This study assessed the use of PRISMA hyperspectral data for detecting coral bleaching in Calatagan, Batangas, alongside sea surface temperature (SST) for validation. In-situ data and interviews with local experts provided additional insights. Sentinel-2 L2A data was used for comparison. The Spectral Angle Mapper (SAM) classified 27.12% of the coral area as bleached. T-tests showed two green bands were not separable, and box plots revealed lower reflectance values for bleached corals. The method achieved 60.6% accuracy for bleached corals and 63.4% overall. Hyperspectral imagery is effective for coral bleaching detection, with improvements suggested for sample diversity.

This paper is part of the ISPRS TC V Mid-term Symposium “Insight to Foresight via Geospatial Technologies” on 06-08 August 2024 in Manila, Philippines.

Appropriate citation:

Rivera, F. D., Buenavista, G. E., Tamondong, A., and Blanco, A.: Coral Bleaching Detection Using PRISMA Hyperspectral Satellite Imagery in Calatagan, Batangas, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., X-5-2024, 165–172, https://doi.org/10.5194/isprs-annals-X-5-2024-165-2024, 2024.