Avustralya'nın 5 metrelik ızgara dijital yükseklik modeli (DEM), LiDAR modelinden elde edilmiştir. Bu model, 2001 ile 2015 yılları arasında 245.000 kilometrekareyi aşan bir alanı kapsayan yaklaşık 236 ayrı LiDAR araştırmasından elde edilen ulusal 5 metrelik (çıplak arazi) DEM'yi temsil eder. Bu anketler Avustralya'nın nüfuslu kıyı bölgesini, Murray Darling Havzası'ndaki taşkın alanı anketlerini ve büyük ve küçük nüfus merkezlerinin ayrı ayrı anketlerini kapsar.
1 metre çözünürlüklü tüm LiDAR kaynaklı DEM'ler, her bir araştırma alanı için 5 metre çözünürlüklü veri kümeleri oluşturmak üzere komşu ortalaması yöntemi kullanılarak derlenip yeniden örneklenmiş ve ardından her bir eyalet için tek bir veri kümesinde birleştirilmiştir. Her eyaletin veri kümesi, resim koleksiyonunda ayrı bir resim olarak sağlanır.
Bireysel LiDAR araştırmalarının edinilmesi ve 5 m'lik ürünün türetilmesi; Ulusal Yükseklik Veri Çerçevesi ile Kıyı ve Kentsel DEM Programı kapsamında Geoscience Australia, Cooperative Research Centre for Spatial Information (CRCSI), İklim Değişikliği ve Çevre Bakanlıkları, eyalet ve bölge yargı alanları, yerel yönetim ve Murray Darling Basin Authority arasındaki uzun süreli işbirliğinin bir parçasıdır. Kaynak veri kümeleri, Avustralya ICSM LiDAR Edinme Spesifikasyonları ile genel olarak tutarlı olan standartlara göre yakalanmıştır. Bu spesifikasyonlar, en az 0,30 m (95% güven) temel dikey doğruluk ve en az 0,80 m (95% güven) yatay doğruluk gerektirir.
Perth'e yakın, (115.85, -31.99), (115.72, -33.75) ve (115.10, -33.43) civarında boş (NaN) değerlerin bulunduğu birkaç alan var.
Bantlar
Piksel Boyutu 5 metre
Bantlar
Ad
Birimler
Piksel Boyutu
Açıklama
elevation
dk.
metre
Rakım
Kullanım Şartları
Kullanım Şartları
Bu veri kümesi, Geoscience Australia tarafından Creative Commons Attribution 4.0 Uluslararası Lisansı kapsamında kullanıma sunulmuştur.
Veriler, sağlanan alıntı ve DOI ile referans verilmelidir.
Alıntılar
Alıntılar:
Geoscience Australia, 2015. Avustralya'nın LiDAR 5 Metre Izgarası'ndan elde edilen Dijital Yükseklik Modeli (DEM). Geoscience Australia, Canberra.
Avustralya'nın LiDAR modelinden elde edilen 5 metrelik ızgara dijital yükseklik modeli (DEM), 2001 ile 2015 yılları arasında 245.000 kilometrekareyi aşan bir alanı kapsayan yaklaşık 236 ayrı LiDAR araştırmasından elde edilen ulusal 5 metrelik (çıplak arazi) bir DEM'yi temsil eder. Bu anketler Avustralya'nın yerleşim yerlerini …
[null,null,[],[[["\u003cp\u003eThe dataset is a 5-meter resolution Digital Elevation Model (DEM) of Australia derived from LiDAR surveys between 2001 and 2015.\u003c/p\u003e\n"],["\u003cp\u003eIt covers over 245,000 square kilometers, primarily focusing on Australia's populated coastal zone, floodplains, and major population centers.\u003c/p\u003e\n"],["\u003cp\u003eThe DEM was created by compiling and resampling 1-meter resolution LiDAR-derived DEMs to a 5-meter resolution.\u003c/p\u003e\n"],["\u003cp\u003eData is made available by Geoscience Australia under the Creative Commons Attribution 4.0 International License and requires attribution with the provided citation and DOI.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes an elevation band representing the bare earth elevation in meters.\u003c/p\u003e\n"]]],["Geoscience Australia provides a 5-meter Digital Elevation Model (DEM) of Australia, derived from 236 LiDAR surveys conducted between 2001 and 2015. The dataset, available through Earth Engine, covers over 245,000 square kilometers, primarily Australia's populated coastal areas. It is provided as separate images for each state. Data, licensed under Creative Commons Attribution 4.0, is accessible through the Earth Engine snippet `ee.ImageCollection(\"AU/GA/AUSTRALIA_5M_DEM\")` and the dataset DOI. It also includes null value areas.