L'ensemble de données Murray Global Intertidal Change contient des cartes mondiales des écosystèmes de vasières produites à l'aide d'une classification supervisée de 707 528 images de l'archive Landsat. Chaque pixel a été classé dans la catégorie "vasière", "eau permanente" ou "autre" en référence à un ensemble de données d'entraînement distribué à l'échelle mondiale.
La classification a été mise en œuvre sur l'ensemble du littoral mondial entre 60° Nord et 60° Sud, du 1er janvier 1984 au 31 décembre 2016.
La collection d'images se compose d'une série temporelle de 11 cartes mondiales de vasières avec une résolution de 30 mètres par pixel pour des périodes définies (1984-1986 ; 1987-1989 ; 1990-1992 ; 1993-1995 ; 1996-1998 ; 1999-2001 ; 2002-2004 ; 2005-2007 ; 2008-2010 ; 2011-2013 ; 2014-2016).
Indicateur signalant les limites spatiales de l'implémentation du classificateur de vasières, telles qu'elles sont définies par les limites altitudinales (+100 m) et bathymétriques (-100 m).
Bracelets
Taille des pixels 30 mètres
Bandes de fréquences
Nom
Unités
Taille des pixels
Description
datamask
occurrence
mètres
Indicateur d'inclusion des données.
Masque de bits pour le masque de données
Bit 0 : Masque de données
0 : Aucune donnée
1 : Zone classifiée
Conditions d'utilisation
Conditions d'utilisation
Ce contenu est concédé sous licence internationale Creative Commons Attribution 4.0.
Toute utilisation des données intertidales doit inclure une mention appropriée, y compris en citant l'article de revue associé.
Citations
Citations :
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.
doi:10.1038/s41586-018-0805-8,
Murray, N. J., Phinn, S. P., Fuller, R. A., DeWitt, M., Ferrari, R.,
Johnston, R., Clinton, N., & Lyons, M. B. (2022). Cartes mondiales haute résolution des écosystèmes de vasières de 1984 à 2019. Scientific Data,
9(1).
doi:10.1038/s41597-022-01635-5,
L'ensemble de données Murray Global Intertidal Change contient des cartes mondiales des écosystèmes de vasières produites à l'aide d'une classification supervisée de 707 528 images de l'archive Landsat. Chaque pixel a été classé dans la catégorie "vasière", "eau permanente" ou "autre" en référence à un ensemble de données d'entraînement distribué à l'échelle mondiale. La classification a été implémentée le long de…
[null,null,[],[[["\u003cp\u003eThe Murray Global Intertidal Change Dataset provides global maps of tidal flat ecosystems based on a supervised classification of over 700,000 Landsat images from 1984 to 2016.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers coastlines between 60° North and 60° South, classifying each 30m pixel as tidal flat, permanent water, or other.\u003c/p\u003e\n"],["\u003cp\u003eEleven global maps of tidal flats are included, representing different time periods between 1984 and 2016.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is licensed under a Creative Commons Attribution 4.0 International License, requiring proper acknowledgment and citation in any use.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset was created by Murray et al.and is available for exploration and analysis within Google Earth Engine.\u003c/p\u003e\n"]]],["The Murray Global Intertidal Change Dataset provides global tidal flat ecosystem maps from 1984 to 2016, derived from 707,528 Landsat images. Pixels are classified as tidal flat, permanent water, or other, using training data. The dataset contains eleven 30m-resolution time-series maps, covering 1984-2016, along the global coastline between 60°N and 60°S. It includes a `datamask` band indicating data inclusion and can be accessed through Google Earth Engine. Citations are required for use.\n"],null,["# Murray Global Intertidal Change Data Mask\n\nDataset Availability\n: 1984-01-01T00:00:00Z--2017-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [Murray/UQ/Google/USGS/NASA](https://intertidal.app)\n\nTags\n:\n[coastal](/earth-engine/datasets/tags/coastal) [google](/earth-engine/datasets/tags/google) [intertidal](/earth-engine/datasets/tags/intertidal) [landsat-derived](/earth-engine/datasets/tags/landsat-derived) [murray](/earth-engine/datasets/tags/murray) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [tidal-flats](/earth-engine/datasets/tags/tidal-flats) [uq](/earth-engine/datasets/tags/uq) \n\n#### Description\n\nThe Murray Global Intertidal Change Dataset contains global maps of tidal flat\necosystems produced via a supervised classification of 707,528 Landsat\nArchive images. Each pixel was classified into tidal flat, permanent water\nor other with reference to a globally distributed set of training data.\n\nThe classification was implemented along the entire global coastline\nbetween 60° North and 60° South from 1 January 1984 to 31 December 2016.\nThe image collection consists consists of a time-series of 11 global maps\nof tidal flats at 30m pixel resolution for set time-periods (1984-1986;\n1987-1989; 1990-1992; 1993-1995; 1996-1998; 1999-2001; 2002-2004;\n2005-2007; 2008-2010; 2011-2013; 2014-2016)\n\nFlag indicating the spatial limits of the implementation of the tidal flat\nclassifier as defined by altitudinal (+100m) and bathymetric (-100m) limits.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|------------|------------|------------|------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `datamask` | occurrence | meters | A flag to indicate data inclusion. |\n| Bitmask for datamask - Bit 0: Data mask - 0: No data - 1: Classified area ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n### Terms of Use\n\n**Terms of Use**\n\nThis work is licensed under a Creative Commons Attribution 4.0\nInternational License.\n\nAny use of the intertidal data must include proper acknowledgement,\nincluding citing the associated journal article.\n\n### Citations\n\nCitations:\n\n- Murray, N.J., Phinn, S.R., DeWitt, M., Ferrari, R., Johnston, R., Lyons, M.B.,\n Clinton, N., Thau, D. \\& Fuller, R.A. (2019) The global distribution and\n trajectory of tidal flats. Nature, 565, 222-225.\n [doi:10.1038/s41586-018-0805-8](https://doi.org/10.1038/s41586-018-0805-8),\n- Murray, N. J., Phinn, S. P., Fuller, R. A., DeWitt, M., Ferrari, R.,\n Johnston, R., Clinton, N., \\& Lyons, M. B. (2022). High-resolution global\n maps of tidal flat ecosystems from 1984 to 2019. Scientific Data,\n 9(1).\n [doi:10.1038/s41597-022-01635-5](https://doi.org/10.1038/s41597-022-01635-5),\n\n### DOIs\n\n- \u003chttps://doi.org/10.1038/s41586-018-0805-8\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('UQ/murray/Intertidal/v1_1/data_mask');\n\nvar visualization = {\n bands: ['datamask'],\n min: 0,\n max: 1,\n palette: ['000000', 'ffffff']\n};\n\nMap.setCenter(126.6339, 37.4394, 10);\n\nMap.addLayer(dataset, visualization, 'Data mask');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/UQ/UQ_murray_Intertidal_v1_1_data_mask) \n[Murray Global Intertidal Change Data Mask](/earth-engine/datasets/catalog/UQ_murray_Intertidal_v1_1_data_mask) \nThe 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 ... \nUQ/murray/Intertidal/v1_1/data_mask, coastal,google,intertidal,landsat-derived,murray,surface-ground-water,tidal-flats,uq \n1984-01-01T00:00:00Z/2017-01-01T00:00:00Z \n-60 -180 60 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.1038/s41586-018-0805-8](https://doi.org/https://intertidal.app)\n- [https://doi.org/10.1038/s41586-018-0805-8](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/UQ_murray_Intertidal_v1_1_data_mask)"]]
