satellite imagery


This Interferogram Shows Ground Displacement in Italy as a Result of the Recent Earthquake

Interferogram showing the ground deformation caused by the August 24, 2016 earthquake in Italy. Source: modified Copernicus Sentinel data (2016)/ESA/ CNR-IREA.Interferogram showing the ground deformation caused by the August 24, 2016 earthquake in Italy. Source: modified Copernicus Sentinel data (2016)/ESA/ CNR-IREA.

The European Space Agency posted an interferogram showing ground displacement as a result of the recent earthquake in Italy.

Relief Inversion

Is this a ridge or a canyon? Relief inversion plays tricks on the brain with this image of the Colorado River in Arizona. Photo: NASAIs this a ridge or a canyon? Relief inversion plays tricks on the brain with this image of the Colorado River in Arizona. Photo: NASA

When looking at aerial and satellite imagery, telling the difference between a canyon and a mountain can sometimes be tricky due to an optical illusion known as relief inversion.  Most people have a subconscious interpretation of images based on the assumption that objects are illuminated from above.  We expect the […]

How Many Lakes are there in the World?

NASA’s Terra satellite image of the Great Lakes. Acquired: September 26, 2014. Source: NASA.NASA’s Terra satellite image of the Great Lakes. Acquired: September 26, 2014. Source: NASA.

Counting the number of lakes in the world until recently was more of a guessing game than an exact science.  A recently study published in Geophysical Research Letters used satellite data to remotely sense the number of lakes larger than 0.002 square kilometers.  An automated algorithm called GWEM (GeoCoverTM Water […]

Borders that are Visible on Satellite Imagery

The border between northwestern China around the city of Qoqek and far eastern Kazakhstan near Lake Balqash.The border between northwestern China around the city of Qoqek and far eastern Kazakhstan near Lake Balqash.

The differing effects of one country’s activities as opposed to its neighbors can be so dramatic that the results are visible from space, especially through the lens of a satellite.  Listed here are international borders that are visible on satellite imagery. Forestation, agricultural practices, electrical usage at night, and water […]