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Impact on the earth, ocean and atmosphereOn the basis of finite-difference techniques, cratering flow calculations are used to obtain the spatial attenuation of shock pressure with radius along the impact axis for the impact of silicate rock and iron impactors on a silicate half-space at speeds of 5 to 45 km/sec. Upon impact of a 10 to 30 km diameter silicate or water object onto a 5 km deep ocean overlying a silicate half-space planet at 30 km/sec, it is found that from 12 to 15 percent of the incident energy is coupled into the water. The mass of atmosphere lost due to impacts of 1 to 5 km radius projectiles is calculated.
Document ID
19880033067
Document Type
Reprint (Version printed in journal)
Authors
Ahrens, Thomas J. (California Inst. of Tech. Pasadena, CA, United States)
O'Keefe, John D. (California Institute of Technology Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: International Journal of Impact Engineering
Volume: 5
ISSN: 0734-743X
Subject Category
METEOROLOGY AND CLIMATOLOGY
Funding Number(s)
CONTRACT_GRANT: NGL-05-002-105
CONTRACT_GRANT: NSG-7129
Distribution Limits
Public
Copyright
Other