Model Ketinggian Digital (DEM) Grid 5 meter Australia yang berasal dari model LiDAR merepresentasikan DEM 5 meter Nasional (tanah kosong) yang berasal dari sekitar 236 survei LiDAR individual antara tahun 2001 dan 2015 yang mencakup area seluas lebih dari 245.000 kilometer persegi. Survei ini mencakup zona pesisir Australia yang berpenghuni; survei dataran banjir di dalam Murray Darling Basin, dan survei individu di pusat populasi besar dan kecil.
Semua DEM yang berasal dari LiDAR dengan resolusi 1 meter yang tersedia telah dikompilasi dan di-sampling ulang menggunakan metode rata-rata tetangga ke set data resolusi 5 meter untuk setiap area survei, lalu digabungkan menjadi satu set data untuk setiap Negara Bagian. Setiap set data negara bagian disediakan sebagai gambar terpisah dalam kumpulan gambar.
Akuisisi survei LiDAR individu dan turunan produk 5 m telah menjadi bagian dari kolaborasi jangka panjang antara Geoscience Australia, Cooperative Research Centre for Spatial Information (CRCSI), Departemen Perubahan Iklim dan Lingkungan, yurisdiksi Negara Bagian dan Wilayah, Pemerintah Daerah, dan Murray Darling Basin Authority di bawah naungan National Elevation Data Framework dan Program DEM Pesisir dan Perkotaan. Kumpulan data sumber telah direkam sesuai standar yang umumnya konsisten dengan Spesifikasi Akuisisi LiDAR ICSM Australia yang memerlukan akurasi vertikal mendasar minimal 0,30 m (keyakinan 95%) dan akurasi horizontal minimal 0,80 m (keyakinan 95%).
Ada beberapa area di dekat Perth dengan nilai nol (NaN) di sekitar
(115.85, -31.99), (115.72, -33.75), dan (115.10, -33.43).
Band
Ukuran Piksel 5 meter
Band
Nama
Unit
Ukuran Piksel
Deskripsi
elevation
m
meter
Elevasi
Persyaratan Penggunaan
Persyaratan Penggunaan
Set data ini disediakan oleh Geoscience Australia berdasarkan Lisensi Internasional Creative Commons Attribution 4.0.
Data harus dirujuk dengan kutipan dan DOI yang diberikan.
Kutipan
Kutipan:
Geoscience Australia, 2015. Model Elevasi Digital (DEM) Australia
yang berasal dari Grid 5 Meter LiDAR. Geoscience Australia, Canberra.
Model Grid Ketinggian Digital (DEM) 5 meter Australia yang berasal dari model LiDAR merepresentasikan DEM 5 meter Nasional (tanah kosong) yang berasal dari sekitar 236 survei LiDAR individual antara tahun 2001 dan 2015 yang mencakup area seluas lebih dari 245.000 kilometer persegi. Survei ini mencakup wilayah berpenghuni di Australia …
[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)"]]
