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Life Histories from Landsat: 25 Years in the Pacific Northwest Forest

This visualization shows a sequence of Landsat-based data in the Pacific Northwest. There is one data set for each year representing an aggregate of the approximate peak of the growing season (around August). The data was created using a sophisticated algorithm called LandTrendr. LandTrendr analyzes 'stacks' of Landsat scenes, looking for statistical trends in the data and filtering out noise. The algorithm evaluated data from more than 1,800 Landsat Thematic Mapper images, nearly 1 Terabyte of raw imagery, to define the life histories of each of more than 336 million pixels on the landscape. The resulting trends identify periods of stability and change that are displayed as colors.

In these false color images, the colors represent types of land; for example, blue areas are forests; orange/yellow areas are agriculture; and, purple areas are urban. Each 'stack' is representative of a Landsat scene. There are 22 stacks stitched together to cover most of the U.S. Pacific Northwest. This processed data is used for science, natural resource management, and education.

The visualization zooms into the Portland area showing different types of land such as agricultural, urban, and forests. We move south to a region that was evergreen forest for a number of years (blue), then was clear cut in 1999 (orange), then began to regrow (yellow). A graph shows the trajectories for a particular location in the clearcut as the years repeat. The dots represent the original data from Landsat; and, the line represents LandTrendr analysis. We move over to the Three Sisters region to show an area of pine forest that becomes infested with bark beetles in 2004. Next, we move to the southern foothills of Mount Hood where a budworm infestation is in progress; around 1991, the worms move on to another area and shrubs start to regrow. Next we

move to the east side of Mount Rainier National Park to see another budworm outbreak followed by shrub regrowth. Finally, we move to the west of Mount Rainier where we can see widespread clear cutting outside of the park, but no clear cutting inside the protected park land.


Don't miss this related tour of the region



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Narrated video of LandTrendr analysis of the Pacific Northwest, using data from Robert Kennedy (Boston University) using Landsat satellites. Visualized by Greg Shirah of NASA Goddard Scientific Visualization Studio.    Narrated video of LandTrendr analysis of the Pacific Northwest, using data from Robert Kennedy (Boston University) using Landsat satellites. Visualized by Greg Shirah of NASA Goddard Scientific Visualization Studio.

For complete transcript, click here.
Duration: 3.7 minutes
Available formats:
  1280x720 (29.97 fps) QT         132 MB
  640x360 (29.97 fps) QT         101 MB
  960x540 (29.97 fps) MPEG-4   105 MB
  640x360 (29.97 fps) MPEG-4   42 MB
  320x240 (29.97 fps) MPEG-4   22 MB
  1280x720 (29.97 fps) WMV         122 MB
  720x480 (29.97 fps) WMV         114 MB
  1280x720 (59.94 fps) QT         3 GB
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LandTrendr analysis of the Pacific Northwest. No audio.    LandTrendr analysis of the Pacific Northwest. No audio.
Duration: 3.3 minutes
Available formats:
  1920x1080 (30 fps) MPEG-4   695 MB
  1280x720 (30 fps) MPEG-4   455 MB
  1920x1080 (60 fps) MPEG-4   941 MB
  640x360 (30 fps) MPEG-4   35 MB
  1280x720 (59.94 fps) QT         3 GB
  1920x1080 (60 fps) Frames
  1920x1080 JPEG         652 KB
  320x180     PNG           132 KB
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LandTrendr analysis of the Pacific Northwest. No audio and no graphs.    LandTrendr analysis of the Pacific Northwest. No audio and no graphs.
Duration: 3.3 minutes
Available formats:
  1920x1080 MPEG-4   589 MB
  640x360     MPEG-4   35 MB
  1920x1080 Frames
  1920x1080 JPEG         624 KB
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Frames for 5x3 or 3x3 hyperwall    Frames for 5x3 or 3x3 hyperwall

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Print resolution still over Portland    Print resolution still over Portland

Available formats:
  7680 x 4320     TIFF     75 MB


Print resolution still showing shrub regrowth after a clear cut    Print resolution still showing shrub regrowth after a clear cut

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  7680 x 4320     TIFF     39 MB


Print resolution still showing a bark beetle infestation near the Three Sisters    Print resolution still showing a bark beetle infestation near the Three Sisters

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  7680 x 4320     TIFF     41 MB


Print resolution still showing shrub regorwth after a budworm infestation near Mount Hood    Print resolution still showing shrub regorwth after a budworm infestation near Mount Hood

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  7680 x 4320     TIFF     48 MB


Print resolution still showing shrub regrowth after a budworm infestation east of Mount Rainier    Print resolution still showing shrub regrowth after a budworm infestation east of Mount Rainier

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  7680 x 4320     TIFF     60 MB


Print resolution still comparing clear cutting on private land versus protected park land    Print resolution still comparing clear cutting on private land versus protected park land

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  7680 x 4320     TIFF     67 MB


Print resolution still showing the exent of the data set used in these visualizations covering about 2/3 of Washington and Oregon    Print resolution still showing the exent of the data set used in these visualizations covering about 2/3 of Washington and Oregon

Available formats:
  7680 x 4320     TIFF     50 MB


Print resolution still of North America with LandTrendr data    Print resolution still of North America with LandTrendr data

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  7680 x 4320     TIFF     37 MB


Print resolution still of North America without LandTrendr data    Print resolution still of North America without LandTrendr data

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  7680 x 4320     TIFF     36 MB



Color legend
   Color legend

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  1336 x 627       PNG       26 KB

Short URL to This Page:http://svs.gsfc.nasa.gov/goto?4013
Animation Number:4013
Completed:2013-01-04
Animators:Greg Shirah (NASA/GSFC) (Lead)
 Alex Kekesi (GST)
 Horace Mitchell (NASA/GSFC)
Producer:Matthew R. Radcliff (USRA)
Scientists:Robert Kennedy (Boston University)
 Zhiqiang Yang (Oregon State University)
 Justin Braaten (Oregon State University)
Writer:Ellen T Gray (ADNET Systems, Inc.)
Platforms/Sensors/Data Sets:LandTrendr None
 Terra and Aqua/MODIS/Blue Marble: Next Generation
 SRTM/SIR-C/DEM
 Landsat (1984 through 2011)
Series:Geophysical Changes Over Time
 Narrated Movies
 Landsat
 LDCM
Please give credit for this item to:
NASA's Goddard Space Flight Center Scientific Visualization Studio and the Laboratory for Applications of Remote Sensing in Ecology at Oregon State University
 
Keywords:
SVS >> HDTV
SVS >> Land Classification
SVS >> Landsat
DLESE >> Physical geography
GCMD >> Earth Science >> Land Surface
GCMD >> Earth Science >> Land Surface >> Land Use/Land Cover
DEPC Metadata is available here.
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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