www.iagt.org nasa lidar and the earthscope spatial data explorer fred pieper march 2006
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www.iagt.org
NASA LiDAR and the EarthScope NASA LiDAR and the EarthScope Spatial Data ExplorerSpatial Data Explorer
Fred Pieper
March 2006
www.iagt.org
NASA LiDAR/ALSMNASA LiDAR/ALSM
• NASA Contribution to EarthScope• Available to entire Geophysical Community• Areas Currently Available:
– San Andreas– Mt. Rainier– Mt. St. Helens– Darrington, WA
• Types of Products:– Bald Earth (DEM & Shaded Relief)– Highest Surface (DEM & Shaded Relief)– Potential for Others
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NASA LiDAR File CharacteristicsNASA LiDAR File Characteristics
• Imagery Assembled into Mosaics– based on USGS 7.5 minute quadrangle boundaries
– east-west strip covering north or south half of adjacent quadrangles
• DEMs at 6 foot Grid Spacing, 13 cm Vertical Accuracy• Shaded relief images
– Illumination Azimuth: 225 degrees
– Illumination Elevation: 60 degrees
– 3x3 kernel size
• GeoTIFF format: 5 – 150 MB• JPG Thumbnails• FGDC Metadata
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Example LiDAR ProductsExample LiDAR Products
Bald Earth DEM Highest Surface DEMBald Earth
Shaded Relief
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Accessing NASA LiDAR viaAccessing NASA LiDAR viaEarthScope Spatial Data ExplorerEarthScope Spatial Data Explorer
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ES SD-Explorer BackgroundES SD-Explorer Background
• Query, Browse, and Download Geospatial Observations
• Java application based on technology initially developed by NASA Code 935 (Applied Information Sciences Branch)
• Modified by IAGT to support various program initiatives including EarthScope
• Central Metadata Database (MySQL)
• Geospatial Observations can be in any data format
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Access via EarthScope SiteAccess via EarthScope Sitehttp://http://www.earthscope.org/data/explorer.phpwww.earthscope.org/data/explorer.php
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Application & Data Hosted by IAGTApplication & Data Hosted by IAGThttp://www.iagt.org/earthscope/es-sde.asphttp://www.iagt.org/earthscope/es-sde.asp
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Guest or Registered UsersGuest or Registered Users
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Batch Files for UNIX & WindowsBatch Files for UNIX & Windows
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EarthScope Spatial Data ExplorerEarthScope Spatial Data Explorer
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Login: Guest or Private CredentialsLogin: Guest or Private Credentials
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Ready to GoReady to Go
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Map InteractionMap Interaction
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Zoomed In with Grid OffZoomed In with Grid Off
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Observation Query FiltersObservation Query Filters
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Keyword FilterKeyword Filter
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Initial Limited Query ResultsInitial Limited Query Results
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Menu Settings: Query ResultsMenu Settings: Query Results
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Modified Query ResultsModified Query Results
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Adding a Geospatial Region FilterAdding a Geospatial Region Filter
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Query Results with Region FilterQuery Results with Region Filter
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Observation Extents on MapObservation Extents on Map
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Multiple SelectionsMultiple Selections
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Browse SelectionsBrowse Selections
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Download ObservationsDownload Observations
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Example Derivative ProductExample Derivative Product
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Example Derivative ProductExample Derivative Product
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Other NASA Data AvailableOther NASA Data Available
• Landsat• ASTER• SRTM
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Questions?Questions?
• http://www.earthscope.org/data/explorer.php• http://www.iagt.org/earthscope/es-sde.asp
• Poster
• Fred Pieper [email protected] 315-252-8669• Dave Harding [email protected] 301-614-
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