Results 21 to 30 of about 83,326 (348)

Determination of the Size and Depth of Craters on the Moon

Center for Educational Policy Studies Journal, 2018
Experimental work in the research of astronomical phenomena is often difficult or even impossible because of long-lasting processes or too distant objects and correspondingly too expensive equipment.
Vladimir Grubelnik, Marko Marhl, Robert Repnik   +2 more
doaj   +1 more source

A Machine Learning Approach to Crater Classification from Topographic Data

Remote Sensing, 2019
Craters contain important information on geological history and have been widely used for dating absolute age and reconstructing impact history. The impact process results in a lot of ejected fragments and these fragments may form secondary craters ...
Qiangyi Liu, Weiming Cheng, Guangjian Yan, Yunliang Zhao, Jianzhong Liu   +4 more
doaj   +1 more source

Pitted terrains on (1) Ceres and implications for shallow subsurface volatile distribution

Geophysical Research Letters, 2017
Prior to the arrival of the Dawn spacecraft at Ceres, the dwarf planet was anticipated to be ice‐rich. Searches for morphological features related to ice have been ongoing during Dawn's mission at Ceres.
H. G. Sizemore, T. Platz, N. Schorghofer, T. H. Prettyman, M. C. De Sanctis, D. A. Crown, N. Schmedemann, A. Neesemann, T. Kneissl, S. Marchi, P. M. Schenk, M. T. Bland, B. E. Schmidt, K. H. G. Hughson, F. Tosi, F. Zambon, S. C. Mest, R. A. Yingst, D. A. Williams, C. T. Russell, C. A. Raymond   +20 more
doaj   +1 more source

Magnetic Field Signatures of Intermediate-sized Impact Craters on Mars

The Astrophysical Journal, 2023
Magnetic field signatures over impact craters provide constraints for the history of the Martian dynamo. Due to limitations of the spatial resolution of magnetic field models, previous studies primarily focused on large impact craters (mostly ≥ 500 km in
Kuixiang Zhang, Aimin Du, Can Huang, Hao Luo, Lin Tian, Yasong Ge, Jipeng Qin, Lei Wang   +7 more
doaj   +1 more source

Morphometric Analysis of Pluto’s Impact Craters

Remote Sensing, 2021
The scope of this work is to carry out a morphometric analysis of Pluto’s impact craters. A global Pluto digital elevation model (DEM) with a resolution of 300 m/px, created from stereoscopic pairs obtained by the New Horizons Mission, was used to ...
Caio Vidaurre Nassif Villaça, Alvaro Penteado Crósta, Carlos Henrique Grohmann   +2 more
doaj   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Source(s) of the Smooth Caloris Exterior Plains on Mercury: Mapping, Remote Analyses, and Scenarios for Future Testing with BepiColombo Data

Remote Sensing
Mercury hosts widespread smooth plains that are concentrated in the Caloris impact basin, in an annulus surrounding the Caloris basin, and in the adjacent northern smooth plains.
Keenan B. Golder, Bradley J. Thomson, Lillian R. Ostrach, Devon M. Burr, Joshua P. Emery, Harald Hiesinger   +5 more
doaj   +1 more source

Self-Secondaries Formed by Cold Spot Craters on the Moon

Remote Sensing, 2021
Self-secondaries are a population of background secondaries, and they have been observed on top of impact melt and ballistically emplaced ejecta deposits on various planetary bodies.
Yiren Chang, Zhiyong Xiao, Yang Liu, Jun Cui   +3 more
doaj   +1 more source

The effect of the oceans on the terrestrial crater size-frequency distribution: Insight from numerical modeling

, 2007
From the proceedings of the Workshop on Impact Craters as Indicators for Planetary Environmental Evolution and Astrobiology held in June 2006 in Östersund, Sweden.On Earth, oceanic impacts are twice as likely to occur as continental impacts, yet the ...
Amsden, Artemieva, Artemieva, Baldwin, Bland, Bland, Bland, Bottke, Collins, Collins, Collins, Collins, Dalwigk, Dence, Gault, Grieve, Halliday, Ivanov, Ivanov, Ivanov, Ivanov, Kyte, Melosh, Melosh, Nemtchinov, O'Keefe, Oberbeck, Ormö, Ormö, Ormö, Poag, Poag, Schmidt, Shuvalov, Shuvalov, Shuvalov, Shuvalov, Wünnemann, Wünnemann, Wünnemann, Wünnemann   +40 more
core   +1 more source