Shuttle radar topography mission is part of wikiproject geology, an attempt at creating a standardized, informative, comprehensive and easytouse geology resource. Download and clip a portion of the srtm 30m dem giving bounding box as wgs84 coordinates. Without the publication of aster gdem version 2, the task of filling the large srtm desert voids would have taken considerably longer. If its obviously not free data, then dont add it, please. Filling voids of srtm with landsat sensor imagery in rugged. Global srtm at 30m resolution center for earth observation. Unfortunately this data set contains significant gaps in the coverage. Loaded the following data into the regional arcsde 9. The main issue with gdem is artificial trash on the flat sands. Height data from these sites or data files in the same formats are supported.
Digital elevation data with srtm voids filled using accurate. There are three versions of the official srtm data. The global multiresolution terrain elevation data 2010 gmted2010 dataset contains elevation data for the globe collected from various sources. Breakline emphasis maintains the critical topographic features streams or ridges within the landscape by maintaining any minimum. Tests prove the increased effectiveness of dsf in filling srtm voids compared to. Distribution users are prohibited from any commercial, non free resale, or redistribution without explicit written permission from ciat. After this input dem was interpolated to 1arcsecond, it was used to fill the voids of the us srtm dem. This work aims at providing an interactive interface to download 30m resolution dem for any country.
Geological survey usgs developed using the best available data. Srtm data have been publicly available relatively soon after the data was processed. An overview of the different versions is given in figure 2 in the srtm user guide jplnasa version 1 srtm non void filled, unedited elevation data us. These data are only available at the usgs earth explorer site in one degree tiles.
This data is currently distributed free of charge by usgs and is available for download from the national map seamless data distribution system, or the usgs ftp site. Free world 3 arc second resolution 100m radio mobile download site 1. Void filled srtm plus released srtm nasa v3 nasa has released a void filled version of the shuttle radar topography mission digital elevation model, known as srtm plus or srtm nasa version 3. This data is currently distributed free of charge by usgs and is available for download. Elevation map of the philippines at 30 meter accuracy has.
Opendem the portal for sharing free digital elevation models and xyz height datasets download srtm data the data could be downloaded under the open database license. The data can be downloaded in the download srtm section under the open database license. You can use this function to add custom terrain data in site viewer and other rf propagation functions. It is the current dataset of choice for digital elevation model dem data since it has a fairly high resolution 1 arcsecond, or around 25 meters, has nearglobal coverage from 56s to 60n, and is in the public domain. Usgs earthexplorer hosts worldwide coverage of void filled data and provides open distribution of this highresolution global dataset.
An overview of the different versions is given in figure 2 in the srtm user guide. Usgs alasaka ned 2 at seamless data distribution system. First, the voidfilled dem fills in null values where it didnt meet. For the tiles listed below, the majority of srtm mountain nodata void areas have been filled. These voids were filled by a 33 matrix with the mean value zero values were ignored. Srtm water bodies home nc state university libraries. Jan 30, 2015 the joint srtmastergdem 3arcsecond based elevation map of the philippines solved the blanks issue and void filled the blanks of the initial srtm data using estimation via software algorithms. See a sample of these contours, converted to gif raster format. The shuttle radar topography mission srtm, see farr et al. The nasa shuttle radar topographic mission srtm has provided digital elevation data dems for over 80% of the globe. The provision of aster gdem version 2 by nasa and the japanese meti has helped to make this possible. Since november 2012 there is free and global coverage at 3 arc seconds available. The nasa shuttle radar topographic mission has provided digital elevation data dems for over 80% of the globe. The process was performed 3 times inn order to eliminate all voids.
Voids occur in regions were no data could be recorded by the srtm synthetic aperture radar system. Srtm shuttle radar topography mission gis geography. South america is now complete and can be downloaded via the world coverage table. Note that users are prohibited from any commercial, non free resale, or redistribution without explicit written permission from ciat.
The new srtm data are released at the version 3 processing level, which have been void filled. The reference data shown in table 2 collectively cover all aster gdem voids. You spend more time learning than you do programming. Generally, accuracy is quite good, but is not always up to srtm standard. Downloading 30meter srtm from the tile downloader site is as simple as pointing and. The lp daac would appreciate receiving an electronic copy of your publication via doi link and hearing about your work using data and tools from our website. In 2002 the nasa and usgs released a global data set of the earth surface geometry in 3 arc second 90m resolution obtained during a space shuttle mission in 2000. If you would like to participate, you can choose to edit this article, or visit the project page for more information. For an inventory of downloadable tiles with mountain voids filled using the above method, go to my main digital. Towards the end of 2014, nasa began to release newer, upgraded terrain data for regions outside of the usa that was higher in resolution and also void filled. Your input will help us stay informed about data use and may be highlighted as a use case of the data. Please feel free to contact us to tell us about your research. Space shuttle radar topography mission several srtm data versions and products are available. Explore the worlds largest civilian collection of images of the earths surface.
The main source is still srtm, but where srtm data are void or anomalous there is input from gdem, landsat and various topographic maps. Breakline emphasis maintains the critical topographic features streams or ridges within the landscape by maintaining any minimum elevation. Geschintroduction global land onekm base elevation globe model and other comparable 30arcsecondresolution global models, in 1996, the u. The version of the dataset available here is breakline emphasis, 7. The void filled srtm data from viewfinder panoramas are high quality at full srtm resolution. They will be posted in stages, with most of africa and a portion of southern europe available as of this writing. Srtm regional water body datasets, regional nonsrtm coverage datasets, and the regional datasets containing the polygons that represent the voids in the elevation data that are located in the waterland interface i. The shuttle radar topography mission is a collaborative project between nasa, the national imagery and mapping agency nima, and the german and italian space agencies to map the elevation of a large part of the globe. Importing shuttle radar topography mission srtm elevation data. Data for this version can be downloaded from this usgs directory page version 2. Shuttle radar topography mission srtm data products and non published srtm for canada source for northern canada and void filling. The srtm digital elevation data, produced by nasa originally, is a major. The shuttle radar topography mission is a collaborative project between nasa, the national imagery and mapping agency nima, and the german and italian space agencies to map the elevation of.
