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subpixel offset

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Journal Article
Published: 24 November 2020
Bulletin of the Seismological Society of America (2021) 111 (2): 1032–1042.
... 500,000 people. However, due to the absence of a local seismic and Global Positioning System network in the vicinity, the fault location, system, and slip distribution of this earthquake are not well documented. In this study, we use the subpixel offset method on the Copernicus Sentinel‐1 Synthetic...
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Journal Article
Published: 01 July 2013
Seismological Research Letters (2013) 84 (4): 579–593.
... with pixel‐offset tracking (subpixel correlation) along‐track displacements from the CSK pair. Continuous GPS data posted to the Group on Earth Observations ( GEO ) Geohazards Supersite by the Turkish government were analyzed to estimate the three‐component station coseismic displacements. We also...
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Journal Article
Published: 01 May 2002
Bulletin of the Seismological Society of America (2002) 92 (4): 1341–1354.
... interferogram reveals significant west-side-down dip-slip (∼1.0 m) which reduces the strike-slip estimates by 1 to 2 m, especially along the northern half of the rupture. A spike in the strike-slip displacement of 6 m is observed in central part of the rupture. This large offset is confirmed by subpixel cross...
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Journal Article
Published: 21 February 2018
Seismological Research Letters (2018) 89 (3): 1129–1136.
... can reach subpixel accuracy. Generally, InSAR image registration can be divided into two steps. The first step is to obtain tie points and their relative offsets between master and slave image patches. The next step is to obtain a mapping function by fitting the offsets ( Sansosti et al. , 2006...
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Journal Article
Published: 22 January 2020
Seismological Research Letters (2020) 91 (4): 1986–1997.
... and their possible triggering mechanism. Here, we provide a dataset composed of high‐resolution optical imagery, pixel‐value difference maps, .kmz fracturing mapping, and horizontal deformation maps derived from subpixel image correlation, which can uniquely separate the surface fracturing and deformation between...
FIGURES
Journal Article
Published: 01 February 2010
Bulletin of the Seismological Society of America (2010) 100 (1): 267–288.
...A. Ozgun Konca; Sebastien Leprince; Jean-Philippe Avouac; Don V. Helmberger Abstract We analyze the rupture process of the 1999 M w 7.1 Duzce earthquake using seismological, remote sensing, and geodetic data. Ground deformation measured from the subpixel cross correlation of Satellite Pour...
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Journal Article
Journal: Economic Geology
Published: 01 August 2014
Economic Geology (2014) 109 (5): 1179–1221.
... intrusive rocks. Alunite composition varies from pure K to intimate mixtures of Na-K endmembers with subpixel occurrences of huangite, the Ca analogue of alunite. Intimately mixed Na-K alunite marks areas of relatively lower alteration temperature, whereas co-occurring Na-alunite and dickite may delineate...
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Journal Article
Published: 22 January 2019
Bulletin of the Seismological Society of America (2019) 109 (2): 780–796.
... traces and the distribution of near‐fault offset during the 2014 Nagano earthquake in Japan ( M w 6.2) using pre‐ and postearthquake topographic data acquired by light detection and ranging (lidar) surveys. We conducted differential lidar (Dlidar) analysis based on the particle image velocimetry (PIV...
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Journal Article
Published: 07 November 2018
Seismological Research Letters (2019) 90 (1): 97–107.
..., which broke during the 2018 Hualien earthquake ( M w 6.4) in eastern Taiwan. Correlation of pre‐ and postearthquake stereo Pléiades images reveals detailed 3D surface displacements along the 8‐km‐long Milun fault, with maximum ∼ 1 m left‐lateral offsets across the fault. Along the northern section...
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Journal Article
Published: 01 February 2013
Bulletin of the Seismological Society of America (2013) 103 (1): 507–518.
.... , 2002 ). In this technique, we divide one single‐look complex ( SLC ) image into a number of patches and derive their offsets from the corresponding patches in the other SLC image with a subpixel‐level precision, by cross‐correlating backscatter intensity samples from a master image (the data before...
