NASA LiDAR and the EarthScope Spatial Data Explorer

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NASA LiDAR and the EarthScope Spatial Data
Explorer

• Fred Pieper
• March 2006

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NASA 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 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 Products
Bald Earth Shaded Relief

• Highest Surface DEM

Bald Earth DEM
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Accessing NASA LiDAR viaEarthScope Spatial Data
Explorer
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ES 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 Sitehttp//www.earthscope.o
rg/data/explorer.php
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Application Data Hosted by IAGThttp//www.iagt.
org/earthscope/es-sde.asp
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Guest or Registered Users
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Batch Files for UNIX Windows
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EarthScope Spatial Data Explorer
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Login Guest or Private Credentials
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Ready to Go
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Map Interaction
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Zoomed In with Grid Off
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Observation Query Filters
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Keyword Filter
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Initial Limited Query Results
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Menu Settings Query Results
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Modified Query Results
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Adding a Geospatial Region Filter
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Query Results with Region Filter
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Observation Extents on Map
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Multiple Selections
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Browse Selections
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Download Observations
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Example Derivative Product
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Example Derivative Product
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Other NASA Data Available

• Landsat
• ASTER
• SRTM

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Questions?

• http//www.earthscope.org/data/explorer.php
• http//www.iagt.org/earthscope/es-sde.asp
• Poster
• Fred Pieper fpieper_at_iagt.org 315-252-8669
• Dave Harding David.J.Harding_at_nasa.gov
  301-614-6503