2005
DOI: 10.3997/1873-0604.2005034
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Semblance‐based topographic migration (SBTM): a method for identifying fracture zones in 3D georadar data

Abstract: Steep‐dipping fracture zones are generally difficult to delineate using traditional ground‐penetrating radar (georadar) techniques. Evidence for their presence in standard georadar images may be either completely absent or limited to diffractions and/or chaotic reflection patterns. To address this issue, we present a novel three‐dimensional (3D) migration scheme based on computations of semblance. This new approach, which accounts for undulating surface topography, emphasizes diffractors while markedly reducin… Show more

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Cited by 25 publications
(21 citation statements)
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“…One system parallels the bedrock foliation. Fracture zones/faults of this system can be traced on surface‐based 3‐D georadar data from their exposures at the surface to 10–20 m depth [ Heincke et al , 2005, 2006a]. The other two systems are steeply dipping, with strikes ranging from northeast‐southwest to northwest‐southeast (Figure 2a).…”
Section: Randa Study Sitementioning
confidence: 99%
See 3 more Smart Citations
“…One system parallels the bedrock foliation. Fracture zones/faults of this system can be traced on surface‐based 3‐D georadar data from their exposures at the surface to 10–20 m depth [ Heincke et al , 2005, 2006a]. The other two systems are steeply dipping, with strikes ranging from northeast‐southwest to northwest‐southeast (Figure 2a).…”
Section: Randa Study Sitementioning
confidence: 99%
“…The other two systems are steeply dipping, with strikes ranging from northeast‐southwest to northwest‐southeast (Figure 2a). Borehole georadar reflection data and semblance‐migrated versions of the surface‐based georadar data allow many steeply dipping fracture zones/faults to be mapped to depths as great as 75 m [ Heincke et al , 2006a; Spillmann et al , 2007]. The instability of the mountain slope appears to be strongly influenced by the steeply dipping fracture zones/faults, some of which have openings of tens of centimeters and are actively moving [ Willenberg , 2004; Spillmann et al , 2007].…”
Section: Randa Study Sitementioning
confidence: 99%
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“…In an attempt to improve our understanding of failure mechanisms in massive crystalline rock, the unstable mountain slope at Randa has been subjected to a variety of geological, geotechnical and geophysical investigations (Eberhardt et al, 2001;Willenberg et al, 2004;Willenberg, 2004;Heincke et al, 2005Heincke et al, , 2006 in press) Three moderately deep boreholes (SB120, SB50S and SB50N) were drilled through two of the flat terraces ( Fig. 2).…”
Section: Boreholesmentioning
confidence: 99%