Meteor Crater formed by low-velocity impact
نویسندگان
چکیده
منابع مشابه
Meteor Crater, Arizona
The location of Meteor Crater is shown on nearly all highway maps of Arizona. It lies 6 mi (9.7 km) south of 1-40 between Flagstaff and Winslow in northern Arizona; the turnoff from 1-40, 34 mi (55 km) east of Flagstaff, is well marked by signs along the highway. Access to the crater is by a paved road that leads directly to a visitor center and museum on the rim of the crater. Qualified scient...
متن کاملReviewing the Impact Parameters for Meteor Crater Using Autodyn
Introduction: Meteor Crater, Arizona, is a young (50,000yr old), relatively pristine, simple crater, and is one of the most famous and most studied on the planet. Its diameter is 1.2km with a somewhat eroded rim that originally stood at 67m, but now lies at 47m [1]. Its original depth below the surface was 180m [2] but this has been partially infilled by lake bed deposits. In addition, the floo...
متن کاملErosion of Ejecta at Meteor Crater, Arizona
New methods for estimating erosion at Meteor Crater, Arizona, indicate that continuous ejecta deposits beyond 1/4-1/2 crater radii from the rim (0.25R-0.5R) have been lowered less than 1 m on the average. This conclusion is based on the results of two approaches: coarsening ofunweathered ejectainto surface lag deposits and calculation of the sediment budget within a drainage basin on the ejecta...
متن کاملMeteorological Experiments in Arizona ’ s Meteor Crater
of Utah, Salt Lake City, Utah; muschinski, hohreiter, behn, and cheon—University of Massachusetts at Amherst, Amherst, Massachusetts; Zhong and Yao—Michigan State University, East Lansing, Michigan; Fritts—Colorado Research Associates, Division of NorthWest Research Associates, Boulder, Colorado; clements—San Jose State University, San Jose, California; horst, broWn, and oncleY—National Center ...
متن کاملFragmentation of ice by low velocity impact
Low velocity impact experiments (0.14 to l km/ s) carried out in polycrystalline water ice targets at 257 and 81 K resulted in interactions which can be assigned to four fragmentation classes, cratering, erosion, disruption, and total fragmentation. Specific kinetic energies for the transitions between these classes range from l x 105 to 7 x 105 ergs/g for 81 K ice and from 3 x 105 to 2 x 106 e...
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ژورنال
عنوان ژورنال: Nature
سال: 2005
ISSN: 0028-0836,1476-4687
DOI: 10.1038/434157a