Murray Global Intertidal Change Classification (UQ/murray/Intertidal/v1_1/global_intertidal)

Version v1.1

The Murray Global Intertidal Change 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 classification was implemented along the entire global coastline
between 60° North and 60° South from 1 January 1984 to 31 December 2016.
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)

This product depicts tidal flat ecosystems around the global coastline.

Pixels classified as tidal flat in the analysis represent several types of
tidal flat ecosystems, including unconsolidated fine-grain sediments (tidal
mudflats), unconsolidated coarse-grain sediments (tidal sand flats), and
consolidated sediments, organic material or rocks (wide tidal
rock-platforms), while excluding spectral signatures indicating the
presence of vegetation dominated intertidal ecosystems such as mangroves
and vegetated marshes. The analysis aimed to identify pixels that are
subject to regular tidal inundation, and therefore may also include other
intertidal systems where intertidal dynamics are observable.

classificationIntertertidal area classification for the interval.occurrence


Murray/UQ/Google/USGS/NASA (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.2
Keywords coastal, google, intertidal, landsat_derived, murray, tidal_flats, uq
License proprietary
Temporal Extent 12/31/1983, 4:00:00 PM - 12/31/2016, 4:00:00 PM
Citation 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.
Type image_collection
GSD metersm
Cadence years
cube:dimensions {"x":{"type":"spatial","axis":"x","extent":[-180,180]},"y":{"type":"spatial","axis":"y","extent":[-60,60]},"temporal":{"type":"temporal","extent":["1984-01-01T00:00:00Z","2017-01-01T00:00:00Z"]},"bands":{"type":"bands","values":["classification"]}}