Impact disruption of Bjurböle porous chondritic projectile
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arXiv
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
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| _version_ | 1866929369360891904 |
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| author | Kohout, Tomas Pajola, Maurizio Soini, Assi-Johanna Lucchetti, Alice Luttinen, Arto Duchêne, Alexia Murdoch, Naomi Luther, Robert Chabot, Nancy L. Raducan, Sabina D. Sánchez, Paul Barnouin, Olivier S. Rivkin, Andrew S. |
| author_facet | Kohout, Tomas Pajola, Maurizio Soini, Assi-Johanna Lucchetti, Alice Luttinen, Arto Duchêne, Alexia Murdoch, Naomi Luther, Robert Chabot, Nancy L. Raducan, Sabina D. Sánchez, Paul Barnouin, Olivier S. Rivkin, Andrew S. |
| contents | The ~200 m/s impact of a single 400-kg Bjurböle L/LL ordinary chondrite meteorite onto sea ice resulted in the catastrophic disruption of the projectile. This resulted in a significant fraction of decimeter-sized fragments that exhibit power law cumulative size and mass distributions. This size range is underrepresented in impact experiments and asteroid boulder studies. The Bjurböle projectile fragments share similarities in shape (sphericity, and roughness at small and large scale) with asteroid boulders. However, the mean aspect ratio (3D measurement) and apparent aspect ratio (2D measurement) of Bjurböle fragment is 0.83 and 0.77, respectively, indicating that Bjurböle fragments are more equidimensional compared to both fragments produced in smaller scale impact experiments and asteroid boulders. These differences may be attributed either to the fragment source (projectile vs. target), to the high porosity and low strength of Bjurböle, to the lower impact velocity compared with typical asteroid collision velocities, or potentially to fragment erosion during sea sediment penetration or cleaning. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_00379 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Impact disruption of Bjurböle porous chondritic projectile Kohout, Tomas Pajola, Maurizio Soini, Assi-Johanna Lucchetti, Alice Luttinen, Arto Duchêne, Alexia Murdoch, Naomi Luther, Robert Chabot, Nancy L. Raducan, Sabina D. Sánchez, Paul Barnouin, Olivier S. Rivkin, Andrew S. Earth and Planetary Astrophysics Geophysics The ~200 m/s impact of a single 400-kg Bjurböle L/LL ordinary chondrite meteorite onto sea ice resulted in the catastrophic disruption of the projectile. This resulted in a significant fraction of decimeter-sized fragments that exhibit power law cumulative size and mass distributions. This size range is underrepresented in impact experiments and asteroid boulder studies. The Bjurböle projectile fragments share similarities in shape (sphericity, and roughness at small and large scale) with asteroid boulders. However, the mean aspect ratio (3D measurement) and apparent aspect ratio (2D measurement) of Bjurböle fragment is 0.83 and 0.77, respectively, indicating that Bjurböle fragments are more equidimensional compared to both fragments produced in smaller scale impact experiments and asteroid boulders. These differences may be attributed either to the fragment source (projectile vs. target), to the high porosity and low strength of Bjurböle, to the lower impact velocity compared with typical asteroid collision velocities, or potentially to fragment erosion during sea sediment penetration or cleaning. |
| title | Impact disruption of Bjurböle porous chondritic projectile |
| topic | Earth and Planetary Astrophysics Geophysics |
| url | https://arxiv.org/abs/2406.00379 |