Antarktika Referans Yükseklik Modeli (REMA), Antarktika'nın 2 metre ve 8 metre uzamsal çözünürlüklerdeki yüksek çözünürlüklü, zaman damgalı bir Dijital Yüzey Modelidir (DSM).
Şerit DEM dosyaları, DigitalGlobe'un kutup yörüngeli uydularından oluşan takımyıldızı tarafından toplanan giriş stereoskopik görüntü çifti şeritlerinin çakışan alanına karşılık gelir. Şerit DEM boyutları, görüntüleri elde eden uydu sensörüne ve toplama dışı nadir açısına göre değişir. Şeritlerin çoğu 13-17 km genişliğinde ve 110-120 km uzunluğundadır.
Bantlar
Piksel Boyutu 8 metre
Bantlar
Ad
Birimler
Piksel Boyutu
Açıklama
elevation
dk.
metre
Rakım
matchtag
metre
DEM piksellerinin işlendiğini gösteren bit maskeli raster
Matchtag için bit maskesi
Bit 0: Pixel işleme
0: Pikseller enterpolasyonla doldurulmuş
1: Pikseller, stereo eşleşmeden elde edilir.
Kullanım Şartları
Kullanım Şartları
National Science Foundation (PGC'nin birincil fon kaynağı) politikası, araştırmacıların tüm yayınlarda, web sayfalarında ve medya röportajlarında NSF desteğini belirtmelerini zorunlu kılar.
Kullanıcılar, Earth Engine'de PGC verilerini kullanarak PGC'yi ve NSF'nin sponsorluğunu alıntılamayı kabul eder. PGC tarafından sağlanan tüm üçüncü taraf verilerinin orijinal kaynağı da uygun şekilde belirtilmelidir.
Antarktika Referans Yükseklik Modeli (REMA), Antarktika'nın 2 metre ve 8 metre uzamsal çözünürlüklerdeki yüksek çözünürlüklü, zaman damgalı bir Dijital Yüzey Modelidir (DSM). Şerit DEM dosyaları, DigitalGlobe'un kutup yörüngeli uydularının topladığı giriş stereoskopik görüntü çifti şeritlerinin çakışan alanına karşılık gelir. Şerit …
[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)"]]
