Spacer
Spacer
  NASA Logo
Jet Propulsion Laboratory
California Institute of Technology

Vertical spacer bar
+ View the NASA Portal
Spacer
JPL Home Spacer Earth Spacer Solar System Spacer Stars and Galaxies Spacer Technology
Spacer
Aster
Spacer
Gray Bar
Spacer

Spacer
ArrowHOME
Spacer
ArrowMISSION
Spacer
Arrow GALLERY
DividerDividerDivider
Archaeology Archaeology
Divider
Cities Cities
Divider
Geology Geology
Divider
Glaciers Glaciers
Divider
Hydrology Hydrology
Divider
Land Use Land Use
Divider
Natural Hazards Natural Hazards
Divider
Volcanoes Volcanoes
Divider
 red arrowMost Popular Images
Spacer
ArrowDATA
Spacer
ArrowABOUT US
Spacer
Arrow PUBLICATIONS,
    DOCUMENTS &
    TEAM MEETINGS
Spacer
ArrowLINKS
Spacer
Arrow LATEST NEWS
Spacer












ASTER


Spacer

Railroad Valley, NV center-pivot irrigation
Click on Image to Enlarge
Railroad Valley, NV center-pivot irrigation

 (JPG) Railroad Valley, NV center-pivot irrigation (43 KB) ( 600 x 1,250 )
These ASTER sub-images cover an area of 6 x 9 km in Railroad Valley, NV, and were acquired August 17, 2001. The top image shows center-pivot irrigated fields, with healthy vegetation in red. The middle image displays the Normalized Difference Vegetation Index (NDVI), a calculated quantity that portrays the amount of vegetation. The color code shows highest vegetation content in red, orange, yellow, green, blue, purple, and the lowest vegetation concentrations in black. The bottom image is a thermal infrared channel, with warmer temperatures in white, and colder in black. In the thermal image, the northern-most and western-most fields are markedly colder on their northwest areas, even though no differences are seen in the visible image or the NDVI image. This can be attributed to the presence of excess water, which can lead to crop damage. The combination of information from different bands is a powerful tool to monitor crop health and maintenance procedures. The image is centered at 38.5 degrees north latitude, 115.7 degrees west longitude.

Click on thumbnails below for full resolution images.

Railroad Valley, NV center-pivot irrigation Railroad Valley, NV center-pivot irrigation
Type: (JPG)
Size: (43 KB)
Resolution ( 600 x 1,250 )

Please give credit for these images to:
NASA/METI/AIST/Japan Space Systems,
and U.S./Japan ASTER Science Team

Spacer
FIRST GOV
CL 97-1376
6173 hits since 09/15/06.
Added: 10/22/2001 9:49:30 AM
NASA Home Page Questions? Comments? Contact:
Howard Tan
Spacer
Spacer