Results 21 to 30 of about 223,457 (294)

The Alaskan Summer 2019 Extreme Heat Event: The Role of Anthropogenic Forcing, and Projections of the Increasing Risk of Occurrence

Earth's Future, 2021
Extreme heat occurred over Alaska in June–July 2019, posing risks to infrastructure, ecosystem, and human health. It is vital to improve our understanding of the causes of such events and the extent to which anthropogenic forcing may alter their ...
Sarah K. Weidman, Thomas L. Delworth, Sarah B. Kapnick, William F. Cooke   +3 more
doaj   +1 more source

Resonant periodic orbits in the exoplanetary systems

, 2013
The planetary dynamics of $4/3$, $3/2$, $5/2$, $3/1$ and $4/1$ mean motion resonances is studied by using the model of the general three body problem in a rotating frame and by determining families of periodic orbits for each resonance.
Antoniadou, K. I., Voyatzis, G.
core   +1 more source

Design and Research Co-Simulation Platform of Navigation and Dynamics on Planetary Rovers

Xibei Gongye Daxue Xuebao, 2019
The overall design idea of simulation platform of the planetary rover coupling navigation and dynamics is proposed to address the dilemma faced in the design of a navigation control system for Mars and other planetary exploration tasks.

doaj   +1 more source

DYNAMICS OF PLANETARY SYSTEMS IN STAR CLUSTERS [PDF]

The Astrophysical Journal, 2009
57 pages, 14 figures, 4 tables, major revision by authors, accepted for publication at the Astrophysical Journal (ApJ)
Spurzem, R., Giersz, M., Heggie, D. C., Lin, D. N. C.   +3 more
openaire   +2 more sources

Quasi-Two-Dimensional Dynamics of Plasmas and Fluids [PDF]

, 1994
In the lowest order of approximation quasi-twa-dimensional dynamics of planetary atmospheres and of plasmas in a magnetic field can be described by a common convective vortex equation, the Charney and Hasegawa-Mirna (CHM) equation. In contrast to the two-
Akira Hasegawa, Antipov S. V., Antipov S. V., Antonova R. A., Antonova R. A., Balk A. M., Balk A. M., Charney J. G., Dyanchenko A. I., Ertel H., Gordin V. A., Gordin V. A., Horton W., Jovanović D., Kadomtsev B. B., Kandrup H. E., Kolmogorov A. N., Laedke E. W., Laedke E. W., Larichev V. D., Larichev V. D., Mazzucato E., Novakovskii S. V., Nycander J., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Piterbarg L. I., Rudakov L. I., Shapiro V. D., Stewart H. J., Surko C. M., Tasso H., Wakatani M., Waltz R. E., Wendell Horton, Williams G. P.   +38 more
core   +1 more source

Dynamic modeling and analysis of high-speed flexible planetary gear transmission systems

Alexandria Engineering Journal, 2023
Modern planetary gear transmissions are often made with flexible components and operated at high or varying speed. Despite advances in understanding their dynamic performance, they remain vulnerable to problems leading—in some cases—to subsequent system ...
Changzhao Liu, Cong Yang, Yu Zhao, Jian Luo, Xianglong Chen   +4 more
doaj   +1 more source

Equilibria in the secular, non-coplanar two-planet problem

, 2009
We investigate the secular dynamics of a planetary system composed of the parent star and two massive planets in mutually inclined orbits. The dynamics are investigated in wide ranges of semi-major axes ratios (0.1-0.667), and planetary masses ratios (0 ...
Adams, Brouwer, Brumberg, Butler, Cezary Migaszewski, Fabrycky, Ferraz-Mello, Ferrer, Fischer, Fischer, Ford, Goździewski, Goździewski, Goździewski, Goździewski, Innanen, Ji, Khalil, Kinoshita, Kozai, Krasinsky, Krzysztof Goździewski, Laskar, Laskar, Lee, Libert, Libert, Libert, Lidov, Lidov, Markeev, Meyer, Michtchenko, Michtchenko, Michtchenko, Migaszewski, Migaszewski, Migaszewski, Miller, Morbidelli, Murray, Press, Rodríguez, Sokolskii, Thomas, Thommes, Veras, Veras, Wright   +48 more
core   +1 more source

Emplacement of the Argyle diamond deposit into an ancient rift zone triggered by supercontinent breakup

Nature Communications, 2023
Argyle is the world’s largest source of natural diamonds, yet one of only a few economic deposits hosted in a Paleoproterozoic orogen. The geodynamic triggers responsible for its alkaline ultramafic volcanic host are unknown. Here we show, using U-Pb and
Hugo K. H. Olierook, Denis Fougerouse, Luc S. Doucet, Yebo Liu, Murray J. Rayner, Martin Danišík, Daniel J. Condon, Brent I. A. McInnes, A. Lynton Jaques, Noreen J. Evans, Bradley J. McDonald, Zheng-Xiang Li, Christopher L. Kirkland, Celia Mayers, Michael T. D. Wingate   +14 more
doaj   +1 more source

Orbital forcing of ice sheets during snowball Earth

Nature Communications, 2021
Reconciling the Snowball Earth hypothesis with sedimentological cyclicity has been a persistent challenge. A new cyclostratigraphic climate record for a Cryogenian banded iron formation in Australia provides evidence for orbital forcing of ice sheet ...
Ross N. Mitchell, Thomas M. Gernon, Grant M. Cox, Adam R. Nordsvan, Uwe Kirscher, Chuang Xuan, Yebo Liu, Xu Liu, Xiaofang He   +8 more
doaj   +1 more source

Stellar wind bubbles around WR and [WR] stars [PDF]

, 2002
We study the dynamics of stellar wind bubbles around hydrogen-deficient stars using numerical simulations with time- and ion dependent cooling. We consider two types of hydrogen-deficient stars, massive WR stars, producing Ring Nebulae, and low mass [WR]
Abbott, Acker, Balick, Cappa, Chevalier, Chu, Cox, Cox, Dalgarno, Dwarkadas, Frank, G. Mellema, Gaetz, Garcia-Segura, Garcia-Segura, Garcia-Segura, Gould, Gronenschild, Górny, Herwig, Kahn, Karzas, Koesterke, Koo, Koo, Mellema, Mellema, Mellema, P. Lundqvist, Pittard, Plewa, Raga, Raymond, Roe, Sutherland, Treffers, Van Buren, Wrigge   +37 more
core   +3 more sources