The nasa shuttle radar topographic mission srtm has provided digital elevation data dems for over 80% of the globe. We are looking for any free terrain data for anywhere in the world. Geological survey usgs developed using the best available data. 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. Digital elevation data with srtm voids filled using. 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 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.
Since november 2012 there is free and global coverage at 3 arc seconds available. 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. 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. This code also gives you hillshade, elevation palette, and sea mask.
Please feel free to contact us to tell us about your research. Shuttle radar topography mission srtm data products. The main source is still srtm, but where srtm data are void or anomalous there is input from gdem, landsat and various topographic maps. Shuttle radar topography mission srtm data products and non published srtm for canada source for northern canada and void. Usgs earth resources observation and science eros center archive spans from 1937 aerial photographs to millions of. 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. The new data are available for download from the usgs eros data center. Free world 3 arc second resolution 100m radio mobile download site 1.
During an 11day mission, space shuttle radar topography srtm mission. Pdf filling voids of srtm with landsat sensor imagery in. Cgiarcsi corrected this problem with a void filling algorithm which established a void free dem, srtm v3. Srtm digital elevation data 30m earth engine data catalog. This article presents a new technique for filling voids in srtm dem data. Srtm water bodies home nc state university libraries. Breakline emphasis maintains the critical topographic features streams or ridges within the landscape by maintaining any minimum. 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. For the tiles listed below, the majority of srtm mountain nodata void areas have been filled.
Data for this version can be downloaded from this usgs directory page. This srtm v3 product srtm plus is provided by nasa jpl at a resolution of 1 arcsecond approximately 30m. Download gratis data srtm indonesia untuk membuat peta kontur di garmin basecamp. 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. Linked coverage map of elevation data easy way to download collection of hgt files void filled. Distribution users are prohibited from any commercial, non free resale, or redistribution without explicit written permission from ciat. If its obviously not free data, then dont add it, please. Find satellite images and data, aerial photography, elevation and land cover datasets, digitized maps, and our image gallery collections.
South america is now complete and can be downloaded via the world coverage table. 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. 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. The reference data shown in table 2 collectively cover all aster gdem voids. 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. Your best place to download srtm tiles is through the usgs earth explorer. These data are only available at the usgs earth explorer site in one degree tiles. Srtm data, in hgt format, can be downloaded from here, but for some. Downloading 30meter srtm from the tile downloader site is as simple as pointing and. They affect all summits over 8,000 meters, most summits over 7,000 meters, many alpine and similar summits and ridges, and. Global multiresolution terrain elevation data 2010gmted2010by jeffrey j. Global multiresolution terrain elevation data 2010. 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. 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.
First, the voidfilled dem fills in null values where it didnt meet. They will be posted in stages, with most of africa and a portion of southern europe available as of this writing. All of these reference data are not anomaly free, but the initial aster gdem v3 was nearly void free except for greenland. There are three versions of the official srtm data. Finally, void filled aster gdem2 tiles were clipped into 5. Hillshading basic hill shading inclusive version with combination of slope and oblique shading for use as overlay in a mapping client. Elevation map of the philippines at 30 meter accuracy has. Srtm 90m digital elevation database cgiar platform for big.
Start this article has been rated as startclass on the projects quality scale. Areas with regions of no data in the original srtm data have been filled using interpolation methods described by reuter et al. Breakline emphasis maintains the critical topographic features streams or ridges within the landscape by maintaining any minimum elevation. Srtm data have been publicly available relatively soon after the data was processed. Free world at 1 arc second resolution 30m radio mobile download site 1. The new srtm data are released at the version 3 processing level, which have been void filled. This data is currently distributed free of charge by usgs and is available for download. Without the publication of aster gdem version 2, the task of filling the large srtm desert voids would have taken considerably longer. The shuttle radar topography mission srtm delivered a free digital elevation model dem with a spatial resolution of 3 0 at near global coverage. You can use this function to add custom terrain data in site viewer and other rf propagation functions. 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. Geschintroduction global land onekm base elevation globe model and other comparable 30arcsecondresolution global models, in 1996, the u. Explore the worlds largest civilian collection of images of the earths surface. Unfortunately this data set contains significant gaps in the coverage.
