Integrated test plan for a shallow high resolution compressional seismic reflection demonstration
This integrated test plan describes the demonstration of a surface high resolution seismic reflection acquisition system using swept source technology. Compressional wave data will be collected along a previously occupied seismic line associated with a recent seismic survey north of the 300 Area. The swept source system will be employed testing two very different high resolution vibrator sources, one with a frequency range from 10 to 500 Hz and a smaller unit with a range from 20 to 1,500 Hz. This will enable a precursory comparison of two vibrator data sets with standard impulse data. The data will be evaluated for the presence of reflected energy, signal strength, frequency content and signal-to-noise ratio. If the water table can be distinguished from the Hanford/Ringold formation contact, then the high permeability Hanford-filled channels can be mapped. Next, if details on the configuration of the Ringold middle mud can be discerned, this will allow detecting fluid pathway through the mud and confirm the depositional nature of this unit. Finally, by mapping the extent of the lower confining mud unit, areas where the polluted unconfined and lower confined aquifers communicate might be located. Another source and acquisition method will also be tested by gathering data along the same seismic line. This system uses a lightweight source that produces a high-velocity shock wave that strikes the earth`s surface causing an acoustic wave to propagate downward. The acquisition method is nonconventional and is reported to eliminate obstructing noise such as groundroll and air blast. It is unexpected that this system will have the imaging ability of the vibratory systems. However it could prove to be economical for shallow applications when only compressional energy is needed.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 10183020
- Report Number(s):
- WHC-SD-EN-TP--048; ON: DE94019040; BR: 35AF11201/35AF11202
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
540250
AQUIFERS
DATA ACQUISITION
DATA ANALYSIS
EXPERIMENT PLANNING
GEOLOGIC STRUCTURES
HANFORD RESERVATION
HEALTH AND SAFETY
MAPPING
PERFORMANCE TESTING
REMEDIAL ACTION
SEISMIC DETECTORS
SEISMIC P WAVES
SEISMIC SOURCES
SEISMIC SURVEYS
SITE CHARACTERIZATION
SITE RESOURCE AND USE STUDIES