4SM ETM chinchorro atoll

Optical calibration, bathymetry, water column correction and bottom typing of shallow marine areas, using passive remote sensing imageries

Landsat ETM and OLI images
of Chinchorro atoll, Gulf of Mexico

Work completely updated in january 2016
return to 4SM Study Cases

Please refer to "Satellite Remote Sensing of Coral Reef Habitats Mapping in Shallow Waters
at Banco Chinchorro Reefs, México: A Classification Approach " AI Contreras-Silva et al 2012
Please also refer to "Bathymetric chart (1:70,000) of Chinchorro Bank, Mexican Caribbean" Juan_P_Carricart-Ganivet et al 2003
Please also refer to "The Shallow and Deep Bathymetry of the Banco Chinchorro Reef in the Mexican Caribbean" Alicia González et al 2003
Please also refer to Alacranes atoll

ETM 25 january 2000

ETM 29 march 2000 in ~Sargasso Sea waters!

OLI 26 january 2015

This work incorporates all the recent 4SM improvements
I want to process a PAN-sharpened Landsat 8 OLIP image of this scene

Bathymetric map (2003) downloaded/extracted from the Internet	4SM retrieved depth, from ETM image Jan 25th 2000

Chinchorro ETM 29 march 2000: retrieved depth

a tide height of approx ~1.5 m would appear to fit the 29 march 2000 ETM scene
the bathymetric map is quite difficult to interpret, while the satellite derived image is easy to understand in comparison

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