Overview of hyperspectral remote sensing for mapping marine benthic habitats from airborne and underwater sensors

Heidi M. Dierssen

doi:10.1117/12.2026529

23 September 2013 Overview of hyperspectral remote sensing for mapping marine benthic habitats from airborne and underwater sensors

Heidi M. Dierssen

Author Affiliations +

Proceedings Volume 8870, Imaging Spectrometry XVIII; 88700L (2013) https://doi.org/10.1117/12.2026529
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

The seafloor, with its diverse and dynamic benthic habitats varying on meter to centimeter scales, is difficult to accurately monitor with traditional techniques. The technology used to build imaging spectrometers has rapidly advanced in recent years with the advent of smaller sensors and better signal-to-noise capabilities that has facilitated their use in mapping fine-scale benthic features. Here, the use of such sensors for hyperspectral remote sensing of the seafloor from both airborne and underwater platforms is discussed. Benthic constituents provide a so-called optical fingerprint with spectral properties that are often too subtle to be discerned with simple color photographs or multichannel spectrometers. Applications include the recent field validation of the airborne Portable Remote Imaging SpectroMeter (PRISM), a new imaging sensor package optimized for coastal ocean processes in Elkorn Slough California. In these turbid sediment-laden waters, only subtle spectral differences differentiate seafloor with sediment from that with eelgrass. The ultimate goal is to provide robust radiometric approaches that accurately consider light attenuation by the water column and are able to be applied to diverse habitats without considerable foreknowledge.

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Heidi M. Dierssen "Overview of hyperspectral remote sensing for mapping marine benthic habitats from airborne and underwater sensors", Proc. SPIE 8870, Imaging Spectrometry XVIII, 88700L (23 September 2013); https://doi.org/10.1117/12.2026529

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