Seismic resolution and field design: Success and failure at Taber, Alberta, Canada

Taylor, Gary G.

doi:10.1190/1.1442745

Cited by 4 publications

(3 citation statements)

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“…For at least thirty years we have consciously tried to improve the resolution of seismic data (Denham, 1981;Knapp and Steeples, 1986;Taylor, 1989;Knapp, 1990;Levin, 1998;Blache-Fraser and Neep, 2004) -and it appears to be worse than it was before we were born. What has gone wrong?…”

Section: Discussionmentioning

confidence: 99%

Preview Number 150

2011

Preview

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On p. 9 of this issue you will find an article about the history of Preview celebrating this 150th issue which also marks the 25th year of publication. In the course of researching that article, I stumbled across an interesting piece entitled 'Well Connected -Hooking up to the global network of electronic mail and news' by David Hayward (p. 22, Issue 42, February 1993). In an era where email and Internet access are ubiquitous (and almost mandatory) in our industry, it was fun to read an article which walked readers through the absolute basicsdefining the Internet, how email works, electronic news, the technology required to make it happen, etc.Less than 20 years ago, this technology was new and noteworthy and the article describing it took up four pages in our magazine. Now, the whole production of Preview is enabled by the Internet. Emails flow out from me sourcing material, flow back (hopefully!) with articles and contributions, then transfer to CSIRO Publishing for layout, then back to me for checking, etc. And finally, the magazine is published online for all to read well before the printed copy is distributed. At my end of the magazine's production at least, the process is almost entirely paperless.Coincidentally, I have also been reading a book called Shrinking the World by John Freeman. This book looks at 'the 4000-year story of how email came to rule our lives'. The book starts with a fascinating exploration of the history of communication through early mail services, telegram services, typewriters, newspapers, etc. This history sets the scene for a population that gradually experienced faster and faster modes of communication, right up to the modern day where we live in an era of 'instant' communication around much of the globe.

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Section: Discussionmentioning

confidence: 99%

Preview Number 150

2011

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“…For at least thirty years we have consciously tried to improve the resolution of seismic data (Denham (1981), Knapp and Steeples (1986), Taylor (1989), Knapp (1990), Levin (1998),Blache-Fraser and Neep (2004)) --and it appears to be worse than it was before we were born. What has gone wrong?…”

Section: Discussionmentioning

confidence: 99%

The History of Seismic Resolution

Denham¹,

Denham²

2010

ASEG Extended Abstracts

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Measurements of achieved resolution on data recorded in 1941 show better resolution than typical data recorded in 2007, and the data in intervening years are generally consistent with the long-term trend, though there may be a slight increase in resolution from a low point in the 1970s. Possible explanations include the use of increasing reflection angles, increased use of surface sources, and the use of multiple-fold techniques.

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“…At present, survey design [or in one case, designing irregular model parameterization grids, Vesnaver (1996)] is often guided by forward modeling experiments that calculate resolution or error propagation for some set of source-receiver array geometries and Earth structures (e.g., Macnae, 1984;Taylor, 1989;Sasaki, 1992), by maximizing the determinant ofL (the D-criterion, e.g., Rabinowitz and Steinberg, 1990;Steinberg et al, 1995) or by "rules of thumb" gained from past experience (e.g., Rosencrans, 1992). Of these, the D-criterion is most similar to our method since it could be automated using a genetic algorithm, and indeed could be used to invert for an optimally conditioned model parameterization as done in the current work, rather than for survey design.…”

Section: Discussionmentioning

confidence: 99%

Reconditioning inverse problems using the genetic algorithm and revised parameterization

Curtis

Snieder

1997

GEOPHYSICS

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The better conditioned an inverse problem is, the more independent pieces of information may be transferred from the data to the model solution, and the less independent prior information must be added to resolve trade offs. We present a practical measure of conditioning that may be calculated swiftly even for large inverse problems. By minimizing this measure, a genetic algorithm can be used to find a model parameterization that gives the best conditioned inverse problem. We illustrate the method by finding an optimal, irregular cell parameterization for a cross-borehole tomographic example with a given source-receiver geometry. Using the final parameterization, the inverse problem is almost a factor of three better conditioned than that using an average random parameterization. In addition, this method requires little additional programming when solving a linearized inverse problem. Hence, the improvement in conditioning and corresponding increase in independent information available for the model solution essentially come for free.

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Seismic resolution and field design: Success and failure at Taber, Alberta, Canada

Cited by 4 publications

References 0 publications

Preview Number 150

Preview Number 150

The History of Seismic Resolution

Reconditioning inverse problems using the genetic algorithm and revised parameterization

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