Seismic Refraction Study Investigating The Subsurface Geology At Houghall Grange, Durham, Northern England

Transcript

Interpretation of seismic data surveyed at Houghell Grange was carried out using the plus minus method to calculate the depth to the refracted layers. The results show large discontinuities with geological data. The calculated depth to the basement feature is much larger than depths suggested by borehole data. Additional analysis of the data reveals that the data is attributed with large uncertainties and consequently the accuracy and reliability of the results are diminished. It is suggested that the “hidden layer” or continuous velocity problems may have caused errors in the data. In reality, the inaccuracy of the results could have been caused by a variety of possibilities including poor data analysis and computation. This highlights the need for further and more detailed study and more rigorous data analysis.