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Falmouth Scientific, Inc. HMS-620 Bubble Gun Seismic Systems

Portable, Low Frequency, Acoustic Sub - Bottom Seismic Systems

The HMS-620 Bubble GunTM systems use low-frequency acoustic signals to provide superior signal penetration vertically through coarse sand, gravel tills, and other difficult-to-penetrate sediments.

HMS-620 Single Source
 Ideal for Small Boat or Inland Surveys
HMS-620D Dual Source
 Higher Source Level, Greater Penetration
HMS-620LF Low Frequency Source
 Wide 20 – 1700 Hz Energy Spectrum
 Ideal for Multi-Channel Reflection Surveys

  • Falmouth Scientific, Inc. HMS-620 Bubble Gun Seismic Systems
Falmouth Scientific, Inc.
33 Jonathan Bourne Dr / PO Box 326
02559 Pocasset
United States
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Description

APPLICATIONS
 Offshore Wind Turbine and Dam Site Surveys
 Cross River Surveys for Bridge Construction
 Bedrock Investigation
 Pipeline Construction Surveys
 Geotechnical Site Investigation
 Coastal Engineering
 Shallow Gas Hazard Surveys

FEATURES/BENEFITS
Falmouth Scientific, Inc.
www.falmouth.com
HMS-620LF Low Frequency Bubble GunTM Source Vehicle
 Single and Dual Source Systems do not need heavy handling or deployment equipment
 Wide-band 70 - 1700Hz pulse provides bottom penetration through many sediment types
 LF System Source Bandwidth 20Hz – 1700Hz
 Very stable and repeatable source pulse without the need for external timing controllers
 Rugged, lightweight transducer platform provides stable operation in adverse sea-state conditions
o Electromagnetic acoustic source; Contained Air Volume (no air compressor needed)
 Minimal Electric Power Requirements
o Selectable 110 or 220 VAC source of less than 1 KWatt for Single Source, or 2 KWatt for Dual or LF Source
 Flexible portable transceiver unit optimizes system for a wide range of sediments
o Low-noise pre-amp with high/low pass filters and gain control
o User-selectable trigger or external trigger
o Multiple Sources can be synchronized to a common trigger without need for external timing control
o Repeatable Shot-to-Shot Phase and Amplitude Wavelet Correlation > 0.96
 Oil-filled single channel hydrophone streamer cable incorporates a 7-meter multi-element active section
o 35-meter deactivation switches on each hydrophone element enable exportation outside of USA
 Compatible with industry-standard data acquisition software & multi-channel streamers

HMS-620 Bubble Gun Family

HMS-620LF Low Frequency Bubble Gun

Specifications

  • Product type
    Seimic Source, Sub-Bottom Profiler, Bubble Gun, Acoustic Source
  • Components to be used in combination with product
    HMS-620, HMS-622
  • Year of initial development
    2013
  • Application
    High Resolution
  • Max power consumption [W]
    2000
  • Power type
    AC
  • Transducer weight [kg]
    30
  • Transducer length [m]
    0.5
  • Transducer width [m]
    0.5
  • Transducer height [m]
    0.09
  • Weight of logging unit [kg]
    30
  • Portability of logger
    Portable
  • Power requirements
    2000W
  • Operating temperature: max. [°C]
    65
  • Operating temperature: min. [°C]
    -20
  • Platform type
  • Signal composition
  • Frequency
  • Min. depth of operation [m]
    1
  • Max. depth of operation [m]
    1500
  • Min. frequency [Hz]
    20
  • Max. frequency [Hz]
    2000
  • Power output [W]
    214dB
  • Max. resolution [m]
    .25
  • Max. penetration [m]
    700
  • Max. pulse rate [Hz]
    4
  • Max. pulse length [s]
    0.004
  • Connections
  • Internal logging

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