Science Center Objects

GeoPulse boomer plates are used with a high-resolution seismic system

Photo of a frame with two long, tubular floats attached to trays in between them, supporting instruments with cables.

Boomer plates (center) mounted to floats (white)

Description

The boomer plate produces a repeatable pulse in the 1-6kHz frequency range using an electrodynamic transducer that can be powered by a capacitor discharge system. It has a penetration on the order of 150 m (depending on sediment type) and provides a balance between resolution and penetration. It can be used in freshwater lakes where a sparker would not be suitable.

Specifications

  • Manufacturer: F.O.R.E.
  • Model: 5813A GeoPulse Acoustic Source
  • Weight:
  • Dimensions:
  • Power Requirements: CSP or CSP-D power supply, Max Power Input 360 Joules @ 2 pps (720 W)

Operational Characteristics

  • Minimum Operational Depth: 1m
  • Maximum Operational Depth:  500 m
  • Sediment Type: Any
  • Limitations:
  • Power Outputs / Freq. Ranges: 1- 6 kHz, peak source levels more than 210 dB re 1 micro Pascal at 1 m
  • Ship’s Requirements
    • A-frame, davit, j-frame etc. or hand-deployed
    • Deck space to accommodate the single/double frame footprint (~3' x ~6')

Additional Equipment required

  • The boomer plates can be deployed in a single or double configuration, and must be mounted to the appropriate floats. 
  • Each boomer plate has a two-wire high-voltage cable that needs to be connected in the junction box of the power supply.

Complementary Systems

Seismic sound sources need to be used with some form of “listening”/recording device.  Examples include a Geometrics GeoEel multi-channel hydrophone streamer, or an Applied Acoustics hydrophone streamer.