Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufm.p51e..01c&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #P51E-01
Physics
6022 Impact Phenomena, 6205 Asteroids And Meteoroids
Scientific paper
We report on a recent comprehensive and quantitative reassessment of the hazard posed by Near-Earth Objects (NEOs). This hazard originates from three distinct impact-related phenomena. We estimate, in the mean, 60(+45/-25) fatalities per year from direct blast effects, 180(+200/-120) people displaced per year from impact tsunami inundation, and 1000(+2050/-700) fatalities per year from global climatic disruption. Of these hazards, the global threat is largely associated with impacts by kilometer-plus diameter objects. These larger objects are far fewer and much easier to discover than the sub-km objects that are primarily responsible for the blast and tsunami risks. We find as a result that current survey efforts are making substantial progress in reducing the global hazard, in terms of fatalities per year, and should retire over 90% of it before 2008, but that little progress can be expected in removing the hazard from sub-km impactors. By 2008 the remaining global hazard will be on par with the remaining sub-km hazard and a more capable survey will be required to preserve momentum in NEO hazard retirement.
Chesley Steven R.
Harris Alan W.
Ward Steven N.
Yeomans Donald Keith
No associations
LandOfFree
An Updated Assessment of the Hazard Due to Earth Impacts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An Updated Assessment of the Hazard Due to Earth Impacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Updated Assessment of the Hazard Due to Earth Impacts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1426250