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: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

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Cumulative views and downloads (calculated since 27 Jan 2023)

Month	HTML	PDF	XML	Total
Jan 2023	75	26	5	106
Feb 2023	85	30	6	121
Mar 2023	44	23	5	72
Apr 2023	17	11	0	28
May 2023	21	11	0	32
Jun 2023	12	5	1	18
Jul 2023	21	14	3	38
Aug 2023	9	5	0	14
Sep 2023	16	10	0	26
Oct 2023	252	73	6	331
Nov 2023	69	16	3	88
Dec 2023	45	12	0	57
Jan 2024	73	8	0	81
Feb 2024	17	10	3	30
Mar 2024	36	21	4	61
Apr 2024	38	13	7	58
May 2024	21	6	5	32
Jun 2024	17	12	2	31
Jul 2024	26	7	5	38
Aug 2024	24	7	7	38
Sep 2024	23	9	6	38
Oct 2024	30	21	3	54
Nov 2024	42	5	2	49
Dec 2024	25	4	1	30
Jan 2025	30	8	0	38
Feb 2025	31	5	3	39
Mar 2025	32	14	1	47
Apr 2025	34	11	1	46
May 2025	31	4	1	36
Jun 2025	62	24	0	86
Jul 2025	43	17	2	62
Aug 2025	42	8	0	50
Sep 2025	171	11	1	183
Oct 2025	49	13	3	65
Nov 2025	71	19	2	92
Dec 2025	94	14	5	113
Jan 2026	154	13	5	172
Feb 2026	277	9	2	288
Mar 2026	51	18	4	73
Apr 2026	87	36	6	129

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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.