Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
Exelis Shareholders Approve Acquisition by Harris Corporation
MCLEAN, Va., May 22, 2015—Exelis Inc. (NYSE: XLS) announced...
New Maps Reveal Seafloor off San Francisco Area
SANTA CRUZ, Calif., May 22, 2015 — Three new sets...
Dielmo 3D Introduces 100% CUSTOMIZABLE LiDAR/GIS WEB-PORTALS Starting at $5,000.
Valencia, Spain, Centennial CO, May 22, 2015 — DIELMO...
Logan Simpson Deploys TerraGo Edge GPS Data Collection for Environmental Planning
May 22, 2015 — Logan Simpson, a leading environmental...
Esri Challenge Winners Tell Visual Stories of Poland Elections, Global Terrorism, and More
Redlands, California, May 22, 2015 —The Esri Data Viz...

June 12, 2012
Saudi Crops Flourish in the Desert

In this series of Landsat images, sensors detected light reflecting off Earth in the short wave-infrared, near-infrared and green portions of the electromagnetic spectrum. With this combination of wavelengths, new vegetation appears bright green while dry vegetation or fallow fields appear rust colored. Dry, barren surfaces are pink and yellow.

Saudi Crops Flourish in the Desert

Over the past three decades, Saudi Arabia has been drilling for a resource more precious than oil. Engineers and farmers have tapped hidden reserves of water to grow grains, fruits and vegetables in the desert.

The series of false-color images at left show the evolution of agricultural operations in the Wadi As-Sirhan Basin, as viewed by satellites in 1991, 2000 and 2012. The images were captured by similar sensors—the Thematic Mapper and Enhanced Thematic Mapper Plus—on three different Landsat satellites (4, 5 and 7). For scale, the agricultural fields in the images are about 1 kilometer (0.62 miles) across and use center-pivot irrigation.

The thirsty plants that rise out of the Arabian desertare quenched by water that dates back to the last Ice Age. In a more temperate past about 20,000 years ago, this “fossil” water filled aquifers that now are buried deep under the sand seas and limestone formations.   

 

Comments are closed.