April, 2013


GIS Data

Map showing the twenty eco-climatic domains and 106 NEON data collection sites. Click on image for larger map.

Mapping Ecological Change with NEON

With Earth Day nearing, it is an opportune time to highlight a developing project, the National Ecological Observatory Network (NEON).  NEON is funded by the National Science Foundation.  Elizabeth Blood, the National Science Foundation program director responsible for overseeing NEON, Dave Tazik, NEON’s director of biology and project scientist, and Tom […]

Spatial Analysis

Click and drag the slider bar to compare these LDCM images, which zoom into the area around Fort Collins, Colo. On the left, the image is shown in natural color, created using data from OLI spectral bands 2 (blue), 3 (green), and 4 (red). The image on the right was created using data from OLI bands 3 (green), 5 (near infrared), and 7 (short wave infrared 2) displayed as blue, green and red, respectively. In the left-hand natural color image, the city's elongated Horsetooth Reservoir, a source of drinking water, lies west of the city. A dark wildfire burn scar from the Galena Fire is visible just to the left of the reservoir. The scar shows up bright, rusty red in the false color image.

Landsat 8

One of NASA’s latest missions involves the Landsat 8, an orbiting satellite whose purpose it is to map the earth and track changes as seen from space. The National Aeronautics and Space Administration has been launching Landsat satellites into space since the early 1970s. The first Landsat satellite was launched […]

GIS Learning

Checking a paper map or fiddling with an in car navigation device is okay, but holding a smartphone with a navigation app running is illegal in California.

Smartphone Maps Illegal While Driving but Paper Maps are Okay in California

In recent years, some states have been putting harsher laws in place to curb drivers talking on their cellphones or text messaging while operating their vehicles. Most of us agree that those practices are dangerous but what about using your smartphone for a map? A recent court case in California […]

Spatial Analysis

Example of wide-area mapping of terrain deformations over mainland Greece. This GPS-calibrated deformation map covers 65 000 sq km – approximately half of the country’s territory. This map was created using 10 individual ERS-1/2 stacks, each stack being a time series of 58 to 76 SAR images acquired from 1992 to 2003 for a total of 671 images. Source: ESA.

Using Remote Sensing to Measure Land Deformation

The European Space Agency has developed a new land data processor to create maps of land deformation.  Called Wide Area Processor (WAP), the processes uses radar data to measure millimeter terrain deformations.  Changes in the surface height of a landscape occur over time.  Sinking of the earth can happen as a result of mining, […]