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Tracking Urban Change With Landsat

For helping communities across the United States stay up-to-date on their flood risk, the NASA/USGS Landsat satellites can take a bow. The Federal Emergency Management Agency uses Landsat images, which can illustrate urban changes, as a key indicator of sites where the agency should further investigate the flooding potential. With its archive of images capturing sprawling cities and new developments, Landsat can help FEMA track how building and construction is impacting an area's landscape

Earth-observing Landsat satellites have been capturing images of the planet's surface since 1972. Landsat 8 is the newest satellite in the program, a joint effort between NASA and the U.S. Geological Survey. It launched Feb. 11, 2013, and collects more than 400 images per day. New and archived Landsat data are available free to the public over the internet - and researchers have put the data to a multitude of uses. One is called the National Urban Change Indicator, or NUCI, created by MacDonald, Dettwiler, and Associates, LTD. It's the results from a process that mines Landsat images over a 27-year period to identify areas of "permanent change," where soil has been paved over for parking lots or other concrete structures.

NUCI results act as a red flag for FEMA, helping the agency focus its mapping efforts and budget. But if maps identify a high risk of floods for a certain community, residents can take action, including elevating houses, building flood barricades, and more.

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Another multimedia item related to this story:
     Georgia Urban Sprawl (id 4062)

Landsat data is used by MacDonald, Dettwiler, and Associates, LTD to make the National Urban Change Indicator, or NUCI. The process identifies areas of “permanent change,” where soil has been paved over for parking lots or other concrete structures. Areas of urban change indicate where flood risk maps might need to be updated.    Landsat data is used by MacDonald, Dettwiler, and Associates, LTD to make the National Urban Change Indicator, or NUCI. The process identifies areas of “permanent change,” where soil has been paved over for parking lots or other concrete structures. Areas of urban change indicate where flood risk maps might need to be updated.

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Duration: 3.2 minutes
Available formats:
  1280x720 (29.97 fps) QT         314 MB
  640x360 (29.97 fps) QT         83 MB
  960x540 (29.97 fps) MPEG-4   88 MB
  640x360 (29.97 fps) MPEG-4   35 MB
  320x240 (29.97 fps) MPEG-4   18 MB
  1280x720 (59.94 fps) QT         3 GB
  1280x720 (29.97 fps) WMV         105 MB
  720x480 (29.97 fps) WMV         87 MB
  960x540 (29.97 fps) WEBM         44 MB
  320x180     PNG           25 KB
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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?11506
Animation Number:11506
Completed:2014-03-13
Video Editor:Alison Schuyler Ogden (NASA/GSFC)
Interviewee:Zack Roehr (Dewberry)
Narrator:Alison Schuyler Ogden (NASA/GSFC)
Producers:Matthew R. Radcliff (USRA)
 Alison Schuyler Ogden (NASA/GSFC)
Scientist:James R. Irons (NASA/GSFC)
Project Support:Aaron E Lepsch (ADNET Systems, Inc.)
Writers:Alison Schuyler Ogden (NASA/GSFC)
 Kate Ramsayer (Telophase Corp.)
Series:Narrated Movies
 Landsat
 LDCM
Goddard TV Tape:G2012-118 -- FEMA Risk Maps
Please give credit for this item to:
NASA's Goddard Space Flight Center
 
Keywords:
SVS >> Flooding
SVS >> Floods
SVS >> HDTV
SVS >> Landsat
SVS >> Urban Growth
SVS >> Urban Sprawl
SVS >> Urbanization
SVS >> LDCM
GCMD >> Earth Science >> Human Dimensions >> Human Settlements >> Urban Areas
GCMD >> Earth Science >> Human Dimensions >> Social Behavior >> Disaster Response
 
 


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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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