Results 11 to 20 of about 2,849,371 (302)

Self Similar Shocks in Atmospheric Mass Loss Due to Planetary Collisions

open access: yesAtmosphere, 2020
We present a mathematical model for the propagation of the shock waves that occur during planetary collisions. Such collisions are thought to occur during the formation of terrestrial planets, and they have the potential to erode the planet’s atmosphere.
Almog Yalinewich, Andrey Remorov
doaj   +2 more sources

Theoretical models of planetary system formation II. Post-formation evolution [PDF]

open access: yes, 2015
Aims. We extend the results of planetary formation synthesis by computing the long-term evolution of synthetic systems from the clearing of the gas disk into the dynamical evolution phase. Methods.
Pfyffer, Samuel Moses   +3 more
core   +4 more sources

Spatial- and temporal-interpolations for efficient hybrid wave numerical simulations

open access: yesFrontiers in Earth Science, 2022
The hybrid simulation method is developed for simulating wave propagation only in a localized heterogeneous media with hybrid inputs obtained once for all from a known reference model.
Hao Shen   +7 more
doaj   +1 more source

Summary of the Third International Planetary Dunes Workshop: Remote Sensing and Image Analysis of Planetary Dunes, Flagstaff, Arizona, USA, June 12-15, 2012 [PDF]

open access: yes, 2013
The Third International Planetary Dunes Workshop took place in Flagstaff, AZ, USA during June 12-15, 2012. This meeting brought together a diverse group of researchers to discuss recent advances in terrestrial and planetary research on aeolian bedforms.
Yizhaq, Hezi   +24 more
core   +1 more source

Surveying Planetary Nebulae Central Stars for Close Binaries: Constraining Evolution of Central Stars Based on Binary Parameters

open access: yesGalaxies, 2018
The increase in discovered close binary central stars of planetary nebulae is leading to a sufficiently large sample to begin to make broader conclusions about the effect of close binary stars on common envelope evolution and planetary nebula formation ...
Todd Hillwig
doaj   +1 more source

Optimization of planetary gear of onboard gearbox using the method of differential evolution [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2020
Problem. Further modernization of combat vehicles, associated with the installation of additional equipment, requires the use of more powerful engines, which leads to increased loads on parts and components of the onboard gearbox.
Klitnoy Viktor   +2 more
doaj   +1 more source

Development and prospect of planetary optical remote sensing at Lenghu

open access: yes地球与行星物理论评, 2021
Planetary science is the one among the frontiers of science in the world and also is one of the key components of the development strategy of science and technology in China, which reflects the state of national natural science and the comprehensive ...
Fei He, Zhonghua Yao, Yong Wei
doaj   +1 more source

A specimen of Paralycoptera Chang & Chou 1977 (Teleostei: Osteoglossoidei) from Hong Kong (China) with a potential Late Jurassic age that extends the temporal and geographical range of the genus [PDF]

open access: yesPeerJ, 2015
We describe a Mesozoic fish Paralycoptera sp. (Teleostei: Osteoglossoidei), on the basis of a postcranial skeleton collected from the volcaniclastic mudstones of the Lai Chi Chong Formation of Hong Kong, China.
Tze-Kei Tse   +2 more
doaj   +2 more sources

Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations [PDF]

open access: yes, 2003
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as ...
Killworth, Peter D.   +8 more
core   +1 more source

Apophis planetary defense campaign [PDF]

open access: yes, 2022
We describe results of a planetary defense exercise conducted during the close approach to Earth by the near-Earth asteroid (99942) Apophis during 2020 December–2021 March. The planetary defense community has been conducting observational campaigns since
Mastaler, Ron A.   +329 more
core   +1 more source

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