Impact of seismic image quality on fault interpretation uncertainty

Juan Alcalde, Clare E. Bond, Gareth Johnson, Jennifer F. Ellis, Robert W.H. Butler

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Uncertainty in the geological interpretation of a seismic image is affected by image quality. Using quantitative image analysis techniques, we have mapped differences in image contrast and reflection continuity for two different representations of the same grayscale seismic image, one in two-way-time (TWT) and one in depth. The contrast and reflection continuity of the depth image is lower than that of the TWT image. We compare the results of 196 interpretations of a single fault with the quality of the seismic image. Low contrast and continuity areas correspond to a greater range of interpreted fault geometries, resulting in a broader spread of fault interpretations in the depth image. Subtle differences in interpreted fault geometries introduce changes in fault characteristics (e.g., throw, heave) that are critical for understanding crustal and lithospheric processes. Seismic image quality impacts interpretation certainty, as evidenced by the increased range in fault interpretations. Quantitative assessments of image quality could inform: (1) whether model-based interpretation (e.g., fault geometry prediction at depth) is more robust than a subjective interpretation; and (2) uncertainty assessments of fault interpretations used to predict tectonic processes such as crustal extension.
LanguageEnglish
Pages4-10
Number of pages7
JournalGSA Today
Volume27
Issue number2
DOIs
Publication statusPublished - 28 Feb 2017

Fingerprint

fault geometry
heave
image analysis
tectonics
prediction

Keywords

  • seismic image
  • image quality
  • fault interpretation

Cite this

Alcalde, J., Bond, C. E., Johnson, G., Ellis, J. F., & Butler, R. W. H. (2017). Impact of seismic image quality on fault interpretation uncertainty. GSA Today, 27(2), 4-10. https://doi.org/10.1130/GSATG282A.1
Alcalde, Juan ; Bond, Clare E. ; Johnson, Gareth ; Ellis, Jennifer F. ; Butler, Robert W.H. / Impact of seismic image quality on fault interpretation uncertainty. In: GSA Today. 2017 ; Vol. 27, No. 2. pp. 4-10.
@article{e3b29f7591384033a3b61dc68aef654d,
title = "Impact of seismic image quality on fault interpretation uncertainty",
abstract = "Uncertainty in the geological interpretation of a seismic image is affected by image quality. Using quantitative image analysis techniques, we have mapped differences in image contrast and reflection continuity for two different representations of the same grayscale seismic image, one in two-way-time (TWT) and one in depth. The contrast and reflection continuity of the depth image is lower than that of the TWT image. We compare the results of 196 interpretations of a single fault with the quality of the seismic image. Low contrast and continuity areas correspond to a greater range of interpreted fault geometries, resulting in a broader spread of fault interpretations in the depth image. Subtle differences in interpreted fault geometries introduce changes in fault characteristics (e.g., throw, heave) that are critical for understanding crustal and lithospheric processes. Seismic image quality impacts interpretation certainty, as evidenced by the increased range in fault interpretations. Quantitative assessments of image quality could inform: (1) whether model-based interpretation (e.g., fault geometry prediction at depth) is more robust than a subjective interpretation; and (2) uncertainty assessments of fault interpretations used to predict tectonic processes such as crustal extension.",
keywords = "seismic image, image quality, fault interpretation",
author = "Juan Alcalde and Bond, {Clare E.} and Gareth Johnson and Ellis, {Jennifer F.} and Butler, {Robert W.H.}",
year = "2017",
month = "2",
day = "28",
doi = "10.1130/GSATG282A.1",
language = "English",
volume = "27",
pages = "4--10",
journal = "GSA Today",
issn = "1052-5173",
number = "2",

}

Alcalde, J, Bond, CE, Johnson, G, Ellis, JF & Butler, RWH 2017, 'Impact of seismic image quality on fault interpretation uncertainty' GSA Today, vol. 27, no. 2, pp. 4-10. https://doi.org/10.1130/GSATG282A.1

Impact of seismic image quality on fault interpretation uncertainty. / Alcalde, Juan; Bond, Clare E.; Johnson, Gareth; Ellis, Jennifer F.; Butler, Robert W.H.

In: GSA Today, Vol. 27, No. 2, 28.02.2017, p. 4-10.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Impact of seismic image quality on fault interpretation uncertainty

AU - Alcalde, Juan

AU - Bond, Clare E.

AU - Johnson, Gareth

AU - Ellis, Jennifer F.

AU - Butler, Robert W.H.

PY - 2017/2/28

Y1 - 2017/2/28

N2 - Uncertainty in the geological interpretation of a seismic image is affected by image quality. Using quantitative image analysis techniques, we have mapped differences in image contrast and reflection continuity for two different representations of the same grayscale seismic image, one in two-way-time (TWT) and one in depth. The contrast and reflection continuity of the depth image is lower than that of the TWT image. We compare the results of 196 interpretations of a single fault with the quality of the seismic image. Low contrast and continuity areas correspond to a greater range of interpreted fault geometries, resulting in a broader spread of fault interpretations in the depth image. Subtle differences in interpreted fault geometries introduce changes in fault characteristics (e.g., throw, heave) that are critical for understanding crustal and lithospheric processes. Seismic image quality impacts interpretation certainty, as evidenced by the increased range in fault interpretations. Quantitative assessments of image quality could inform: (1) whether model-based interpretation (e.g., fault geometry prediction at depth) is more robust than a subjective interpretation; and (2) uncertainty assessments of fault interpretations used to predict tectonic processes such as crustal extension.

AB - Uncertainty in the geological interpretation of a seismic image is affected by image quality. Using quantitative image analysis techniques, we have mapped differences in image contrast and reflection continuity for two different representations of the same grayscale seismic image, one in two-way-time (TWT) and one in depth. The contrast and reflection continuity of the depth image is lower than that of the TWT image. We compare the results of 196 interpretations of a single fault with the quality of the seismic image. Low contrast and continuity areas correspond to a greater range of interpreted fault geometries, resulting in a broader spread of fault interpretations in the depth image. Subtle differences in interpreted fault geometries introduce changes in fault characteristics (e.g., throw, heave) that are critical for understanding crustal and lithospheric processes. Seismic image quality impacts interpretation certainty, as evidenced by the increased range in fault interpretations. Quantitative assessments of image quality could inform: (1) whether model-based interpretation (e.g., fault geometry prediction at depth) is more robust than a subjective interpretation; and (2) uncertainty assessments of fault interpretations used to predict tectonic processes such as crustal extension.

KW - seismic image

KW - image quality

KW - fault interpretation

UR - https://www.research.ed.ac.uk/portal/en/publications/impact-of-seismic-image-quality-on-fault-interpretation-uncertainty(df4d0020-d78a-4e12-b40f-32a53ee40901).html

UR - http://www.geosociety.org/gsatoday/archive/index.htm?hkey=f79fe3e0-3564-4981-b2b9-813e959e51d5

U2 - 10.1130/GSATG282A.1

DO - 10.1130/GSATG282A.1

M3 - Article

VL - 27

SP - 4

EP - 10

JO - GSA Today

T2 - GSA Today

JF - GSA Today

SN - 1052-5173

IS - 2

ER -