| Title | Short-term surface deformation on the Northern Hayward Fault CA, and nearby landslides using polarimetric SAR interferometry (PolInSAR) |
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| Author | Alipour, S; Tiampo, K F; Samsonov, S V ; Gonzalez, P J |
| Source | Pure and Applied Geophysics vol. 172, issue 8, 2015 p. 1-15, https://doi.org/10.1007/s00024-013-0747-x |
| Image |  |
| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150200 |
| Publisher | Springer Nature |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| File format | pdf |
| Area | Northern Hayward Fault; Berkeley; California; United States of America |
| Lat/Long WENS | -122.2972 -122.2047 37.8828 37.8569 |
| Subjects | geophysics; remote sensing; landslides; landslide deposits; deformation; creep; PolInSAR; RADARSAT-2 |
| Illustrations | location maps; images; plots |
| Released | 2013 12 10 |
| Abstract | In this study, we analyze 25 RADARSAT-2 images from ascending and descending geometries to study the creep rate on the Hayward fault and landslide motions near Berkeley, CA. We applied a coherence
optimization technique from polarimetric synthetic aperture radar interferometry (PolInSAR) to increase the accuracy of the measurements. We resolve 3-5 mm/year of motion along the Hayward fault, in agreement with earlier creep estimates. We identify
a potential motion on secondary fault, northeast and parallel to the Hayward fault, which is creeping at a lower rate of *1.5 mm/year. In addition, we identify a number of landslides along the hills east of the fault that agree with earlier results
from advanced interferometric synthetic aperture radar (SAR) analysis and field investigations. We investigate four particular slope instabilities, one of which was marked as moderately active, and three as highly active, by earlier field
investigations. The resolved along-hill slope displacement is estimated at *23 mm/year. Our results demonstrate that PolInSAR is an effective method to increase the interferometric coherence and provide improved resolution of deformation features
associated with natural hazards. |
| GEOSCAN ID | 296900 |
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