What question did this study set out to answer?

The aim is to assess the effectiveness of a hybrid Satellite-Derived Bathymetry (SDB) approach for monitoring bathymetric data in complex coastal environments.

June 21, 2026Applied GeomaticsOpen Access

Satellite-derived bathymetry in optically complex waters: testing an SDB–KED hybrid approach in the Venice Lagoon

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Authors

FGFederica GerlaUniversità Iuav di Venezia CBCaterina BallettiUniversità Iuav di Venezia

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Implication

Randomized trial evaluates hybrid satellite-derived bathymetry method in the Venice Lagoon, suggesting effective monitoring for coastal management.

Key Points

The aim is to assess the effectiveness of a hybrid Satellite-Derived Bathymetry (SDB) approach for monitoring bathymetric data in complex coastal environments.
Applied the band ratio method using Sentinel-2 imagery, calibrated against a historical full-lagoon dataset.
Integrated satellite-derived data with Kriging with External Drift for improved accuracy, using multibeam survey data as ground truth.
Conducted a stratified calibration to differentiate sandy and muddy substrates.
Achieved RMSE of 1.09 m and R² of 0.87 for initial SDB approach across all depths.
The hybrid SDB-KED model demonstrated an R² of 0.73 and RMSE of 2.55 m with near-zero bias over validation points.
Residual uncertainties were found mainly in deeper water areas and at channel margins.

Cite This Study

Gerla et al. (2026) studied this question.

synapsesocial.com/papers/6a377fdd24f042ddf4c5a251 https://doi.org/10.1007/s12518-026-00742-x

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Implication

Randomized trial evaluates hybrid satellite-derived bathymetry method in the Venice Lagoon, suggesting effective monitoring for coastal management.

Satellite-derived bathymetry in optically complex waters: testing an SDB–KED hybrid approach in the Venice Lagoon

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Implication

Key Points

Cite This Study

Satellite-derived bathymetry in optically complex waters: testing an SDB–KED hybrid approach in the Venice Lagoon

Discussion

Member takes

Implication

Key Points

Cite This Study

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