Bu, 3D Yükseklik Programı'ndan (3DEP) alınan, 1 m piksel boyutuna sahip, döşenmiş bir görüntü koleksiyonudur. 3DEP veri stokları, Ulusal Harita'nın yükseklik katmanı olarak hizmet verir ve Amerika Birleşik Devletleri'ndeki yer bilimleri çalışmaları ve harita uygulamaları için temel yükseklik bilgileri sağlar.
Bu DEM'deki yükseklikler, topoğrafik çıplak toprak yüzeyini temsil eder.
USGS standardı 1 m piksel boyutlu DEM'ler yalnızca 1 m piksel boyutlu veya daha yüksek çözünürlüklü görüntülerin yüksek çözünürlüklü ışık algılama ve mesafe ölçme (lidar) kaynak verilerinden üretilir. 1 m piksel boyutlu DEM yüzeyleri, koleksiyon projelerinde sorunsuz bir şekilde birleştirilir ancak projeler arasında sorunsuz bir şekilde birleştirilmeyebilir.
ABD'nin bitişik bölgelerinde (CONUS) 1 m piksel boyutlu DEM'in döşemeleri için kullanılan uzamsal referans, metre birimlerinde ve 1983 Kuzey Amerika Datum'u (NAD83) ile uyumlu olan Evrensel Enine Mercator (UTM) sistemidir. Tüm çıplak arazi yükseklik değerleri metre cinsindendir ve 1988 Kuzey Amerika Dikey Datum'una (NAVD88) göre referans alınır. Her döşeme, bulunduğu UTM bölgesinde dağıtılır. Bir döşeme iki UTM bölgesini kesişiyorsa her iki bölgede de yayınlanır.
Bu ve diğer görüntü çakışması durumlarında, aynı alanı kapsayan farklı görüntülerde yükseklik değerleri biraz farklı olabilir.
1 m piksel boyutlu DEM, 3DEP ürün paketinde sunulan en yüksek çözünürlüklü standart DEM'dir. 10 m 3DEP veri kümesi USGS_3DEP_10m adresinde mevcuttur.
Bu, 3D Yükseklik Programı'ndan (3DEP) alınan 1 m piksel boyutlu, döşenmiş bir görüntü koleksiyonudur. 3DEP veri stokları, Ulusal Harita'nın yükseklik katmanı olarak hizmet verir ve Amerika Birleşik Devletleri'ndeki yer bilimleri çalışmaları ve harita uygulamaları için temel yükseklik bilgileri sağlar. Bu … yükseklikleri
[null,null,[],[[["\u003cp\u003eThe USGS 3DEP 1m dataset provides elevation data for the United States with 1-meter resolution.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is primarily derived from high-resolution LiDAR data and represents bare-earth topography.\u003c/p\u003e\n"],["\u003cp\u003eElevation values are referenced to NAVD88 and the dataset is available as a tiled image collection in Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eWhile seamless within projects, tiles may have slight elevation differences where they overlap.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for research, education, and non-profit use through the USGS and Earth Engine.\u003c/p\u003e\n"]]],["The USGS 3DEP 1m dataset provides 1-meter resolution elevation data for the United States, from 2006 to 2015. Data is sourced from high-resolution lidar and is accessible via the Earth Engine using the `ee.ImageCollection(\"USGS/3DEP/1m\")` snippet. The dataset's elevations represent bare-earth surfaces referenced to the NAVD88 vertical datum, and the dataset is seamless within collection projects. Tiles use UTM projection and are available in overlapping zones. Public domain use is permitted with USGS acknowledgment.\n"],null,["# USGS 3DEP 1m National Map\n\nDataset Availability\n: 2015-01-01T00:00:00Z--2006-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [United States Geological Survey](https://www.sciencebase.gov/catalog/item/543e6b86e4b0fd76af69cf4c)\n\nTags\n:\n[3dep](/earth-engine/datasets/tags/3dep) [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [geophysical](/earth-engine/datasets/tags/geophysical) [topography](/earth-engine/datasets/tags/topography) [usgs](/earth-engine/datasets/tags/usgs) \n\n#### Description\n\nThis is a tiled collection of images with 1m pixel size from the 3D\nElevation Program (3DEP). The 3DEP data holdings serve as the elevation\nlayer of The National Map and provide foundational elevation information for\nearth science studies and mapping applications in the United States.\n\nThe elevations in this DEM represent the topographic bare-earth surface.\nUSGS standard 1m pixel size DEMs are produced exclusively from high\nresolution light detection and ranging (lidar) source data of images with 1m\npixel size or higher resolution. 1m pixel size DEM surfaces are seamless\nwithin collection projects but not necessarily seamless across projects.\nThe spatial reference used for tiles of the 1m pixel size DEM within the\nconterminous United States (CONUS) is Universal Transverse Mercator (UTM) in\nunits of meters and in conformance with the North American Datum of 1983\n(NAD83). All bare earth elevation values are in meters and are referenced to\nthe North American Vertical Datum of 1988 (NAVD88). Each tile is distributed\nin the UTM Zone in which it lies. If a tile crosses two UTM zones, it is\ndelivered in both zones.\nIn this and other cases of image overlaps, elevation values might be\nslightly different in different images covering the same area.\n\nThe 1m pixel size DEM is the highest resolution standard DEM offered in the\n3DEP product suite. The 10m 3DEP dataset is available at\n[USGS_3DEP_10m](/earth-engine/datasets/catalog/USGS_3DEP_10m).\n\n### Bands\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------|-------|------------|--------------------|\n| `elevation` | m | 1 meters | Elevation (NAVD88) |\n\n### Terms of Use\n\n**Terms of Use**\n\nMost U.S. Geological Survey (USGS) information resides\nin the public domain and may be used without restriction. Additional\ninformation on [Acknowledging or Crediting USGS as Information\nSource](https://www.usgs.gov/information-policies-and-instructions/crediting-usgs)\nis available.\n\n### Citations\n\nCitations:\n\n- U.S. Geological Survey, 3D Elevation Program 1-Meter Resolution Digital\n Elevation Model.\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.ImageCollection('USGS/3DEP/1m');\nvar visualization = {\n min: 0,\n max: 3000,\n palette: [\n '3ae237', 'b5e22e', 'd6e21f', 'fff705', 'ffd611', 'ffb613', 'ff8b13',\n 'ff6e08', 'ff500d', 'ff0000', 'de0101', 'c21301', '0602ff', '235cb1',\n '307ef3', '269db1', '30c8e2', '32d3ef', '3be285', '3ff38f', '86e26f'\n ],\n};\nMap.setCenter(-119.0, 34.6, 10);\nMap.addLayer(dataset, visualization, 'elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/USGS/USGS_3DEP_1m) \n[USGS 3DEP 1m National Map](/earth-engine/datasets/catalog/USGS_3DEP_1m) \nThis is a tiled collection of images with 1m pixel size from the 3D Elevation Program (3DEP). The 3DEP data holdings serve as the elevation layer of The National Map and provide foundational elevation information for earth science studies and mapping applications in the United States. The elevations in this ... \nUSGS/3DEP/1m, 3dep,dem,elevation,elevation-topography,geophysical,topography,usgs \n2015-01-01T00:00:00Z/2006-01-01T00:00:00Z \n-16.6 -171 76.9 164 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.sciencebase.gov/catalog/item/543e6b86e4b0fd76af69cf4c)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/USGS_3DEP_1m)"]]
