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Map Shows Frequency of Small Asteroid Impacts, Provides Clues on Larger Asteroid Population

Small asteroids near Earth, with sizes of only about a meter, hit the atmosphere and disintegrate with surprising frequency - around every other week, new data show. Sensor data reveal that these small impact events are frequent and random. A map of these small impact events released by NASA shows the frequency and approximate energy released by bolide events detected from 1994 through 2013.The new data will be extrapolated to estimate more precisely the frequency of impacts by asteroids large enough to cause ground damage. 

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News and Analysis

When to Expect the “Coldest Day of the Year”

As winter approaches, much of the United States is beginning to brace for the cold, while some areas have already experienced their coldest day of the year. To give you a better idea of the coldest time of year for your area, the National Data Climatic Center has created a new...Read more

GIS Government Weekly News: Flooding in Jakarta, National Addresses, NSDI in T&T

Crowdsourcing Flooding in Jakarta Jakarta has a new tool [right] to monitor and respond to flooding in the low-lying capital. Developed by researchers from the SMART Infrastructure Facility at Australia’s Wollongong University in collaboration with Twitter and...Read more

Defense Logistics Agency Supports Ebola Effort with Maps

More than 18,000 maps have been distributed by the Defense Logistics Agency Aviation Customer Operations Directorate’s Mapping Customer Operations Division to support the effort to contain the Ebola virus in West Africa.

GIS Education News Weekly: Big Fork Supports ConnectED, Mentors, Geography Needed

Why High Schools Don't Teach GIS There aren’t many high schools that teach GIS as it’s a not obvious where the course belongs. “It’s difficult to figure out where to put it because it’s so non-traditional,” [Hans] Bodenhamer [GIS instructor at...Read more

GIS Government Weekly News: Pierce County Open Data, Jamaica Development, TIGER Lives!

(This weekly government post is typically published on Wednesdays; I moved it up a day due to the Thanksgiving holiday this week!) Pierce County Washington Open Data Site In celebration of International GIS Day, Pierce County is launching a free new...Read more

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