Comet : An Interdisciplinary Approach by Peter T. Bobrowsky, Hans Rickman

By Peter T. Bobrowsky, Hans Rickman

Leading experts in quite a few disciplines have been first invited to a multidisciplinary workshop funded via ICSU at the subject to realize a greater appreciation and point of view near to comet/asteroid affects as seen by way of diversified disciplines. This quantity presents an important hyperlink among quite a few disciplines and comet/asteroid impacts.

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1999; Morgan et al. 2002). A recent analysis of the disparities in estimates of rim diameters and the implications for energy scaling and resulting potential environmental degradation of specific terrestrial impact events is Chapter 1 · The Geologic Record of Destructive Impact Events on Earth given in Turtle et al. (2005). It can also be shown that there is a bias in the sizes of surviving terrestrial impact structures, since at larger diameters, the cumulative size-frequency distribution can be approximated by a power law; whereas, at diameters below 20 km the cumulative size-frequency falls off the power law, with an increasing deficit of structures at smaller diameters (Grieve and Shoemaker 1994).

G. Chicxulub (Sharpton et al. 1993), Sudbury, Canada (Stöffler et al. 1994; Spray and Thompson 1995), and Vredefort, S. Africa (Therriault et al. 1997). Although certain of their geological and geophysical attributes form annuli, it is not clear that these correspond, or are related in origin, to the obvious topographical rings observed in lunar multi-ring basins (Spudis 1993; Grieve and Therriault 2000). Attempts to define diagnostic morphometric relations, particularly depth-diameter relations, for terrestrial impact structures have had limited success, because of the effects of erosion and, to a lesser degree, sedimentation.

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