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Crater ejecta morphology and the presence of water on mars
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schultz, Peter H. |
| Copyright Year | 1987 |
| Description | The purpose of this contribution is to review the possible effects of projectile, target, and environment on the cratering process. The discussion presented suggests that contradictions in interpreting Martian crater ejecta morphologies reflect oversimplifying the process as a singular consequence of buried water. It seem entirely possible that most ejecta facies could be produced without the presence of liquid water. However, the combination of extraordinary ejecta fluidity, absence of secondaries, and high ejection angles all would point to the combined effects of atmosphere and fluid rich substrates. Moreover, recent experiments revealing the broad scour zone associated with rapid vapor expansion may account for numerous craters in the circum-polar regions with subtle radial grooving extending 10 crater radii away with faint distal ramparts. Thus certain crater ejecta morphologies may yet provide fundamental clues for the presence of unbound water. |
| File Size | 195698 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870014075 |
| Archival Resource Key | ark:/13960/t8sb8zw39 |
| Language | English |
| Publisher Date | 1987-05-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Geochronology Atmospheric Effects Geomorphology Ejecta Vaporizing Atmospheric Pressure Volatility Mars Craters Air Water Interactions Land Ice Mars Surface Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