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Image
Coseismic displacement across transect (a) a–a′ (Mubi fault), (b) b–b′ (wes...
Published: 24 November 2020
Figure 7. Coseismic displacement across transect (a) a–a′ (Mubi fault), (b) b–b′ (west of Mananda fault), and (c) c–c′ (east of Mananda fault). For each transect, black dots represent the subpixel offset measurements that are less than 6 km away from the transect. Red and blue curves show
Journal Article
Published: 05 February 2020
Seismological Research Letters (2020) 91 (4): 1998–2009.
... (LoS) Interferometric Synthetic Aperture Radar displacements derived from both Sentinel‐1 and CSK data are in good agreement with GNSS measurements. The maximum coseismic displacement occurs near the M w 7.1 epicenter, with an estimated fault offset of ∼ 4.5 m on a northwest‐striking rupture. Pixel...
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Journal Article
Journal: Geosphere
Published: 01 May 2006
Geosphere (2006) 2 (3): 187–194.
...Cara G. Schiek; José M. Hurtado, Jr Abstract The Kokoxili earthquake occurred on 14 November 2001 along the Kunlun fault. To analyze the type of deformation along several segments of the fault, this study employs Fourier transform terrain-change detection to detect horizontal pixel offsets between...
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Journal Article
Published: 19 August 2020
Seismological Research Letters (2020) 91 (6): 3148–3160.
..., it is important to ascertain if the source of the tsunami is indeed from coseismic deformation, or something else, such as shaking induced landsliding. Here we determine the leading cause of the tsunami is a complex combination of both. We constrain the coseismic slip from the earthquake using static offsets from...
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Journal Article
Published: 13 May 2016
Quarterly Journal of Engineering Geology and Hydrogeology (2016) 49 (3): 203–211.
... and atmospheric disturbance. Large-field displacement could be underestimated as a result of these limitations. A point-like target offset tracking (PTOT) method that solely uses SAR pixel amplitude information through highly accurate image matching can measure 2D displacements in the azimuth and range directions...
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Journal Article
Published: 04 March 2020
Seismological Research Letters (2020) 91 (4): 2035–2046.
.... ‡ SAR pixel offset looks are size of image matching window. We also applied pixel offset tracking analysis to the Sentinel‐1 SLC images on both tracks, sometimes called subpixel correlation. This analysis does cross correlation between the SAR amplitude images, after the geometric coregistration...
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Journal Article
Journal: Geophysics
Published: 22 June 2012
Geophysics (2012) 77 (4): H45–H55.
...Jens S. Buchner; Ute Wollschläger; Kurt Roth ABSTRACT A new inversion scheme for common-offset ground-penetrating radar measurements at multiple antenna separations was proposed, which is intermediate between inverting of picked reflectors using ray-tracing and full-waveform inversion...
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Journal Article
Published: 24 October 2018
Seismological Research Letters (2019) 90 (1): 78–87.
... responsible for active deformation were not well understood before this event. We analyzed Interferometric Synthetic Aperture Radar (InSAR) and Global Positioning System (GPS) data and produced a 3D displacement model with InSAR and azimuth offset of radar images to document surface deformation induced...
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Journal Article
Published: 01 May 2002
Bulletin of the Seismological Society of America (2002) 92 (4): 1377–1389.
... in the southern California Mojave Desert. The data include synthetic aperture radar interferograms (InSAR) from both ascending and descending orbits, radar amplitude image offset fields (SARIO) for both ascending and descending azimuth directions, and campaign GPS observations from 55 stations provided by Agnew...
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Image
Digital elevation map of the studied region in the southern Highlands plott...
Published: 24 November 2020
with Global CMT moment tensor solutions. Yellow lines indicate the up‐dip edge of the fault plane, and black lines show the fault traces shown in subpixel offsets (Fig.  3 ). The red box in the inset shows the study area. AUS, Australia; IDN, Indonesia; PO, Pacific Ocean; PNG, Papua New Guinea. The color