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Media Advisory: Landsat at 40: The Long View of Earth from Space



Media Advisory: Landsat at 40: The Long View of Earth from Space

WASHINGTON, D.C.  –  The U.S. Geological Survey (USGS) and NASA will hold a news conference at 11 a.m. EDT, Monday, July 23, to highlight the accomplishments of the world’s longest-running Earth-observing satellite program — Landsat. The briefing to be held at the Newseum in Washington, DC, will feature extensive imagery of our changing planet as well as chronological imagery and descriptions of selected U.S. landscapes.

In cooperation with the U.S. Department of the Interior (DOI) and its science agency, USGS, NASA launched the first Landsat satellite on July 23, 1972. The resulting 40-year archive of Earth observations from the Landsat fleet forms an impartial, comprehensive, and easily accessed register of human and natural changes on the land. This information supports the improvement of human and environmental health, biodiversity, energy and water management, urban planning, disaster recovery and crop monitoring. 

During the briefing, NASA and USGS will announce the 10 most significant images from the Landsat record; the U.S. regions selected for the “My American Landscape” contest showing local environmental changes; and the top five Landsat “Earth As Art” images selected in an online poll.

Who: Anne Castle, DOI Assistant Secretary for Water and Science, Washington
Waleed Abdalati, Chief Scientist, NASA Headquarters, Washington
Jeff Masek, NASA Landsat Project Scientist, Goddard Space Flight Center, Greenbelt, MD
Tom Loveland, USGS Senior Scientist, USGS-EROS, Sioux Falls, SD
Jim Irons, Landsat Data Continuity Mission Project Scientist, Goddard Center, Greenbelt, MD
Roger Auch, Research Geographer, USGS-EROS, Sioux Falls, SD
Where: Newseum
555 Pennsylvania Ave. NW
Washington, DC
When: Monday, July 23; 11 a.m. – 12:30 p.m. EDT  

Registration is required. Media may ask questions of the panelists during the briefing. Due to limited space and building security, reporters who want to attend the briefing must send their name, affiliation and telephone number to Steve Cole no later than 4 p.m. EDT, July 20. Reporters unable to attend the briefing in person can ask questions during the event via Twitter using the hashtag #asknasa. NASA Television and the NASA website will provide live briefing coverage.  

Visit NASA TV for more information.

The Landsat program is jointly managed by NASA and DOI/USGS. NASA is preparing to launch the next Landsat satellite in February 2013. For more information about the Landsat program, visit the USGS Landsat Missions website and NASA’s Landsat website.

USGS Newsroom



More information

Parameter Value Description
Magnitude mb The magnitude for the event.
Longitude ° East Decimal degrees longitude. Negative values for western longitudes.
Latitude ° North Decimal degrees latitude. Negative values for southern latitudes.
Depth km Depth of the event in kilometers.
Place Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 1970-01-01 00:00:00 Time when the event occurred. UTC/GMT
Updated 1970-01-01 00:00:00 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status Indicates whether the event has been reviewed by a human.
Tsunami This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG A number describing how significant the event is. Larger numbers indicate a more significant event.
Network The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type The method or algorithm used to calculate the preferred magnitude for the event.
Event Type Type of seismic event.
Event ID Id of event.
Event Code An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS A comma-separated list of event ids that are associated to an event.

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