\n"],null,["# Australian 5M DEM\n\nDataset Availability\n: 2015-12-01T00:00:00Z--2015-12-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [Geoscience Australia](https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/89644)\n\nTags\n:\n[australia](/earth-engine/datasets/tags/australia) [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [ga](/earth-engine/datasets/tags/ga) [geophysical](/earth-engine/datasets/tags/geophysical) [geoscience-australia](/earth-engine/datasets/tags/geoscience-australia) [lidar](/earth-engine/datasets/tags/lidar) \n\n#### Description\n\nThe Digital Elevation Model (DEM) 5 meter Grid of Australia\nderived from LiDAR model represents a National 5 meter (bare\nearth) DEM which has been derived from some 236 individual LiDAR\nsurveys between 2001 and 2015 covering an area in excess of 245,000\nsquare kilometers. These surveys cover Australia's populated\ncoastal zone; floodplain surveys within the Murray Darling Basin,\nand individual surveys of major and minor population centers.\nAll available 1 meter resolution LiDAR-derived DEMs have been\ncompiled and resampled using a neighborhood-mean method to 5\nmeter resolution datasets for each survey area, and then merged\ninto a single dataset for each State. Each state's dataset is\nprovided as a separate image within the image collection.\n\nThe acquisition of the individual LiDAR surveys and derivation\nof the 5m product has been part of a long-term collaboration\nbetween Geoscience Australia, the Cooperative Research Centre\nfor Spatial Information (CRCSI), the Departments of Climate Change\nand Environment, State and Territory jurisdictions, Local Government\nand the Murray Darling Basin Authority under the auspices of\nthe National Elevation Data Framework and Coastal and Urban DEM\nProgram. The source datasets have been captured to standards\nthat are generally consistent with the Australian ICSM LiDAR\nAcquisition Specifications with require a fundamental vertical\naccuracy of at least 0.30m (95% confidence) and horizontal accuracy\nof at least 0.80m (95% confidence).\n\nThere are several areas close to Perth with null (NaN) values around\n(115.85, -31.99), (115.72, -33.75), and (115.10, -33.43).\n\n### Bands\n\n\n**Pixel Size**\n\n5 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------|-------|------------|-------------|\n| `elevation` | m | meters | Elevation |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis dataset is made available by Geoscience Australia\nunder the Creative Commons Attribution 4.0 International License.\nThe data must be referenced with the provided citation and DOI.\n\n### Citations\n\nCitations:\n\n- Geoscience Australia, 2015. Digital Elevation Model (DEM) of Australia\n derived from LiDAR 5 Metre Grid. Geoscience Australia, Canberra.\n\n### DOIs\n\n- \u003chttps://doi.org/10.4225/25/5652419862E23\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.ImageCollection('AU/GA/AUSTRALIA_5M_DEM');\nvar elevation = dataset.select('elevation');\nvar elevationVis = {\n min: 0.0,\n max: 150.0,\n palette: ['0000ff', '00ffff', 'ffff00', 'ff0000', 'ffffff'],\n};\nMap.setCenter(140.1883, -35.9113, 8);\nMap.addLayer(elevation, elevationVis, 'Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/AU/AU_GA_AUSTRALIA_5M_DEM) \n[Australian 5M DEM](/earth-engine/datasets/catalog/AU_GA_AUSTRALIA_5M_DEM) \nThe Digital Elevation Model (DEM) 5 meter Grid of Australia derived from LiDAR model represents a National 5 meter (bare earth) DEM which has been derived from some 236 individual LiDAR surveys between 2001 and 2015 covering an area in excess of 245,000 square kilometers. These surveys cover Australia's populated ... \nAU/GA/AUSTRALIA_5M_DEM, australia,dem,elevation,elevation-topography,ga,geophysical,geoscience-australia,lidar \n2015-12-01T00:00:00Z/2015-12-01T00:00:00Z \n-43.45 114.09 -9.88 153.64 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.4225/25/5652419862E23](https://doi.org/https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/89644)\n- [https://doi.org/10.4225/25/5652419862E23](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/AU_GA_AUSTRALIA_5M_DEM)"]]
