Treatise on Geophysics 2015
DOI: 10.1016/b978-0-444-53802-4.00067-1
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Geodetic Imaging Using Optical Systems

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Cited by 31 publications
(26 citation statements)
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“…OIC has shown great utility in previous studies measuring earthquake‐induced surface deformation (e.g., Avouac et al, ; Avouac & Leprince, ; Ayoub et al, ; Barnhart et al, ; Hollingsworth et al, , ; Leprince, Ayoub, et al (); Leprince, Barbot, et al (); Leprince et al, ; Michel & Avouac, , ; Milliner et al, ; Milliner, Dolan, et al, ; Milliner, Sammis, et al, ; Wei et al, ; Zinke et al, ). OIC processing tools, such as COSI‐Corr (Leprince, Ayoub, et al, ), MicMac (Rosu et al, ) and Ames Stereo Pipeline (Shean et al, ), provide fast and cost‐effective means for determining continuous maps of on‐fault and off‐fault 2‐D surface displacement with limited decorrelation near the fault (in stark contrast with InSAR measurements, which typically decorrelate close to fault ruptures if the strain gradient between neighboring pixels exceeds a phase cycle).…”
Section: Methods and Observationsmentioning
confidence: 99%
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“…OIC has shown great utility in previous studies measuring earthquake‐induced surface deformation (e.g., Avouac et al, ; Avouac & Leprince, ; Ayoub et al, ; Barnhart et al, ; Hollingsworth et al, , ; Leprince, Ayoub, et al (); Leprince, Barbot, et al (); Leprince et al, ; Michel & Avouac, , ; Milliner et al, ; Milliner, Dolan, et al, ; Milliner, Sammis, et al, ; Wei et al, ; Zinke et al, ). OIC processing tools, such as COSI‐Corr (Leprince, Ayoub, et al, ), MicMac (Rosu et al, ) and Ames Stereo Pipeline (Shean et al, ), provide fast and cost‐effective means for determining continuous maps of on‐fault and off‐fault 2‐D surface displacement with limited decorrelation near the fault (in stark contrast with InSAR measurements, which typically decorrelate close to fault ruptures if the strain gradient between neighboring pixels exceeds a phase cycle).…”
Section: Methods and Observationsmentioning
confidence: 99%
“…Crucially, the WorldView images were acquired at oblique (off‐nadir) viewing geometries, thus preserving a stereo effect between the two images, which we exploited using a simple ray tracing approach to precisely recover the vertical dimension of ground motion. Following the methods of Avouac and Leprince (), we chose sets of WorldView images such that each ground location was imaged by two preearthquake images and two postearthquake images (each with opposing viewing geometries to exploit the stereo effect). For each set, we coregistered three of the images to a master preearthquake image and orthorectified all four using a relatively coarse‐resolution (8 m) DEM to remove long‐wavelength topographic distortions.…”
Section: Methods and Observationsmentioning
confidence: 99%
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“…The location of the peak in C defines the relative displacement between z 1 and z 2 , which has subpixel precision by interpolating C. We implemented equation (1) by modifying the program ImGRAFT (Messerli & Grinsted, 2014; supporting information) and using a 65-m patch size to correlate with the surrounding 97-m wide search region. To extend the horizontal displacement field to 3-D, we subtracted the DEMs, documenting the local vertical elevation change at every grid cell, even where horizontal displacements were undefined (Avouac & Leprince, 2015). To extend the horizontal displacement field to 3-D, we subtracted the DEMs, documenting the local vertical elevation change at every grid cell, even where horizontal displacements were undefined (Avouac & Leprince, 2015).…”
Section: Aerial Lidar Correlationmentioning
confidence: 99%