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Geophysical Instrumentation

Competency Statement:

Evaluate the physical mechanics of source and receivers. Describe receivers and possible receiver configurations depending on noise. Review application of field testing. Evaluate basic recording instrument types. Incorporate quality control during data collection.

Learning Objective:

  • Describe different types of seismic sources, receivers and their applications.
  • Identify the most common types of recording instruments.
  • Identify the most common types of restrictions that limit configuration of a seismic program.
  • Describe different data formats for the acquisition process.
  • Propose a work flow to monitor and maintain quality control over seismic acquisition procedures.

Assignment Instruction:

Subsurface seismic imaging involves wave generation and wave recording, usually at surface level and quite complex because targets are several kilometers deep. You need a strong and clean signal (emission and reception) to enhance your subsurface image. However, the amount of seismic information can easily exceed the terabyte size and there are many noise sources which degrade the quality of the seismic data.  The instruments you select must be adequate to topographic and environmental conditions to obtain the best possible signal/noise ratio.

In this assignment you have been requested to analyze an area for environmental, topographical, and cultural considerations affecting a seismic survey. You will propose the best source/receiver configuration for the survey.

Specifications and descriptions for available seismic equipment are located in Reference and Field Data. It is strongly suggested to read this material before attempting this exercise. You can also save the information on your hard drive to keep it easily available.