Results 121 to 130 of about 2,637 (244)

Meteoroid Bulk Density and Ceplecha Types

, 2017
The determination of asteroid bulk density is an important aspect of Near Earth Object (NEO) characterization. A fraction of meteoroids originate from asteroids (including some NEOs), thus in lieu of mutual perturbations, satellites, or expensive ...
Moser, D. E., Blaauw, R. C., Moorhead, A. V.   +2 more
core  

Determining impact angle from the spatial distribution of shock metamorphism: A case study of the Gosses Bluff (Tnorala) impact structure, Australia

Meteoritics &Planetary Science, EarlyView.
Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews, Auriol S. P. Rae, Thomas Kenkmann, Nicholas E. Timms, Aaron J. Cavosie, Marian B. Holness   +5 more
wiley   +1 more source

The meteoroid environment and structural reliability

, 1970
Meteoroid environment and structural ...
Cour-Palais, B. G.
core  

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Meteoroid flux at sub-meter scales is homogeneous across the Lunar nearside and farside

Communications Earth & Environment
The spatial heterogeneity of meteoroid impact flux has shaped the space weathering environment across the lunar surface, driving key evolutionary processes such as crater degradation, regolith gardening, and soil grain exposure.
Renrui Liu, Sizhe Zhao, Yi Xu, Qiquan Yang, Xiaoping Zhang, Chenkun Sun, Pengwei Luo, Rui Chen, Yanyan Xu, Xindong Meng, Jiahui Liu, Yun Qin, Yang Li   +12 more
doaj   +1 more source

Achondrites in meteor data: Spectra, dynamics, and physical properties of candidate aubrite and eucrite impactors

Astronomy & Astrophysics
Meteor spectroscopy presents new opportunities for investigating the diversity of small Solar System bodies and capturing the real distribution of present material types. In this work, we analyzed a sample of 180 higher-resolution meteor spectra from the
Matlovič P., Pisarčíková A., Pazderová V., Vörös T., Hlobik F., Devillepoix H. A. R., Borovička J., Paprskárová M., Deam S. E., Tóth J., Kornoš L., Paulech T., Zigo P.   +12 more
doaj   +1 more source

Nasa to launch second pegasus meteoroid satellite

, 1965
Second Pegasus meteoroid satellite launching by ...

core  

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

Meteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes, Wolf U. Reimold, Roger L. Gibson, Julia B. Curto Ma, Adolfo B. Silva, Natalia Hauser   +5 more
wiley   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Modeling Atmospheric Alteration on Titan: Hydrodynamics and Shock-induced Chemistry of Meteoroid Entry

The Astrophysical Journal
Meteoroid entry into planetary atmospheres generates bow shocks, resulting in high-temperature gas conditions that drive chemical reactions. In this paper, we perform three-dimensional hydrodynamic simulations of meteoroid entry using the Athena++ code ...
Ryushi Miyayama, Laura Kay Schaefer, Hiroshi Kobayashi, Andrea Zorzi   +3 more
doaj   +1 more source