Released by an international team of scientists is a laser-radar image of the area surrounding the site of a Magnitude 7.2 earthquake that occurred in Mexicali, Mexico, in 2010. The laser radar technique can spot surface changes of just a few centimetres; in this image the blue represents a post-quake reduction in height and red indicates an increase.
Posts Tagged ‘satellite imagery’
The National Oceanic and Atmospheric Administration’s (NOAA) Center for Climate Prediction holds a monthly drought briefing by teleconference to identify the latest drought areas in North America, according to Don Comis of the USDA Agricultural Research Service (ARS). ARS scientists, Martha Anderson and Bill Kustas, are hoping that in a year or so, data from their computer model/satellite package will give evapotranspiration (ET) maps a seat at that briefing.
ASPRS Board votes unanimously for immediate funding to continue national moderate resolution imaging programMonday, February 13th, 2012
Recently the American Society for Photogrammetry and Remote Sensing (ASPRS) Board of Directors voted unanimously for a third resolution calling for immediate support and funding for the continuation of the Nation’s moderate resolution imaging program. Several events have led to the possible discontinuation of the collection of moderate resolution, multispectral remote sensing. One of those events was the technical failure in the Enhanced Thematic Mapper Plus (ETM+) instrument on-board the Landsat 7 spacecraft in May 2003, and most recently the decline of the Landsat 5 spacecraft.
Although many other remote sensing efforts exist these days, the more than 40 years of uninterrupted Landsat imagery has been instrumental in monitoring ongoing stresses on the Earth from climate change, population, land use and other factors that challenge the natural resources available to mankind. According to the announcement, measuring the Earth’s resources such as food, water, and energy is best done by collecting and implementing moderate resolution imagery.
In GeoEye’s gallery are numerous high resolution images of locations across the globe. The Eastern Algerian portion of the Sahara is an otherworldly place, a region of great diversity with endless stretches of sand dunes and rocky platforms that can reach more than 2,000 meters. The Tassili n’Ajjer “Plateau of the Rivers” National Park is a vast plateau in southeast Algeria at the borders of Libya, Niger, and Mali, covering 72,000 square kilometers. Satellite Image Courtesy of GeoEye
The Denver area has become a center of satellite imagery providers in recent years. Proposed steep cuts in the U.S. Department of Defense budget could affect satellite-imagery providers DigitalGlobe, headquartered in Longmont, and GeoEye,based in Virginia with a processing and operations center in Thornton. Combined, the companies have about 1,200 employees.
On December 16, 2011, Soyuz launched the Pléiades 1a satellite from the Guiana Space Centre (CSG), a new version of the satellite that flew in October. The Pléiades 1a was built by Astrium for the French space agency CNES.
According to a press release issued by NASA and the U.S. Geological Survey (USGS) November 18, the Landsat 5 Mission may no longer remain in operation. The reason for this is the USGS has stopped acquiring images from the 27-year-old Landsat 5 Earth observation satellite due to a rapidly degrading electronic component.
A Landsat 5 image of the Wallow Fire acquired on June 15, 2011. Landsat imagery courtesy of NASA Goddard Space Flight Center and U.S. Geological Survey
When Landsat 5 was launched in 1984 it was designed to last 3 years. The USGS assumed operation of Landsat 5 in 2001 and managed to rescue the aging satellite back from the brink of total failure on several occasions following the malfunction of key subsystems.
“This anticipated decline of Landsat 5 provides confirmation of the importance of the timely launch of the next Landsat mission and the need for an operational and reliable National Land Imaging System,” stated Anne Castle, Assistant Secretary for Water and Science at the U.S. Department of the Interior. “The USGS is committed to maintaining the unique long term imaging database that the Landsat program provides.”
The amplifier that is in jeopardy is essential for transmitting land-surface images from the Landsat 5 satellite to ground receiving stations in the U.S. and around the world. In the past 10 days, amplifier problems have significantly diminished the satellite’s ability to down load images.
Now USGS engineers have suspended imaging activities for 90 days so that they can explore possible options for restoring satellite-to-ground image transmissions.
The USGS-operated Landsat 7 is actively in orbit collecting global imagery. Launched in 1999 with a 5-year design life, Landsat 7 has experienced an instrument anomaly which reduces the amount of data collected per image. A new satellite, Landsat 8, currently named the Landsat Data Continuity Mission, is now scheduled to be launched in January 2013.
On October 14, 2011, scientists participating in NASA’s IceBridge mission, saw a huge crack in the ice running about 29 kilometers (18 miles) as they flew across Antarctica’s Pine Island Glacier in a DC-8 research plane.
“The rift was 80 meters (260 feet) wide on average, and 50 to 60 meters (165 to 195 feet) deep. It marks the moment of creation for a new iceberg that should eventually span about 880 square kilometers (340 square miles) once it breaks loose from the glacier.”
Witness the Birth of an Iceberg Earth Imaging Journal
Patrick Meier, PhD, director of Crisis Mapping at Ushahidi and previously co-directed Harvard’s Program on Crisis Mapping and Early Warning, has a blog, where he outlines a project of the “Standby Volunteer Task Force (SBTF)” new team recently launched called the Satellite Imagery Team. This team is in Somalia due to a partnership with UNHCR, DigitalGlobe, Tomnod, SBTF and Ushahidi.
From October 13 and October 23 RapidEye took true color, high-resolution RapidEye satellite images featuring a gigantic stain visible on the surface of Las Calmas Sea resulting from a submarine eruption out of the coast of El Hierro, Spain. The eruption occurred at 1200 meter below sea level at 10.43 local time (09:43 UTC) on October 10, 2011.