Zobrazeno 1 - 10
of 29
pro vyhledávání: '"David P. Hartley"'
Autor:
Richard E. Denton, Phoebe M. Tengdin, David P. Hartley, Jerry Goldstein, Jinmyoung Lee, Kazue Takahashi
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
The high density plasmasphere in the magnetosphere is often separated from a lower density region outside of the plasmasphere, called the plasmatrough, by a sharp gradient in electron density called the plasmapause. Here we use plasmapause events ide
Externí odkaz:
https://doaj.org/article/76174a3ad4e241c8be8d4ccf9ce25890
Autor:
Oliver Allanson, Donglai Ma, Adnane Osmane, Jay M. Albert, Jacob Bortnik, Clare E. J. Watt, Sandra C. Chapman, Joseph Spencer, Daniel J. Ratliff, Nigel P. Meredith, Thomas Elsden, Thomas Neukirch, David P. Hartley, Rachel Black, Nicholas W. Watkins, Sean Elvidge
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
Quasilinear theories have been shown to well describe a range of transport phenomena in magnetospheric, space, astrophysical and laboratory plasma “weak turbulence” scenarios. It is well known that the resonant diffusion quasilinear theory for th
Externí odkaz:
https://doaj.org/article/6412a26bbcba4276a29df5ad318ee67c
Autor:
Richard E. Denton, Kazue Takahashi, Kyungguk Min, David P. Hartley, Yukitoshi Nishimura, Matthew C. Digman
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
Analytical models for magnetospheric mass density, ρm, and average ion mass, M, were created from a database of ρm and electron density, ne, values from six spacecraft missions by making use of the Eureqa nonlinear genetic regression algorithm. All
Externí odkaz:
https://doaj.org/article/b0b0c6335c20430f89bd518d9ce228da
Autor:
Jinxing Li, Jacob Bortnik, Xin An, Wen Li, Vassilis Angelopoulos, Richard M. Thorne, Christopher T. Russell, Binbin Ni, Xiaochen Shen, William S. Kurth, George B. Hospodarsky, David P. Hartley, Herbert O. Funsten, Harlan E. Spence, Daniel N. Baker
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Chorus waves are crucial on radiation belt dynamics in the space of magnetized planets. Here, the authors show that initially excited single-band chorus waves can quickly accelerate medium energy electrons, and divide the anisotropic electrons into l
Externí odkaz:
https://doaj.org/article/82d736e0eeef4b3784d92fe259a73ac3
Energetic electron precipitation (EEP) associated with pulsating aurora can transfer greater than 30 keV electrons from the outer radiation belt region into the upper atmosphere and can deplete atmospheric ozone via collisions that produce NOx and HO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::840c2094c0d052609741f733348181b0
https://doi.org/10.22541/essoar.168500256.68538149/v1
https://doi.org/10.22541/essoar.168500256.68538149/v1
Autor:
David P. Hartley, Ivar Christopher, Lunjin Chen, Ondrej Santolik, Craig Kletzing, Matthew Argall, Narges Ahmadi
The dynamics of Earth's outer electron radiation belt is, in part, driven by interactions with whistler-mode chorus waves. Chorus can cause rapid acceleration of electrons up to relativistic energies, as well as drive precipitation of particles into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c18789b210b9daadf000b4a820f87e40
https://doi.org/10.5194/egusphere-egu23-7785
https://doi.org/10.5194/egusphere-egu23-7785
Autor:
Jinxing Li, Jacob Bortnik, Wen Li, Xin An, Larry R. Lyons, William S. Kurth, George B. Hospodarsky, David P. Hartley, Geoffrey D. Reeves, Herbert O. Funsten, J. Bernard Blake, Harlan Spence, Daniel N. Baker
Publikováno v:
Geophysical Research Letters. 49
Publikováno v:
Electronic Journal of Differential Equations, Vol 2007, Iss 115, Pp 1-12 (2007)
We present and explore a novel mathematical model of the epidemiology of Rift Valley Fever (RVF). RVF is an Old World, mosquito-borne disease affecting both livestock and humans. The model is an ordinary differential equation model for two population
Externí odkaz:
https://doaj.org/article/0ad776a8d3f7411dbfedb12b85fd490e
Publikováno v:
Emerging Infectious Diseases, Vol 9, Iss 10, Pp 1197-1204 (2003)
To facilitate rapid detection of a future bioterrorist attack, an increasing number of public health departments are investing in new surveillance systems that target the early manifestations of bioterrorism-related disease. Whether this approach is
Externí odkaz:
https://doaj.org/article/5d5c6f0d71594f159481e8a61f57b645
Autor:
Philippe Barboza, Laetitia Vaillant, Yann Le Strat, David M Hartley, Noele P Nelson, Abla Mawudeku, Lawrence C Madoff, Jens P Linge, Nigel Collier, John S Brownstein, Pascal Astagneau
Publikováno v:
PLoS ONE, Vol 9, Iss 3, p e90536 (2014)
BACKGROUND: Internet-based biosurveillance systems have been developed to detect health threats using information available on the Internet, but system performance has not been assessed relative to end-user needs and perspectives. METHOD AND FINDINGS
Externí odkaz:
https://doaj.org/article/2f7403c7b1e442f1b426daf4d2563c5b