On November 26, 2005, the back-up solar array drive on Landsat 5 began exhibiting unusual behavior. The solar array drive maintains the proper pointing angle between the solar array and the sun. The rotation of the solar array drive became sporadic and the solar array was not able to provide the power needed to charge the batteries. Maintaining power to the batteries is critical to sustain proper operation of the spacecraft. The primary solar array drive failed under similar circumstances last January. As a result of this current situation, imaging operations will be suspended for at least the next two weeks or until attempts to solve the problem have been resolved.
Landsat 5, launched in March 1984, has performed far beyond its three-year design lifetime and has continued to collect global land surface coverage. Over 125,000 images, from the Chernobyl disaster to Hurricane Katrina, have proven invaluable for identifying the impact of natural and human-induced changes. Landsat 5 and Landsat 7 together provided full global coverage of the Earth’s surface every eight days.
The Landsat Program is the longest running program providing vital images of the Earth’s surface from space. The first Landsat satellite was launched in 1972 and since then, Landsat satellites have been providing a constant stream of moderate-resolution images. In 1999, the Landsat Program took a giant leap forward technologically with the launch of Landsat 7. The instruments on the Landsat satellites have acquired millions of images of the surface of the planet, providing a unique resource for scientists who study agriculture, geology, forestry, regional planning, education, mapping and global change research.
The Landsat Program is a joint initiative of USGS and NASA to gather Earth resource data using a series of satellites including Landsats 5 and 7. NASA is responsible for developing and launching the spacecrafts, while the USGS is responsible for flight operations, maintenance, and management of all data reception, processing, archiving, product generation, and distribution. The primary objective of the Landsat Program is to ensure a consistent, calibrated collection of Earth imagery that can be used to scientifically measure change over decades and beyond. Landsat’s global survey mission is to repeatedly capture images of the Earth’s land mass, coastal boundaries, and coral reefs; and to ensure the data acquired are of maximum utility in supporting the scientific objectives of monitoring changes in the Earth’s land surface and associated environment.
Updates and further information are available at landsat.usgs.gov.
GISuser Feature Articles
Top iPhone related GIS and Geo Tech news stories from 2009 - At the end of the year its always interesting for us to look at some of the stats and results to identify trends and more important, to see what our readers think is hot! In the "news" category it seems that iPhone related geo tech items were extremely popular.
Geo Social Location Checkin to Twitter from iPhone - With the cool SXSW event taking place Austin, TX, everyone who's anyone in social and social location seems to have rolled out updates this week, making your choice for how to check-in to your social media bookmarks even tougher to decide on!
10 Awesome GIS and Mapping apps for the iPhone - I recall last year at the ESRI UC when an iPhone was on stage showing a prototype app (think ArcPad on iPhone). It was then that I realized the iPhone platform is going to be BIG in mapping and there's a ton of opportunity for developers.
Nokia Booklet 3G, unboxing video and image gallery... Those of you in the USA who pop in to BestBuy occasionally, you may have seen a stand showing off the Nokia Booklet 3G. A sleek, 3G enabled, SIM slot (AT&T) sporting netbook.
Interesting Tweeple - 10 Geo Technology & Geo-Social Women of Twitter - given the growing love for geospatial and location-aware technologies, I’ve decided to hype 10 women that I feel make a significant contribution to the Geo-Twittersphere. If you’d like to add 10 knowledgeable and useful Twitter contacts to your Geo following list I highly suggest the following: (in no particular order)
10 Geo Social Location-Aware Apps Making Waves... With Twitter's opening of their location API to developers there's going to be a ton of third party apps that will enable Twitter users to share location-aware information via their Twitter accounts.
Signs that indicate you may be a GeoGeek (aka. GeoNerd) and some suggested Geo blogs - Chances are good that if you are a Geo Geek then you already know it and likely refer to yourself as one. However, there’s many of you out there that may be on the fence and wondering… “am I a Geo Geek?" Read on for a comprehensive list of signs you might be a GeoGeek followed up by some suggested Geoblog reading.
Real-time GPS Mapping and GIS Solution Aids Efficient Disaster Management - Saturday, February 7, 2009 will forever be known as Black Saturday in the State of Victoria, Australia. In the midst of a 10-year drought, a record breaking heat wave descended upon the state, with temperatures exceeding 45 degrees C (110-120 deg F), breaking all-time record highs in some cities - Victoria Police Use Trimble Juno SC Handhelds to Speed Assessment of Damage Caused by Bush Fires.
2010 ESRI Federal User Conference February 17-19, 2010, Washington D.C. Walter E. Washington Convention Center - The FedUC is the largest geospatial conference for federal agencies. Connect with other leaders, decision makers, and GIS professionals.
The International LiDAR Mapping Forum 2010 - Tenth Anniversary Event! ILMF 2010 will be held from March 3 - 5, 2010 at the Hyatt Regency in Denver at Colorado Convention Center.
The NAVTEQ 2010 Global LBS Challenge Awards Ceremony will be held during Ignite at O'Reilly Where 2.0. Be among the first to hear as NAVTEQ announces the winners for the North America region. Participants will be competing for a global prize pool of $10 million and growing by showcasing pre-commercial location-enabled apps using NAVTEQ map data & products. March 30, 2010, during Ignite Where, 7:30pm - 9:00pm, at the Marriott San Jose, CA
WHERE2.0 2010 - Now in its sixth year, the Where 2.0 Conference is where the grassroots and leading edge developers building location-aware technology intersect with the businesses and entrepreneurs seeking out location apps, platforms, and hardware to gain a competitive edge. For 15% use Discount Code: whr10lbs
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