Results 11 to 20 of about 40,134 (307)

Special Crater Types on Vesta and Ceres as Revealed by Dawn [PDF]

open access: yes, 2021
The exploration of two small planetary bodies by the Dawn mission revealed multifaced surfaces showing a diverse geology and surface features. Impact crater are the most distinctive features on these planetary bodies.
Krohn, Katrin, Katrin Krohn
core   +1 more source

Formation of Gas-Emission Craters in Northern West Siberia: Shallow Controls

open access: yesGeosciences, 2021
Gas-emission craters discovered in northern West Siberia may arise under a specific combination of shallow and deep-seated permafrost conditions. A formation model for such craters is suggested based on cryological and geological data from the Yamal ...
Evgeny Mikhailovich Chuvilin   +4 more
doaj   +1 more source

Full waveform tomographic images of the peak ring at the Chicxulub impact crater [PDF]

open access: yes, 2011
17/06/013 PDF version attached, OK to pub.Peak rings are a feature of large impact craters on the terrestrial planets and are generally believed to be formed from deeply buried rocks that are uplifted during crater formation.
Grieve, R. A. F.   +20 more
core   +1 more source

Updates to Concepts on Phreatomagmatic Maar-Diatremes and Their Pyroclastic Deposits

open access: yesFrontiers in Earth Science, 2017
Recent work is changing our understanding of phreatomagmatic maar-diatreme eruptions and resulting deposits. In previous models, explosions were often inferred to take place only at the base of a diatreme, with progressive downward migration due to a ...
Greg A. Valentine   +4 more
doaj   +1 more source

Improvement of Lunar Surface Dating Accuracy Utilizing Crater Degradation Model: A Case Study of the Chang’e-5 Sampling Area

open access: yesRemote Sensing, 2023
Taking the Chang’e-5 (CE-5) sampling area as an example, this study carried out an investigation on improving the crater size-frequency distribution (CSFD) dating accuracy of lunar surface geologic units based on the crater degradation model.
Feiyue Zhao, Wei Zuo, Chunlai Li
doaj   +1 more source

Complex of Geophysical Studies of the Seyakha Catastrophic Gas Blowout Crater on the Yamal Peninsula, Russian Arctic

open access: yesGeosciences, 2020
This article describes the main results of two Arctic expeditions in 2017–2018 to study the Seyakha Crater in the north of Western Siberia, Yamal Peninsula.
Vasily Bogoyavlensky   +3 more
doaj   +1 more source

Surrogate-based optimization of a cratered cylindrical hole to enhance film-cooling effectiveness

open access: yesJournal of Thermal Science and Technology, 2016
A cratered film-cooling hole was investigated to determine the effect of shape parameters on film-cooling performance, and shape of the hole was optimized to improve film-cooling effectiveness.
Jun-Hee KIM, Kwang-Yong KIM
doaj   +1 more source

Vision‐based crater and rock detection using a cascade decision forest

open access: yesIET Computer Vision, 2019
Both crater and rock detection are components of the autonomous landing and hazard avoidance technology (ALHAT) sensor suite, as craters and rocks represent the majority of landing hazards.
Yunfeng Yan, Donglian Qi, Chaoyong Li
doaj   +1 more source

Peningkatan kegiatan Gunung Api Tangkubanparahu Jawa Barat pada bulan April 2005

open access: yesIndonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol1no4.20063Tangkubanparahu is an active strato volcano located in West Java lying about 30 km to the north of Bandung City. Its crest is 2084 m above the sea level.
Isya Nurrahmat Dana   +4 more
doaj   +1 more source

Modeling of Material Removal Rate and Surface Roughness Generated during Electro-Discharge Machining

open access: yesMachines, 2019
This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM).
Amin Razeghiyadaki   +3 more
doaj   +1 more source

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