Three decades of coastal subsidence in the slow-moving  Nice Côte d'Azur Airport area (France) revealed by  InSAR (interferometric synthetic-aperture radar):  insights into the deformation mechanism

Cavalié, Olivier; Cappa, Frédéric; Pinel-Puysségur, Béatrice

doi:https://doi.org/10.5194/nhess-23-3235-2023

Articles | Volume 23, issue 10

https://doi.org/10.5194/nhess-23-3235-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-23-3235-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 10

Research article

|

10 Oct 2023

Research article |

| 10 Oct 2023

Three decades of coastal subsidence in the slow-moving Nice Côte d'Azur Airport area (France) revealed by InSAR (interferometric synthetic-aperture radar): insights into the deformation mechanism

Olivier Cavalié, Frédéric Cappa, and Béatrice Pinel-Puysségur

Data sets

Vertical velocity maps for the Nice Côte d'Azur airport measured by InSAR O. Cavalié https://doi.org/10.5281/zenodo.7038263

ERS-1/2 SAR IM L0 [SAR_IM__0P] ESA https://earth.esa.int/eogateway/catalog/ers-1-2-sar-im-l0-sar_im__0p-

Envisat ASAR IM L0 [ASA_IM__0P] ESA https://earth.esa.int/eogateway/catalog/envisat-asar-im-l0-asa_im__0p-

Short summary

Coastal areas are fragile ecosystems that face multiple hazards. In this study, we measured the downward motion of the Nice Côte d'Azur Airport (France) that was built on reclaimed area and found that it has subsided from 16 mm yr^-1 in the 1990s to 8 mm yr^-1 today. A continuous remote monitoring of the platform will provide key data for a detailed investigation of future subsidence maps, and this contribution will help to evaluate the potential failure of part of the airport platform.