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arcgis_geodatabase.sde.SDE_VAT_5
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1585051401572r7573341751958822
UNEP-WCMC
spatial-analysis@unep-wcmc.org
2020-03-24
https://data.unep-wcmc.org/datasets/47
Enterprise Geodatabase Raster Dataset
Mur001_IntertidalMarsh
2019
https://data.unep-wcmc.org/datasets/47
http://dx.doi.org/10.1038/s41586-018-0805-8
Murray N. J., Phinn S. R., DeWitt M., Ferrari R., Johnston R., Lyons M. B., Clinton N., Thau D. & Fuller R. A. (2019) The global distribution and trajectory of tidal flats. Nature. 565:222-225. http://dx.doi.org/10.1038/s41586-018-0805-8
Nick Murray
James Cook University
Senior Lecturer
nicholas.murray@jcu.edu.au
The dataset contains global maps of tidal flat ecosystems produced via a supervised classification of 707,528 Landsat Archive images. Each pixel was classified into tidal flat, permanent water or other with reference to a globally distributed set of training data.
The maps were created to identify the non-vegetated areas of Earth’s coastline that undergo regular tidal inundation. In some areas, these occur as tidal flats up to 24-km wide, such as the tidal mudflats of western Europe and East Asia. Our analysis included 56 predictor layers of which many were Landsat composite metrics designed to identify individual pixels that undergo frequent wetting and drying.
The maps were created to identify the non-vegetated areas of Earth's coastline that undergo regular tidal inundation. In some areas, these occur as tidal flats up to 24- km wide, such as the tidal mudflats of western Europe and East Asia. Our analysis included 56 predictor layers, many of which were Landsat composite metrics designed to identify individual pixels that undergo frequent wetting and drying.
The image collection consists consists of a time-series of 11 global maps of tidal flats at 30m pixel resolution for set time-periods (1984−1986; 1987−1989;
1990−1992; 1993−1995; 1996−1998; 1999−2001; 2002−2004; 2005−2007; 2008−2010; 2011−2013; 2014−2016). The 2014-2016 global extent can be downloaded through the Ocean Data Viewer but for previous time- periods please see https://www.intertidal.app/download/direct-download.
This product depicts tidal flat ecosystems around the global coastline.
Nick Murray
30
Intertidal Marsh
UNEP-WCMC
Ocean+ Habitats
landsat derived
uq
murray
tidal flats
intertidal
coastal
Global
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179.999995508415
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59.9999966908927
<a href='http://creativecommons.org/licenses/by/4.0/'></a><br />This work is licensed under a <a href='http://creativecommons.org/licenses/by/4.0/'>Creative Commons Attribution 4.0 International License</a>.
Microsoft Windows 10 Version 10.0 (Build 19043) ; Esri ArcGIS 12.4.2.19948
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dataset
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548492
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