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Matthew S. Huber and Elizaveta Kovaleva
The Vredefort impact structure is among the oldest and largest impact structures preserved on Earth. An understanding of its key features can serve as a guide for learning about the development of basin-sized impact structures on Earth and other planetar...
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Kalle Kiik, Jüri Plado, Muddaramaiah Lingadevaru, Syed Hamim Jeelani and Mateusz Szyszka
The ground magnetic field of the Lonar impact crater (Maharashtra State, India) and its surrounding area was measured and studied utilizing 2.5-dimensional potential field modelling. Field data showed the crater depression is associated with a strong cir...
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Anna L. Mina, Michael F. Petrou and Konstantinos G. Trezos
The scope of this paper is to investigate the performance of ultra-high performance fiber reinforced concrete (UHPFRC) concrete slabs, under projectile impact. Mixture performance under impact loading was examined using bullets with 7.62 mm diameter and ...
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Oliver Campbell, Tom Blenkinsop, Oscar Gilbert and Lisa Mol
The shift of armed conflicts to more urbanised environments has increased the risk to cultural heritage sites. Small arms impacts are ubiquitous in these circumstances, yet the effects and mechanisms of damage caused are not well known. A sandstone targe...
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Ju Zhang, Pucun Bai, Changwang Yan, Shuguang Liu and Xiaoxiao Wang
Cement-based material is brittle and is easily damaged by an impact load with a few blows. The purpose of this paper is to study the relations between the impact resistance and tensile properties of cement-based materials reinforced by polyvinyl alcohol ...
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Pengfei Han, Qiguang He, Xiaowei Chen and He Lv
An asteroid impact can potentially destroy life on this planet. Therefore, asteroids should be prevented from impacting the Earth to impede severe disasters. Nuclear explosions are currently the only option to prevent an incoming asteroid impact when the...
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Martin D. Clark, Elizaveta Kovaleva, Matthew S. Huber, Francois Fourie and Chris Harris
Better characterization features borne from long-term crustal modification processes is essential for understanding the dynamics of large basin-forming impact structures on Earth. Within the deeply eroded 2.02 Ga Vredefort Impact Structure in South Afric...
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Mikael Tillberg, Magnus Ivarsson, Henrik Drake, Martin J. Whitehouse, Ellen Kooijman and Melanie Schmitt
Impact-generated hydrothermal systems have been suggested as favourable environments for deep microbial ecosystems on Earth, and possibly beyond. Fossil evidence from a handful of impact craters worldwide have been used to support this notion. However, a...
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Jifang Du, Yinqiu Zhang, Shuaifeng Wu, Yu Dong and Junwei Shi
Dynamic compaction (DC) is a ground treatment method that achieves soil densification effects using impact forces. The ground displacement of a crater induced by a hammer is often used for the determination of densification, but less attention has been p...
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Naser T. Burahmah and Lawrence H. Heilbronn
As humanity prepares for extended lunar exploration, understanding the radiation environment on the Moon is important for astronaut safety. This study utilized the Particle and Heavy-Ion Transport code System (PHITS), a stochastic Monte Carlo-based radia...
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Gabriel Ureta, Károly Németh, Felipe Aguilera and Rodrigo González
Maar volcanoes are monogenetic landforms whose craters cut below the pre-eruptive surface and are surrounded by a tephra ring. Both the maar crater and the surrounding tephra rim deposits are typically formed due to magma?water explosive interactions. No...
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Tjarda J. Roberts
Volcanic halogen emissions to the troposphere undergo a rapid plume chemistry that destroys ozone. Quantifying the impact of volcanic halogens on tropospheric ozone is challenging, only a few observations exist. This study presents measurements of ozone ...
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Tjarda J. Roberts
Volcanic halogen emissions to the troposphere undergo a rapid plume chemistry that destroys ozone. Quantifying the impact of volcanic halogens on tropospheric ozone is challenging, only a few observations exist. This study presents measurements of ozone ...
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Ah-Der Lin, Chi-Liang Kung, You-Qing Cao, Chao-Ming Hsu and Cheng-Yi Chen
This paper describes the use of a plasma electrolysis technique to apply a nanosilver coating to the surface of stainless steel to achieve hydrophobic properties. We propose an experimental reaction system, which includes stainless steel 316 as the two e...
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Frederick J. Swanson,Julia A. Jones,Charles M. Crisafulli,Antonio Lara
Pág. 359 - 391
The 2008-2009 eruption of Chaitén Volcano (Chile) involved a variety of volcanic and associated hydrologic processes that damaged nearby forests. These processes included coarse (gravel) and fine (silt to sand) tephra fall, a laterally directed blast, fl...
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James Geisbush and Samuel T. Ariaratnam
The consequences of failures from large-diameter water pipelines can be severe. Results can include significant property damage, adjacent damage to infrastructure such as roads and bridges resulting in transportation delays or shutdowns, adjacent structu...
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