170000000 Pieces of Space Junk|
April 28, 2013 | Sixth European Conference on Space Debris
“Since 1957, more than 4,900 space launches have led to an on-orbit population today of more than 22,000 trackable objects, with sizes larger than 10 cm. Approximately 1,000 of these are operational spacecraft. The remaining 94% are space debris, i.e. objects which no longer serve any useful purpose. [...] In addition, an estimated 700,000 objects larger than 1 cm and 170 million objects larger than 1 mm are expected to be in Earth orbits.” Quoted from the ESA Conference on Space Debris.
GOCE Satellite Expected to Fall this Weekend
November 9, 2013 | New York Times
The European Space Agency’s Gravity Field and Steady-State Ocean Circulation Explorer satellite is expected to fall from orbit this weekend. Space experts believe that 25 to 45 pieces of the craft will survive the fall to earth, with the largest pieces weighing up to 200 pounds. The location of impact is unknown.
Wildfires and Debris Flows
February 27, 2014 | The Landslide Blog
The Landslide Blog has an interesting post on the association of wildfires and subsequent debris flows - with information on debris flow probability mapping.
Monsoon Rains and Debris Flows in Arizona
June 30, 2013 | Arizona Public Media
A new video titled "Monsoon Rains Bring the Risk of Debris Flows" has been posted on the Arizona Public Media website. Phil Pearthree of the Arizona Geological Survey guides you through some debris flow deposits.