Earth  ID: 30009

Landsat: 25 Years of Land-Use Change near Portland, Oregon

This animation shows land-use changes over 25 years around the area of Portland, Oregon, United States, and Mt. St. Helens in Washington state.

In this visualization, north is to the right and west is up. The city of Portland, Oregon can just be seen on the left edge of the image, while Mt. St. Helens shows up as a large red/purple area in the middle right.

Areas of vegetation are shown in blues, greens and yellows while areas lacking vegetation are shown in reds, oranges, and browns. As the animation cycles through the years 1984-2008, the harvest and regrowth cycle of commercial forestry operations can be seen, along with gradual re-vegetation of areas destroyed by the 1980 volcanic eruption of Mt. St. Helens.


Leann Johnson (Global Science and Technology, Inc.): Project Support
Jeffrey Masek (NASA/GSFC): Lead Scientist
Eric Sokolowsky (GST): Project Support
Robert Kennedy (Boston University): Lead Animator
Please give credit for this item to:
NASA/Goddard Space Flight Center

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Data Used:
also referred to as: LandTrendr
Analysis - Oregon State University
The Landsat satellites have witnessed decades of change on the Earth's surface. Algorithms in LandTrendr
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:

SVS >> Land Classification
SVS >> Landsat
SVS >> Land use
SVS >> Mt. St. Helens
SVS >> Portland
GCMD >> Earth Science >> Biosphere >> Terrestrial Ecosystems >> Forests
GCMD >> Earth Science >> Land Surface >> Land Use/Land Cover >> Land Cover
SVS >> Hyperwall
NASA Science >> Earth

GCMD 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