Surveys and data Instruments
Support to other department sections Support Dr. Scient. thesis Contribution to "Scientific infrastructure"
Obsolete, kept for reference
Last update: April 30, 2025, at 08:49 AM |
Credits W. Wheeler for list of land-seismic cables and geophones. LAND SEISMIC CABLESAll takeouts are for alligator clips 10 mm wide (red) and 5 mm wide (black). All the geophones have alligator clips.
CABLES in Warehouse, Laksevåg:
1 steel cage and 1 plywood ABEM box with lots of
Red 12-chan cables with "Gisewsky" 28-pin connectors, Estimate 40 cables. Some with 50-meter tko spacing
Both spread and extension seen. Some 6-ch 600m, some 6-ch 300m, etc.
Several Gisewskey gender-changers and adapters.
MUST BE VERIFIED!
ADAPTERSGEOPHONESNOTE: This information from W.W. notes, last revision October 2009 - should be updated! Strings90 to ? 96 strings, of 6 x 14 Hz vertical geophones, I/O systems, spoon clips Identified about 81 strings. 5 alu boxes and 1 wood box. Where are the rest? 6 phones per group/string, can be joined (PE7) case: yellow. PE-3. spike. "4UB-14-375- " phone: Sensor SM-4, UB, 14Hz, 375 ohm coil, (Spur Freq. 190 Hz. ) wiring: Series, with 8100 ohm shunt across each phone. 17 strings, of 6 x 4.5 Hz vertical geophones, I/O systems, spoon clips NB: there were 20 strings, but 3 have been converted to single phones 6 phones per group/string, can be joined case: yellow. bigger than PE-3. spike. case: "6UB-4.5-375-280" wiring: 6 in series, in red line, shunt 8200 Ohm across each phone. "OK 12/2-91" Single19 3-Component, 10 Hz geophones, I/O systems, alligator clips. (changed to 14 Hz?) 1 phone per group/string, can be joined phones: Sensor SM 4, 10 Hz, 375 ohm coils, 1 vert (UB), 2 horiz (HB) case: yellow. Stamped "4B10-375" and below it "90GR-187. 3-spike with bubble level. 138 vert 14 Hz geophones, IO-Sensor, alligator clips, PE-7 "Y" clip adapters 1 phone per group/string, can be joined via PE-7s. Lead-in 1 meter case: yellow. PE-3. spike. "4 UB14 375 281" (the 4 is big) phone: Sensor SM 4/7 "UB14 375 31"; 14 Hz, 375 Ohm, shunt 510 Ohm 5% 12 vert 4.5 Hz geophones, IO-Sensor "SM 1A", alligator clips 1 phone per group/string phone: Sensor SM 1A, 4.5 Hz, 280 ohm coil, (Nov 1975) Shunt resistor: 1000 ohm 5% case: yellow. Stamped "1A4.5-280-45". Spike. Lead-in cable: 9.75 m, terminating in Y and alligator clips 18 vert 4.5 Hz geophones, IO-Sensor "SM 6", alligator clips 1 phone per group/string Phone: Sensor SM6, Vertical, B coil, 375 Ohm coil Shunt resistor: no shunt. Case: yellow. PE-3. Stamped "6UB4.5-375". Long spike. Lead-in cable: 1 m, terminating in Y and alligator clips 39 vert 50 Hz geophones, IO-Sensor, alligator clips 1 phone per group/string, can be joined (PE-7) case: yellow. PE-3. spike. "7UGT50 370 380" phone: Sensor SM 4/7 "UGT50 370 30" PLUS 8 in various stages of disrepair 48 vert 60 Hz geophones, Mark Products, red, alligator clips, 1 phone per group/string, can not be joined Mark Prods 8008 L-40A1 60Hz 510-ohm coil (flat to 600 Hz) ROLL-ALONG SWITCH![]() This is model RS-120/48; we have RS-96/24. Image source.
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