Skip all navigation and jump to content Jump to site navigation Jump to section navigation.
NASA Logo - Goddard Space Flight Center + Visit NASA.gov
HOME PROJECTS RESOURCES SEARCH MAP

+ Advanced Search
Home
Home
View Most Recently Released Imagery
View Gallery of Imagery: A topical collection of SVS Imagery
Search Imagery by the keywords assigned to it
Search Imagery by the instruments that supplied data for a visualization product
Search Imagery by the series of visualizations that have been produced
Search Imagery by the scientist providing the data used in a visualization product
Search Imagery by the animator that created the product
Search Imagery by the identification number assigned to the visualization product
See other search options





  + RSS Feeds
  + Podcasts
blank image
Previous Animation Number   Next Animation Number
Mississippi Dead Zone

Recent reports indicate that the large region of low oxygen water often referred to as the 'Dead Zone' has spread across nearly 5,800 square miles of the Gulf of Mexico again in what appears to be an annual event. NASA satellites monitor the health of the oceans and spots the conditions that lead to a dead zone. These images show how ocean color changes from winter to summer in the Gulf of Mexico. Summertime satellite observations of ocean color from MODIS Aqua show highly turbid waters which may include large blooms of phytoplankton extending from the mouth of the Mississippi River all the way to the Texas coast. When these blooms die and sink to the bottom, bacterial decomposition strips oxygen from the surrounding water, creating an environment very difficult for marine life to survive in. Reds and oranges represent high concentrations of phytoplankton and river sediment. The National Oceanic and Atmospheric Administration (NOAA) ships measured low oxygen water in the same location as the highly turbid water in the satellite images. Most studies indicate that fertilizers and runoff from human sources is one of the major stresses impacting coastal ecosystems. In the third image using NOAA data, reds and oranges represent low oxygen concentrations. For additional information, see: http://www.gsfc.nasa.gov/topstory/2004/0810deadzone.html
Share: Share via E-mail E-mail   Share on TwitterTwitter
More information on this topic available at:
http://www.gsfc.nasa.gov/topstory/2004/0810deadzone.html

Animation showing winter phytoplankton conditions followed by summer conditions, then by NOAA's oxygen data    Animation showing winter phytoplankton conditions followed by summer conditions, then by NOAA's oxygen data
Duration: 13.0 seconds
Available formats:
  720x486     Frames
  640x480     MPEG-1   6 MB
  720x480     MPEG-2   11 MB
  320x240     MPEG-1   1 MB
  320x240     X-FLV       601 KB
  640x480     MPEG       2 MB
How to play our movies


NOAA oxygen water data along the Gulf Coast    NOAA oxygen water data along the Gulf Coast

Available formats:
  2560 x 1920     TIFF     10 MB
  320 x 180         PNG       75 KB


Summer phytoplankton conditions along the Gulf Coast    Summer phytoplankton conditions along the Gulf Coast

Available formats:
  2560 x 1920     TIFF     13 MB


Winter phytoplankton conditions along the Gulf Coast    Winter phytoplankton conditions along the Gulf Coast

Available formats:
  2560 x 1920     TIFF     12 MB

Short URL to This Page:http://svs.gsfc.nasa.gov/goto?2979
Animation Number:2979
Completed:2004-09-06
Animator:Greg Shirah (NASA/GSFC) (Lead)
Scientist:Gene Feldman (NASA/GSFC)
Platform/Sensor/Data Set:Aqua/MODIS (winter: 2003/02/10 - 2004/02/17 summer: 2002/07/12 - 2004/07/18)
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio
 
Keywords:
SVS >> Phytoplankton
SVS >> Population growth
SVS >> Urbanization
SVS >> For Educators
SVS >> Dynamics of Populations
SVS >> Photosynthesis
SVS >> Location >> Mississippi
SVS >> Location >> Gulf of Mexico
SVS >> Hydrosphere >> Oceans >> Dead Zone
SVS >> Hydrosphere >> Oceans >> Anomalies
 
 


Back to Top
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

USA.gov logo - the U.S. Government's official Web portal. + Privacy Policy and Important Notices
+ Reproduction Guidelines
NASA NASA Official:
SVS Contact:
Curator: