotech
3401 Shiloh Road
Garl and TX 75041
Telephone: 214-271-2561
Telex: 73-2394
Address to obtain records:
SITE INFORMATI ON
Teledyne Geotech
Seismic Data Analysis Center
314 Montgomery Street
Alexandria, VA 22314
Code
Station
name
--
Lati tude Longitude Elev Date Date
Foundation; geologic
(deg N.) (deg W _) (meters) opened closed 'g'
CHH-ND) Hannah------------------ 48.9481 98.6925 488 7/22/63 P./05/64 Shale.
CHH2ND) --do-------------------- 48.9442 98.6822 488 5/23/66 6/03/66 ---
CRY-ND) Ryder------------------- 48.0972 101. 4944 640 7/22/63 3/22/65 Glacial drift.
5/23/66 6/03/66
crS-ND) Trotters---------------- 47.1069 103.6731 816 10/02/64 5/14/65 ---
INSTRUMENTATION
Sei smometer Galva Typ' Magnification
Code Type Component To (sec) Tg(sec) recording ,t T
0
Remarks
(IUI-ND) , (RY-ND) : Benioff--------- Z,NS,EW 1 0 --- Magnetic tape, (HH-ND) : 60 K ---
35-mm film.
(RY-NO) : 60 K
Sprengnether---- z NS , ELI 2D 0 --- --d o ---------- --- ---
(HH2ND) , (RY-ND)
(2d oper.): Gcotcch 8-13---- Z,NS,EW LO --- Magnetic tape --- Portable system.
Geotech--------- Z,NS,EW 20.0 --- --do--------- --- Do_
(TS-ND) : Bellioif--------- Z,NS,EW 1.0 --- Magllf"ti c tape, --- ---
35-mm film.
Timing system: Geotech crystal clock checked with WWV (50-msec tolerance) .
S~lstem response curlles' See fi gllre J p 36< .
SHORT HISTORY
Th, LRSM program began in 1960 part of the VELA-Uniform project.
" It continued until 1971, when it replaced by th'
Sped e l Oat a Collection System program "l:dcll rema i ps active j.lork "pder these progpms has heen di reefed to~'ards '" advanCing the
seismic-detection, identification, ,nd location techniques necessary to detect ,nd identify underground nuclear explosions.
All work i, accomplished under th' technical direction of AFTAC, Vela Seismic Cent.er, in A.l exandri a , V,-
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