NASA’s Landsat Satellites See Texas Crop Circles – Of the Irrigation Kind

Outlet: ScienceDaily

April 28, 2012

A water-rich polka dot pattern takes over the traditional rectangular patchwork of fields in this time series animation of 40 years of Landsat images. In the dry Texas panhandle near the town of Dalhart, this transformation is due to center-pivot irrigation, a farming method that improves water distribution to fields.