The joint srtmastergdem 3arcsecond based elevation map of the philippines solved the blanks issue and void filled the blanks of the initial srtm data using estimation via software algorithms. By cgiarcsi january 4, 2019 february 8, 2019 continue reading cgiar consortium for spatial information cgiarcsi is the geospatial science community of practice that facilitates cgiars use of geospatial data and analysis in research. Start this article has been rated as startclass on the projects quality scale. Usgs earth resources observation and science eros center archive spans from 1937 aerial photographs to millions of. The data sets he offers are in the same format and resolution as the srtm data so the same tools can be used for processing them. Your best place to download srtm tiles is through the usgs earth explorer. We are looking for any free terrain data for anywhere in the world. As with daps srtm us elevation 30m dataset, the new srtm grids are provided in geosoft grid format. The dem from srtm 1 arc second with filled up holes is available in clipped and unclipped format useful if you want to derive contour lines or larger area than switzerland. Srtm data, in hgt format, can be downloaded from here, but for some. Earn 10 reputation in order to answer this question.
Cgiarcsi corrected this problem with a void filling algorithm which established a void free dem, srtm v3. This page provides a summary of how i have filled the nodata voids in the dem data from the srtm, using contours derived from topographical maps. Dec 03, 2014 srtm data have been publicly available relatively soon after the data was processed. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data.
Download gratis data srtm indonesia untuk membuat peta kontur di garmin basecamp. Srtm dsm processing this howto explains how to derive a void free srtm dataset of the original srtm 2. Jplnasa version 1 srtm nonvoid filled, unedited elevation data us. Global multiresolution terrain elevation data 2010gmted2010by jeffrey j. This article presents a new technique for filling voids in srtm dem data. Areas with regions of no data in the original srtm data have been filled using interpolation methods described by reuter et al. Shuttle radar topography mission srtm data products. This data is currently distributed free of charge by usgs and is available for download from the national map seamless data. Nasa has released a voidfilled version of the shuttle radar. They affect all summits over 8,000 meters, most summits over 7,000 meters, many alpine and similar summits and ridges, and. Asking for help, clarification, or responding to other answers.
This code also gives you hillshade, elevation palette, and sea mask. Find satellite images and data, aerial photography, elevation and land cover datasets, digitized maps, and our image gallery collections. The collections are located under the digital elevation category below the srtm subcategory. Free world at 1 arc second resolution 30m radio mobile download site 1. Finally, void filled aster gdem2 tiles were clipped into 5.
We would like to show you a description here but the site wont allow us. All of these reference data are not anomaly free, but the initial aster gdem v3 was nearly void free except for greenland. Jarvis, 2007, an evaluation of void filling interpolation methods for srtm data, international journal of. Two resolutions of finished grade srtm data are available through earthexplorer from the collection held in the usgs eros archive. Linked coverage map of elevation data easy way to download collection of hgt files void filled. This srtm v3 product srtm plus is provided by nasa jpl at a resolution of 1 arcsecond approximately 30m. Srtm elevation data of the earths land surface are available with data points posted every 1 arc second for global coverage. The shuttle radar topography mission srtm delivered a free digital elevation model dem with a spatial resolution of 3 0 at near global coverage. Thanks for contributing an answer to geographic information systems stack exchange. During an 11day mission, space shuttle radar topography srtm mission. Shuttle radar topography mission srtm nonvoid filled usgs. Global multiresolution terrain elevation data 2010. Africa dem data for all of africa can be downloaded via the world coverage map. Shuttle radar topography mission 1arc second global.
Srtm plus uses srtm version 2 see below where the radar interferometric method was successful not void. Srtm digital elevation data 30m earth engine data catalog. Srtm void filling with spline interpolation in grass gis the elevation datasets are affected by mountain and desert nodata areas. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. Srtm 90m digital elevation database cgiar platform for. Hillshading basic hill shading inclusive version with combination of slope and oblique shading for use as overlay in a mapping client. Pdf filling voids of srtm with landsat sensor imagery in.
The srtm 1 arcsecond global data offer worldwide coverage of void filled data at a resolution of 1 arcsecond 30 meters and provide open distribution of this highresolution global data set. Data for this version can be downloaded from this usgs directory page. The new data are available for download from the usgs eros data center. Free synthetic aperture radar handbook available for download. These files have been processed to fill data voids and there is a. Shuttle radar topography mission srtm data products and non published srtm for canada source for northern canada and void. There is a srtm v4 version with gaps filled using the method described in reuter et al 2007. Digital elevation data with srtm voids filled using. The downloadable 3 arc second 1 x1 digital elevation models on this site are. Usgs earth resources observation and science eros center archive spans from 1937 aerial photographs to millions of satellite images of the earths surface, starting with the original earth orbits in the 1960s and first landsat satellite in 1972, to our current hourly additions of satellite images. Download 30meter srtm data easily with this point and click. Shuttle radar topography mission srtm data products and non published srtm for canada.
1233 248 208 730 1429 641 685 1195 1484 1493 1494 1467 960 265 1461 826 616 1246 1328 864 115 1319 479 1080 829 690 305 493 37 60 416 864 485 182 536