Nov 18, 2009Evaluating Mangroves After the 2004 Indian Ocean Tsunami

Nov 18, 2009 • During the devastating 2004 Indian Ocean tsunami, more than 200,000 people lost their lives. Some coastal communities were shielded from the waves’ destruction by mangrove forests, which motivated efforts to protect and restore them. As a foundation for conservation planning, remote-sensing ecologist Chandra Giri of the U.S. Geological Survey’s Center for […]

rice paddies
Nov 18, 2009How Wetlands and Rice Paddies Affect the Spread of Bird Flu

Nov 18, 2009 • In the mid-1990s, highly pathogenic avian influenza (bird flu) emerged in southern China. Severe outbreaks in the winter of 2005-2006 spread the virus, designated H5N1, across Asia, Europe, and Africa, killing hundreds of people, thousands of wild birds, and millions of poultry. In fall 2009, scientists and public health officials continued […]

forest change in Paraguay
Nov 18, 2009With Global Land Surveys, Scientists Map Forest Change Since 1990

Source: Rebecca Lindsey; NASA Earth Observatory At the Global Land Cover Facility at the University of Maryland-College Park, the computers are in training. For the past few months, geographer and remote-sensing scientist John Townshend and his UMD research group, Jeff Masek with NASA Goddard Space Flight Center, and Matt Hansen with South Dakota State University have […]

Tehran, Iran
Nov 18, 2009NASA’s Newest Map of the World

Nov 18, 2009 • In June 2009, NASA and the U.S. Geological Survey put the finishing touches on a new collection of mapped images covering the entire land surface of the Earth and made them available to anyone, anywhere in the world, absolutely free. The result of a collaboration between NASA, the U.S. Geological Survey, […]

Nov 17, 2009Brazil Reports Lowest Rate of Amazonian Deforestation in Two Decades

Brazil’s space agency, the National Institute for Space Research (INPE), has reported the lowest rate (km²/yr) of deforestation in the Brazilian Amazon since 1988 when the agency began its annual space-based assessments. Brazil uses Landsat data as a key input for their systematic monitoring of Amazonian deforestation, a project known as PRODES (Estimate of Amazon […]

Nov 16, 2009Free U.S. Earth Imagery Sharpens Shared View of Global Challenges

Source: USGS Free, easily accessible U.S. satellite data enables any citizen, scientist, or analyst who can use the information to contribute to a shared vision of the challenges facing our planet. That’s the message the newly-appointed director of the U.S. Geological Survey, Dr. Marcia McNutt, plans to deliver when representatives of 80 governments and over 50 […]

Nov 12, 2009Landsat Used to Estimate Deforestation in Sumatra’s Leuser Ecosystem

Nov 12, 2009 • On Indonesia’s island of Sumatra a large expanse of tropical rainforest, known as the Leuser Ecosystem, is home to many endangered species of plants and animals. Among its more famous animals are orangutans, rhinoceros, elephants, and tigers. The ecosystem also provides services for the people of Sumatra such as clean water […]

Nov 12, 2009Landsat Enables Remote Detection of Dangerous Water Pollutants

A young Ohio business, Blue Water Satellite, Inc., is using Landsat 5 and 7 data to detect potentially harmful pollutants in water bodies across the U.S. used for recreation and for drinking water supplies. Using Landsat and algorithms developed at Ohio’s Bowling Green State University, Blue Water can detect E. Coli, cyanobacteria, phosphorus, and Red […]