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Applied Seismology

ASC has over 20 years of experience in applying the methods and analyses of seismology to a wide range of engineering applications at all scales from regional earthquake site characterisation to microseismic and acoustic emission studies. Services are targeted at supplying an integrated work package along the full data path through sensor array design, data acquisition, processing and interpretation. These services include reviewing natural and induced seismicity, ground motion prediction and monitoring, working within regulatory systems and designing, operating and reporting on microseismic monitoring. Itasca is a world leader in geomechanics, hydrogeological, seismic and microseismics applications combining seismic excellence with state-of-the-art geomechanical simulations to offer a new standard in understanding the impact of engineering operations.

We can assist in all stages of seismic and microseismic analysis:

  • Array design: Cost/Benefit analysis of different acquisition geometry.
  • Pre-processing: Ensure data quality by performing spectral analysis and array validation.
  • Locating events: High quality picks and locations of seismic and microseismic events.
  • Post processing: Quality control and data validation.
  • Advanced Analysis: moment tensors, discrete fracture networks, clustering and custom visualisation techniques.
  • Interpretation: Adding value to the microseismic data to solve your problem including risk analysis of economic benefits and/or safety monitoring.

 

Seismic Hazard and Risk Assessment

  • Perform ground motion review including PGV, PPV, and PGA.
  • Follow the protocols developed by relevant national regulators.
  • Compare different seismic scales including intensity scales.
  • Provide mitigation advice by combining historical natural and induced seismicity catalogue, the response of local traffic light system, and engineering data.
  • Review available information on observed seismicity.
  • Integrate the seismic activity with geology, structure (including faults) and in-situ stresses in the target area to avoid potential interference with existing critically stressed faults.
  • Monitor the nature, geometry, growth pattern and extent of the mobilised or induced fracture network growth during engineering operations.
  • Implement the Traffic Light System in compliance with local regulations. Advise on operations in the case of Amber or Red seismic events between hydraulic fracturing stages in accordance with the Traffic Light System.
  • Construct predictive models of damage and fracture evolution based on local geomechanical properties and different engineering scenarios
  • Characterise the effects on a variety of civil structures from induced seismic events. This includes:
    • Physical damage or integrity degradation to rocks or reservoirs;
    • Physical damage to civil infrastructure, such as buildings, dams, slopes, underground laboratories.
    • Human activity interference

 


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