The Tunguska impact event and beyond

Details The Tunguska impact event and beyond The Tunguska impact event and beyond

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26g....50a..18n&link_type=abstract

Astronomy & Geophysics, Volume 50, Issue 1, pp. 1.18-1.26.

Physics

Geophysics

2

Scientific paper

Current strategies for dealing with the impact hazard are geared towards the detection and deflection of near-Earth asteroids, which typically have approach speeds ~20 km s-1 and involve decades of warning. However, galactic signals in the age distribution of well-dated impact craters suggest that the globally destructive impactors (diameters between 1.5 and 2 km and upwards) ultimately derive from the Oort cloud. Warning times are then measured in months or days, and characteristic approach speeds are ~55 km s-1. Concentrations of sub-kilometre debris in meteor streams may also be a significant regional hazard. Intersection with the debris of a large short-period comet may account for the widespread biological and cultural dislocation in North America around 12 900 BP.

Affiliated with

Also associated with

No associations

Rating

The Tunguska impact event and beyond 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 The Tunguska impact event and beyond, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Tunguska impact event and beyond will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-834401