| Title | C-band D-InSAR and field data for calibrating a groundwater flow and land subsidence model |
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| Author | Calderhead, A I; Martel, R; Rivera, A ; Garfias, J; Alasset, P -J |
| Source | vol. 4, 5417352, 2009 p. IV149-IV152, https://doi.org/10.1109/IGARSS.2009.5417352 |
| Year | 2009 |
| Alt Series | Natural Resources Canada, Contribution Series 20182878 |
| Publisher | IEEE |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Released | 2009 01 01 |
| Abstract | Differential Synthetic Aperture Radar Interferometry (D-InSAR) is a powerful technique used for detecting and measuring surface deformation with sub-centimetre accuracy. Using C-band data from three
different satellites, the D-InSAR technique is used to calibrate a coupled groundwater flow and land subsidence numerical model. Additionally, D-InSAR results from different sensors are compared and contrasted. When comparing D-InSAR results with
extensometers and water levels, a direct correlation is nociced. For all D-InSAR image pairs, large baselines, atmospheric effects, temporal decorrelation, and vegetative cover were limiting factors in obtaining a maximum number of usable
interferograms. The total maximum subsidence for a point location in the valley between November 2003 and May 2008 is approximately 40 cm reaching a maximum total subsidence of over 2.0 metres since 1962. When contrasting the ENVISAT ASAR and
RADARSAT-1 data, subsidence rates were similar yet the distribution had significant differences. Additionally, ENVISAT's shorter baselines led to more accurate results. ©2009 IEEE. |
| GEOSCAN ID | 312722 |
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