PreprintArticleVersion 1This version is not peer-reviewed
Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean
Version 1
: Received: 18 October 2024 / Approved: 19 October 2024 / Online: 21 October 2024 (09:11:36 CEST)
How to cite:
Muhammad, F.; Tsimpouxis, I.; Sternberg, H. Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean. Preprints2024, 2024101545. https://doi.org/10.20944/preprints202410.1545.v1
Muhammad, F.; Tsimpouxis, I.; Sternberg, H. Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean. Preprints 2024, 2024101545. https://doi.org/10.20944/preprints202410.1545.v1
Muhammad, F.; Tsimpouxis, I.; Sternberg, H. Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean. Preprints2024, 2024101545. https://doi.org/10.20944/preprints202410.1545.v1
APA Style
Muhammad, F., Tsimpouxis, I., & Sternberg, H. (2024). Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean. Preprints. https://doi.org/10.20944/preprints202410.1545.v1
Chicago/Turabian Style
Muhammad, F., Ioannis Tsimpouxis and Harald Sternberg. 2024 "Investigating the impact of Spatio-Temporal Variations of Water Column Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean" Preprints. https://doi.org/10.20944/preprints202410.1545.v1
Abstract
Bathymetric data is crucial for benthic monitoring in coastal areas but is traditionally obtained through costly and geographically limited acoustic methods. This study uses Satellite-Derived Bathymetry (SDB) in the Eastern Mediterranean, focusing on the Cretan Sea in Greece. It explores how variations in water column optical properties affect SDB models over four years (2019-2022) using Sentinel-2 satellite data. The research covers two areas with contrasting features: Chania Gulf and the open waters around Chrissi Island. Three methodologies were tested: band-ratio, linear-logarithmic, and an inherent optical properties linear model. Significant spatio-temporal variations in SDB models were found due to seasonal changes in water column properties, such as temperature and suspended organic materials. Linear optical properties-based methods performed best, achieving a mean RMSE close to 1 meter, slightly outperforming the ratio-based method. The logarithmic method was less effective, with RMSE values ranging from 1.3 to 1.5 meters. A preliminary Kalman Filter (KF) analysis increased RMSE to the decimeter level. This study demonstrates the impact of water column optical properties on SDB models. It highlights the value of SDB for cost-effective, high-resolution coastal mapping in complex coastlines like those in Greece.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.