El Modelo de elevación de referencia de la Antártida (REMA) es un modelo digital de superficie (DSM) de alta resolución y con marca de tiempo de la Antártida con resoluciones espaciales de 2 y 8 metros.
Los archivos DEM de la franja corresponden al área superpuesta de las franjas de pares de imágenes estereoscópicas de entrada, ya que se recopilan con la constelación de satélites en órbita polar de DigitalGlobe. Las dimensiones de la banda del DEM variarán según el sensor satelital que adquirió las imágenes y el ángulo fuera del nadir de la recopilación. La mayoría de las franjas tienen entre 13 y 17 km de ancho, y entre 110 y 120 km de largo.
Bandas
Tamaño del píxel 8 metros
Bandas
Nombre
Unidades
Tamaño de los píxeles
Descripción
elevation
m
metros
Elevación
matchtag
metros
Máscara de bits ráster que indica el procesamiento de píxeles del MDT
Máscara de bits para la etiqueta de coincidencia
Bit 0: Procesamiento de píxeles
0: Los píxeles se interpolaron.
1: Los píxeles se derivan de una correlación estéreo
Condiciones de Uso
Condiciones de Uso
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Cuando usan datos del PGC en Earth Engine, los usuarios aceptan citar al PGC y su patrocinio por parte de la NSF. También se debe atribuir correctamente la fuente original de todos los datos de terceros que proporcione PGC.
El Modelo de elevación de referencia de la Antártida (REMA) es un modelo digital de superficie (DSM) de alta resolución y con marca de fecha y hora de la Antártida con resoluciones espaciales de 2 y 8 metros. Los archivos DEM de banda corresponden al área superpuesta de las bandas de pares de imágenes estereoscópicas de entrada, ya que se recopilan con la constelación de satélites en órbita polar de DigitalGlobe. Tira…
[null,null,[],[[["\u003cp\u003eREMA is a high-resolution Digital Surface Model (DSM) of Antarctica, available at 2-meter and 8-meter resolutions, covering the period from 2009 to 2018.\u003c/p\u003e\n"],["\u003cp\u003eIt is composed of strip DEM files representing the overlapping areas of stereoscopic imagery collected by DigitalGlobe's satellites.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes elevation and a matchtag band indicating pixel processing, with strip dimensions varying based on sensor and collection angle.\u003c/p\u003e\n"],["\u003cp\u003eUsers must acknowledge the National Science Foundation (NSF) and PGC when using this data, following the PGC's Acknowledgement Policy.\u003c/p\u003e\n"],["\u003cp\u003eREMA data can be explored and analyzed within Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# REMA Strips 8m\n\nDataset Availability\n: 2009-01-01T00:00:00Z--2018-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [University of Minnesota Polar Geospatial Center](https://www.pgc.umn.edu/data/arcticdem/)\n\nTags\n:\n[dem](/earth-engine/datasets/tags/dem) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [geophysical](/earth-engine/datasets/tags/geophysical) [pgc](/earth-engine/datasets/tags/pgc) [rema](/earth-engine/datasets/tags/rema) [umn](/earth-engine/datasets/tags/umn) \n\n#### Description\n\nThe Reference Elevation Model of Antarctica (REMA) is a high resolution,\ntime-stamped Digital Surface Model (DSM) of Antarctica at 2-meter and 8-meter\nspatial resolutions.\n\nStrip DEM files correspond to the overlapping area of the input stereoscopic\nimagery pair strips as they are collected by DigitalGlobe's constellation\nof polar-orbiting satellites. Strip DEM dimensions will vary according to\nthe satellite sensor that acquired the images and the off-nadir angle of\ncollection. Most strips are between 13 km and 17 km in width, and 110 km\nand 120 km in length.\n\n### Bands\n\n\n**Pixel Size**\n\n8 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------|-------|------------|-------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `elevation` | m | meters | Elevation |\n| `matchtag` | | meters | Bitmask raster indicating DEM pixels processing |\n| Bitmask for matchtag - Bit 0: Pixel processing - 0: Pixels have been interpolated - 1: Pixels are derived from a stereo match ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n### Terms of Use\n\n**Terms of Use**\n\nNational Science Foundation (PGC's primary funding source) policy requires\nresearchers to acknowledge NSF support in all publications, web pages, and\nmedia interviews.\n\nBy using PGC data in Earth Engine, users agree to cite PGC\nand its sponsorship by the NSF. The original source of any third-party data\nsupplied by PGC must also be properly attributed.\n\nFor more information see the PGC's\n[Acknowledgement Policy](https://www.pgc.umn.edu/guides/user-services/acknowledgement-policy/).\n\n### Citations\n\nCitations:\n\n- Howat, I. M., Porter, C., Smith, B. E., Noh, M.-J., and Morin, P.:\n The Reference Elevation Model of Antarctica, The Cryosphere, 13, 665-674, 2019.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5194/tc-13-665-2019\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 collection = ee.ImageCollection('UMN/PGC/REMA/V1/8m');\n\nMap.setCenter(-63.16, -75, 3);\n\nvar elevationVis = {\n bands: ['elevation'],\n min: -50.0,\n max: 1000.0,\n palette: ['0d13d8', '60e1ff', 'ffffff'],\n};\n\nMap.addLayer(collection, elevationVis, 'REMA_DEM_strips_8m');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/UMN/UMN_PGC_REMA_V1_8m) \n[REMA Strips 8m](/earth-engine/datasets/catalog/UMN_PGC_REMA_V1_8m) \nThe Reference Elevation Model of Antarctica (REMA) is a high resolution, time-stamped Digital Surface Model (DSM) of Antarctica at 2-meter and 8-meter spatial resolutions. Strip DEM files correspond to the overlapping area of the input stereoscopic imagery pair strips as they are collected by DigitalGlobe's constellation of polar-orbiting satellites. Strip ... \nUMN/PGC/REMA/V1/8m, dem,elevation-topography,geophysical,pgc,rema,umn \n2009-01-01T00:00:00Z/2018-01-01T00:00:00Z \n-88.3 -180 -53.8 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5194/tc-13-665-2019](https://doi.org/https://www.pgc.umn.edu/data/arcticdem/)\n- [https://doi.org/10.5194/tc-13-665-2019](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/UMN_PGC_REMA_V1_8m)"]]
