RV "KRONPRINS HAAKON": SPARKER SYSTEM <back to main page>

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SPARKER ENERGY SOURCE - ALTERNATIVES

Geo Marine: Several models: 1,2, 6-16 kJ and beyond ....



Geo Marine Sparker energy sources. Image source: Geo Marine.

Model Geo-Spark 1000.

Models

Model	Description
GEO-SPARK Pulsed Power Supplies - overview.
Geo-Spark 1000	Energy: 100-1000 Joule Dimensions: xx Power supply requirements: 220-30 V / 50-60 Hz. "Over-voltage will damage the PS." Quoting from product data sheet: The Geo-Spark 1000 PPS can be operated from a small 230 V /5 kVA generator or from ordinary 230 V /16 A mains socket. The system is designed not to draw excessive peak currents.
Geo-Spark 2000	Energy: 2 kJ / can be expanded to 7 kJ Dimensions: H x W x D = 109 x 55 x 71cm Weight: 95 kg for PS, 95 kg for Capacitor Bank Power supply requirements: Single phase, 220-240 V AC, 50-60 Hz, 16 A Get confirmation that 2 kJ power supply can be used in stand-alone mode.
Geo-Spark 6 kJ & 16 kJ (included for reference; there is also a 20-40 kJ model)	Energy: 6 kJ & 16 kJ Dimensions: xx

CABLE REEL / WINCH W/SLIP RING FOR HIGH-VOLTAGE SPARKER CABLE

Quoting from Geo Marine data sheets:

".. is towed by a quality, Kevlar-reinforced, coaxial power/tow cable, with stainless steel Kellum towing grip."
" .. The cable is connected to the yellow decklead by two rotational HV contacts, which allow the cable reel to be operated without disconnecting anything."
" .. The coaxial structure of the HV power cable is 100 % safe and reduces all electromagnetic interference to the minimum .."

GEO MARINE: REEL / WINCH FOR HIGH-VOLTAGE SPARKER CABLE (link to photo source.)



	Quoting: "The Geo-S 800 is towed a very high quality, Kevlar-reinforced, power / tow cable, with a stainless steel Kellum towing grip. This very sturdy, special HV cable contains 4 x 10 mm2 inner leads (negative) plus a 40 mm2 outer braiding (ground). It is designed to have a very low self-inductance in order to preserve the high dI/dt pulse output of the Geo-Spark power supply. The wet side of the cable is terminated with four special HV connectors to the electrode modules and a ground connector to the frame of the sparker." "The coaxial structure of the HV power cable provides 100 % safety and reduces all electromagnetic interference to the absolute minimum."
Geo Marine sparker cable reels. Link to photo source.

Applied Acoustic: CSP-N Seismic Energy Source - 1200 or 2400 Joule

CSP = Controlled Seismic Pulse

Applied Acoustic: CSP-N Seismic Energy Source. Click to enlarge.

Energy	Two models; either 1200 or 2400 Joule
Size	50 x 58 x 74 cm (HxWxD)
Weight	Mod. CSP-N-1200 (1200 J): 60 kg Mod. CSP-N-2400 (2400 J): 63,5 kg
Supply voltage requirements:	240 Vac, 45-65Hz, 4.0kVA, single phase. 3 pin connector => 17.4 A @ 230 Vac

USE OF "REMOTE" AND "KEY" CONNECTORS

Advise from manufacturer:

The CSPN remote control includes a remote Key IN option so there is no need for the additional coaxial line unless the key signal is generated away from where you are planning to control the CSPN from in the recording laboratory.

Manufacturer's own REMOTE extension cable is 12x0.5 mm² with common shield (cut down to 10-way - the number of pins on the connector). Nominal capacitance, core to core : 130 pF/m, and core to screen : 220 pF/m.

SIG France, three models, 300, 2000 or 6000 Joule

Models	Description
SIG Pulse S1	Energy: 10-300 Joule Dimensions: 50 x 55 x 38 cm / 35 kg
SIG Pulse M2	Energy: 100-2000 Joule Dimensions: 50 x 55 x 38 cm / 49 kg
SIG Pulse L5	Energy: 100-6000 Joule Dimensions: 50 x 55 x 38 cm / 49 kg + 50 x 55 x 28 cm / 35 kg
Common supply voltage requirements:	Single phase 230 Vac, 50-60 Hz 17 A (3,7 kW), firing rate: 1500 J/s 20 A (4,7 kW), firing rate: 2000 J/s

HATCH FOR SPARKER SOURCE CABLE, COMPRESSOR ROOM BULKHEAD

Sparker power supply (inside a transit case - so not for permanent installation) can be placed on dedicated shelf inside Seismic compressor room on 4th deck. The power supply provides a high-voltage pulse to the acoustic sound generating device towed behind the vessel. A hatch is thus required in compressor room bulkhead.

Photo shows hatch on R/V "G.O. SARS", room 316 Geology lab:

Hatch on R/V "G.O. SARS", room 316 Geology lab - for streamer cable. Photo taken 4 Feb. 2003, at the yard.

SPARKER LINKS

Hydro International
Zen and the Black Art of the Boomer and Sparker System, by Mark Newman and Anthony Green, Applied Acoustic Engineering Ltd, UK