Evaluating InSAR-derived rates of surface-elevation change along the central U.S. Gulf Coast

Li, Guandong; Törnqvist, Torbjörn E.; Chen, Jingyi

doi:10.5194/eo-1-1-2026

Articles | Volume 1, issue 1

https://doi.org/10.5194/eo-1-1-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/eo-1-1-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 1, issue 1

Research article

|

05 Jun 2026

Research article |

| 05 Jun 2026

Evaluating InSAR-derived rates of surface-elevation change along the central U.S. Gulf Coast

Guandong Li, Torbjörn E. Törnqvist, and Jingyi Chen

Supplement

https://doi.org/10.5194/eo-1-1-2026-supplement

Data sets

GNSS data along the central U.S. Gulf Coast Guandong Li https://doi.org/10.5281/zenodo.20285963

Vertical Land Motion Dataset for the US Gulf Coast Leonard Ohenhen and Manoochehr Shirzaei https://doi.org/10.7294/22731326.v2

``InSAR-derived Average Vertical Surface Deformation Rate (January 2017-December 2020) Over Upper Texas and Lousiana Coasts'' Ke Wang https://doi.org/10.18738/T8/3HFQVJ

Short summary

Subsidence, or the sinking of land, threatens the U.S. Gulf Coast, where millions face growing flood risks from sea-level rise. Measuring the subsidence is essential for coastal planning and climate adaptation. Satellite radar (InSAR) is widely used to measure subsidence, but studies often disagree. Comparing two recent datasets, we found widespread disagreements except in dense urban areas. Decision makers should use coastal InSAR products with caution until these discrepancies are resolved.