USGS


This image is a portion of the first Landsat 8 scene acquired May 12, 2013 (Path 107, Rows 70-71) in Western Australia. Geoscience Australia, a Landsat International Cooperator and a Landsat Science Team Member, produced this enhanced image. Water and land were masked, separately enhanced, and then reassembled.The water patterns are the result of an RGB display of the Landsat 8 red, blue, and ultra-blue bands (bands 4, 2, 1) and the land is shown using SWIR, NIR, and green (bands 6, 5, 3). The resulting image displays impressive sediment and nutrient patterns in the tropical estuary area, and the complex patterns and conditions in the vegetated areas.

First Landsat Spacecraft Launched – Today in Geospatial – July 23

On July 23, 1972, the first Landsat spacecraft was launched.  At the time it was known as the Earth Resources Technology Satellite and it was the first satellite launched to study the earth’s landmasses.  In 1975, the name was changed to Landsat.  Since then, this program has been continuously monitoring changes […]

USGS Report on the Uses and Benefits of Landsat Imagery in Water Resources

The USGS recently published a report looking at case studies of Landsat Imagery use in water resource management within public and private entities. The Landsat satellite imagery program has been collecting data since 1972 and is available for free to the public. Entitled, “Landsat and Water—Case Studies of the Uses […]

A portion of an engraving (top) used to print the black ink for a USGS topographic map (bottom) . (Photo courtesy of Bruce Geyman.)

USGS Map Engravings for Sale This Summer

Between the 1880s and the 1950s, the USGS produces engravings used to reproduce topographic and geologic maps within the agency.  Many of the excess engravings are being readied for sale or donation by the USGS.  The metal engravings are mostly copper alloy with a few made of zinc.  Most of […]

Map of tweets containing the word “terremoto” (Italian for “earthquake”) collected in the two minutes following a magnitude 6.0 earthquake in Northern Italy on May 5, 2012. The red star shows the location of the earthquake. The tweets are concentrated in the epicentral area but discussion of the earthquake has already spread beyond the impacted region. This shows the speed that USGS Tweet Earthquake Dispatch (TED) collects tweets to provide insight into potential earthquake events. Image Credit: USGS

Crowdsourcing with the USGS

The U.S. Geological Survey is putting out a call for citizen scientists (that means you) to help them track and gather geographic information on what is happening all around the globe. Here are the some of the most well-known USGS crowdsourcing projects.

Columbia Glacier, in Prince William Sound, showing snow retreat from 1984-2011.

Timelapse Satellite Imagery – View Changes on Earth over Time

The series of Landsat satellites has been collecting global imagery continuously since 1972.  A total of eight satellites and millions of pictures (and trillions of pixels) has resulted in a hugh amount of imagery which, when compiled, visualizes the massive amount of global change over the past thirty+ years.  Landsat […]