Jplnasa version 1 srtm nonvoid filled, unedited elevation data us. 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. Height data from these sites or data files in the same formats are supported. Two resolutions of finished grade srtm data are available through earthexplorer from the collection held in the usgs eros archive. Digital elevation data with srtm voids filled using accurate. Tests prove the increased effectiveness of dsf in filling srtm voids compared to. You spend more time learning than you do programming.
The provision of aster gdem version 2 by nasa and the japanese meti has helped to make this possible. 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. 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. Africa dem data for all of africa can be downloaded via the world coverage map. 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. Usgs earthexplorer hosts worldwide coverage of void filled data and provides open distribution of this highresolution global dataset. Dec 03, 2014 srtm data have been publicly available relatively soon after the data was processed. Note that users are prohibited from any commercial, non free resale, or redistribution without explicit written permission from ciat. The collections are located under the digital elevation category below the srtm subcategory. Srtm 90m digital elevation database cgiar platform for.
Your input will help us stay informed about data use and may be highlighted as a use case of the data. Global srtm at 30m resolution center for earth observation. Srtm dsm processing this howto explains how to derive a void free srtm dataset of the original srtm 2. 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. The version of the dataset available here is breakline emphasis, 7. We would like to show you a description here but the site wont allow us. Filling voids of srtm with landsat sensor imagery in rugged. The main issue with gdem is artificial trash on the flat sands. 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. The shuttle radar topography mission srtm, see farr et al. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. Shuttle radar topography mission srtm data products and non published srtm for canada source for northern canada and void filling. Earn 10 reputation in order to answer this question. After this input dem was interpolated to 1arcsecond, it was used to fill the voids of the us srtm dem.
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 plus uses srtm version 2 see below where the radar interferometric method was successful not void. The srtm digital elevation data, produced by nasa originally, is a major. 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 files have been processed to fill data voids and there is a. There is a srtm v4 version with gaps filled using the method described in reuter et al 2007. These voids were filled by a 33 matrix with the mean value zero values were ignored. For an inventory of downloadable tiles with mountain voids filled using the above method, go to my main digital. Generally, accuracy is quite good, but is not always up to srtm standard. Srtm void filling with spline interpolation in grass gis the elevation datasets are affected by mountain and desert nodata areas. The downloadable 3 arc second 1 x1 digital elevation models on this site are. Importing shuttle radar topography mission srtm elevation data. Loaded the following data into the regional arcsde 9. Voids occur in regions were no data could be recorded by the srtm synthetic aperture radar system.
This work aims at providing an interactive interface to download 30m resolution dem for any country. Srtm shuttle radar topography mission gis geography. The process was performed 3 times inn order to eliminate all voids. Jarvis, 2007, an evaluation of void filling interpolation methods for srtm data, international journal of. Free synthetic aperture radar handbook available for download. The data can be downloaded in the download srtm section under the open database license. This data is currently distributed free of charge by usgs and is available for download from the national map seamless data. See a sample of these contours, converted to gif raster format. The void filled srtm data from viewfinder panoramas are high quality at full srtm resolution. Nasa has released a voidfilled version of the shuttle radar. Download 30meter srtm data easily with this point and click. If you would like to participate, you can choose to edit this article, or visit the project page for more information. Shuttle radar topography mission srtm nonvoid filled usgs.
Shuttle radar topography mission srtm data products and non published srtm for canada. The nasa shuttle radar topographic mission has provided digital elevation data dems for over 80% of the globe. Asking for help, clarification, or responding to other answers. Thanks for contributing an answer to geographic information systems stack exchange.
Space shuttle radar topography mission several srtm data versions and products are available. As with daps srtm us elevation 30m dataset, the new srtm grids are provided in geosoft grid format. The global multiresolution terrain elevation data 2010 gmted2010 dataset contains elevation data for the globe collected from various sources. 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.
596 1511 753 1139 1098 500 1501 642 1244 24 1510 1137 1561 540 911 596 1594 1142 1280 1162 595 1334 886 482 457 655 284 1154 328 986 1085 1256 582 685