Fourie, CJSvan Dam, CL2009-01-282009-01-282008-11Fourie, CJS and van Dam, CL. 2008. Planning for shallow high resolution seismic surveys, Position IT Journal, Vol. Nov/Dec 2008, pp 23-251818-2097http://www.eepublishers.co.za/images/upload/ST%20seismic%20survey.pdfhttp://hdl.handle.net/10204/2912Copyright: 2008 EE Publisherselectromagnetic geophysical methods, but the frequency domain methods in particular, depend on the skindepth as a guide to the depth of investigation or penetration from the surface. By definition the skindepth is the distance where the initial amplitude of the electromagnetic wave attenuated by 1/e or 67%. This measure is influenced by the physical properties of the subsurface and uses the resistivity, the angular frequency (w) of the electromagnetic field and the magnetic permeability (m). By using more than one frequency, different depths of penetration are achieved, which allows one to obtain information from the consecutive different layers of geology. The same is true of seismic waves which also attenuate with distance and time. The attenuation also depends on the properties of the subsurface, of which the frequency (f), velocity (v) and the Q-factor are the most important. Similar to the electromagnetic method, depth of penetration can be manipulated in a way by controlling the frequency of the input wave. This information can be used in conjunction with this spreadsheet to aid the geophysicist in designing shallow high resolution seismic surveys to achieve maximum resolution and penetration. This Excel spreadsheet is available free from the authorsenHigh resolution seismic surveySeismic skindepthArticleFourie, C., & van Dam, C. (2008). Planning for shallow high resolution seismic surveys. http://hdl.handle.net/10204/2912Fourie, CJS, and CL van Dam "Planning for shallow high resolution seismic surveys." (2008) http://hdl.handle.net/10204/2912Fourie C, van Dam C. Planning for shallow high resolution seismic surveys. 2008; http://hdl.handle.net/10204/2912.TY - Article AU - Fourie, CJS AU - van Dam, CL AB - electromagnetic geophysical methods, but the frequency domain methods in particular, depend on the skindepth as a guide to the depth of investigation or penetration from the surface. By definition the skindepth is the distance where the initial amplitude of the electromagnetic wave attenuated by 1/e or 67%. This measure is influenced by the physical properties of the subsurface and uses the resistivity, the angular frequency (w) of the electromagnetic field and the magnetic permeability (m). By using more than one frequency, different depths of penetration are achieved, which allows one to obtain information from the consecutive different layers of geology. The same is true of seismic waves which also attenuate with distance and time. The attenuation also depends on the properties of the subsurface, of which the frequency (f), velocity (v) and the Q-factor are the most important. Similar to the electromagnetic method, depth of penetration can be manipulated in a way by controlling the frequency of the input wave. This information can be used in conjunction with this spreadsheet to aid the geophysicist in designing shallow high resolution seismic surveys to achieve maximum resolution and penetration. This Excel spreadsheet is available free from the authors DA - 2008-11 DB - ResearchSpace DP - CSIR KW - High resolution seismic survey KW - Seismic skindepth LK - https://researchspace.csir.co.za PY - 2008 SM - 1818-2097 T1 - Planning for shallow high resolution seismic surveys TI - Planning for shallow high resolution seismic surveys UR - http://hdl.handle.net/10204/2912 ER -