April 2014


Bahrain built-up areas 2013
Apr 22, 2014Looking at Urban Expansion in Bahrain

[Source: Carla Schafer, AAAS] Satellite images since 1987 show substantial environmental change on the island nation of Bahrain, including shifting vegetation patterns and more than a doubling in the extent of urbanization, according to a new [...]

May 9, 2013Landsat Images Provide the Gold Standard for New Earth Applications

Images from Landsat satellites provided free to the public by the Department of the Interior's U.S. Geological Survey were the starting points for “a new breakthrough” reported today by Time and announced on the Official Google Blog. Using its [...]

Las Vegas in 2010
Mar 7, 2012What Doesn’t Stay in Vegas? Sprawl

• The city of Las Vegas, Nevada has undergone a massive growth spurt. An image series, created in honor of Landsat 5's twenty-eighth birthday, shows the city sprawling across the desert over time.Data from the expansion of Las Vegas was [...]

Feb 8, 2011Mapping and Measuring Urban Expansion to Inform Policy

• While urban expansion in Europe and America has been stymied by the recent economic slowdown, the developing world’s cities have been gobbling up land. In cities with more than 100,000 people, urban land cover expansion is outpacing [...]

Mar 10, 2010Landsat and the “Human Invader”

• In an article titled “Modeling the human invader in the United States,” USGS scientists Thomas Stohlgren, Catherine Jarnevich, and Chandra Giri modeled humans as an “invasive species” as they “spread” in the conterminous U.S. from Read [...]

Feb 23, 2010Deforestation Driven by 21st Century Urbanites

• A recently published Nature Geoscience article by Ruth DeFries et al. reveals that urban pressures (for food and resources) have replaced subsistence farmers as the leading driver of tropical deforestation this century. The study used [...]

Land cover in the York, PA region
Feb 22, 2010Landsat Images Offer Clearer Picture of Changes in Chesapeake Watershed

• Images taken from satellites more than 400 miles above the Earth's surface are bringing land-cover changes throughout the Chesapeake Bay watershed into tighter focus. The images, which capture tracts as small as 30 square meters, offer [...]

Jun 24, 2009Landsat Looks at Land Use Trends Around Mobile Bay

• A recent NASA Technical Report from Stennis Space Center has used Landsat data to document land use changes in Alabama's Mobile Bay watershed between 1972 and 2008. Over those 36 years, researchers found a 55 percent increase in urban [...]

Jul 10, 2008Diversity and Biomass of Tropical Forests Cleared for Land Development

• To learn more about the tropical forests that are cleared when urban and residential development spreads, scientists assembled the most comprehensive time series of land cover maps to date for the island of Puerto Rico.  They learned that [...]

Chesapeake Bay
Apr 22, 2008Landsat’s Role in Chesapeake Bay Management

• John Smith’s Bay Then & Now - When Captain John Smith first explored the Chesapeake Bay in 1607, the “Great Shellfish Bay,” as it was called by the Algonquian Natives, had transparent waters teeming with aquatic life, massive Read [...]