Scientists can create higher resolution maps showing small variations in the earth’s gravity gradient by combining data from two different satellites. The NASA–German Grace satellites were launched in May of 2002 in order to map variations in Earth’s gravity field. The two satellites fly about 220 kilometers (137 miles) apart in a polar […]
GOCE
Spatial Analysis
GOCE Gravity Mapping Mission Has Ended
Launched on March 17, 2009 by the European Space Agency (ESA), the low altitude satellite GOCE is set to run out of fuel around October of this year. GOCE, which stands The Gravity field and steady-state Ocean Circulation Explorer was launched with the purpose of mapping the Earth’s gravity field at a high level of detail.
GIS Learning
GeoBriefs: Embedding Google Maps, GIS Career Profile, Mexico Wins the Geography Bee
UPDATE: Google has formally announced the availability of embedded Google Maps. Read about it and get instructions on using this new functionality from Google’s Lat Long Blog: YouTube-style Embeddable Maps As reported on the CNET site, Google Maps is poised to release a new feature next week that will allow users […]
Spatial Analysis
Mapping mountains from space with GOCE
Mount Everest 1 August 2007 How high is Mount Everest exactly? Recent surveys have come up with heights that differ by more than five metres. An expedition called the Geodetic Journey is making its way through China and Tibet to highlight the importance of geodesy and how an accurate model […]