自由职业者
发表于 2025-3-23 13:11:11
Wissenschaftsjahr 2008 — Die Mathematik impacts. It was found that bacteria can survive hypervelocity impacts at 5 km s., with a survival rate of 1 per 3.5 million using targets of nutrient gel. With ice targets no survival has been found yet with a limit on survival of less than 1 per 0.4 million.
极端的正确性
发表于 2025-3-23 15:58:09
Structure-filling Sediments of the Wetumpka Marine-target Impact Structure (Alabama, USA)r revealed that Wetumpka’s structure fill has two distinctive units: (1) an upper, resurge-deposited unit (~ 60 m thick; same as the “interior unit” above) and (2) a lower, structure-filling breccia unit comprised of fall-back ejecta layers, slumped target-rock blocks, and impact-related sandy breccias and sands (> 130 m thick).
野蛮
发表于 2025-3-23 20:54:43
Estimating Crater Size for Hypervelocity Impacts on Small Icy Bodies (e.g. Comet Nucleus) size and shape for impacts on small, porous bodies. It is found that given our present knowledge, simple scaling with impact energy produces a result compatible to scaling via more sophisticated methods. The handling of the influence of the detailed composition of the ice target (porosity, volatile content, silicate content etc.) is less certain.
companion
发表于 2025-3-23 23:59:24
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MODE
发表于 2025-3-24 05:49:48
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涂掉
发表于 2025-3-24 09:58:59
Book 2004the least understood and studied parts of impact crater geology. The icy impacts are also of great importance in understanding the developments of the outer planets and their satellites such as Mars or Europa. Furthermore, the impact mechanisms, crater formation and collapse, melt production and the
NICHE
发表于 2025-3-24 11:09:47
https://doi.org/10.1007/978-3-662-06423-8Ejecta; Icy Impacts; Marine Impacts; Metamorphose; astrobiology; biology; development; geochemistry; marine;
adulterant
发表于 2025-3-24 18:45:27
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信任
发表于 2025-3-24 21:33:46
Harald Frater,Nadja Podbregar,Dieter Lohmann depositional basins and on icy targets. We also discuss some of the future fields of research that could be of interest, in particular questions regarding triggering of volcanic activity, tsunami generation, and impact-associated petroleum reservoirs. In the discussion of the icy impact craters a s
NIB
发表于 2025-3-25 01:29:39
,The Calderón Reproducing Formula III,rich clays assigned to the Hekkingen Formation (Volgian-Ryazanian age) and penetrated into underlying Middle Jurassic to Triassic rocks. Studies of macro- and microfossil assemblages from core 7329/03-U-01 drilled at the edge of the crater’s central high have revealed the following: 1) a lower unit