Search Results - "MANN, Ian R"

Analytic expressions for ULF wave radiation belt radial diffusion coefficients by Ozeke, Louis G., Mann, Ian R., Murphy, Kyle R., Jonathan Rae, I., Milling, David K.

“…We present analytic expressions for ULF wave‐derived radiation belt radial diffusion coefficients, as a function of L and Kp, which can easily be incorporated…”
Get full text

The Combined Influence of Lower Band Chorus and ULF Waves on Radiation Belt Electron Fluxes at Individual L‐Shells by Simms, Laura E., Engebretson, Mark J., Rodger, Craig J., Dimitrakoudis, Stavros, Mann, Ian. R., Chi, Peter J.

“…We investigate the timing and relative influence of VLF in the chorus frequency range observed by the DEMETER spacecraft and ULF wave activity from ground…”
Get full text

On the Close Correspondence Between Storm Time ULF Wave Power and the POES VLF Chorus Wave Amplitude Proxy by Dimitrakoudis, Stavros, Mann, Ian R.

“…Ground‐based Pc5 ultralow frequency (ULF) wave power in multiple ground‐based meridians is compared to the very low frequency (VLF) wave amplitude proxy,…”
Get full text

Understanding space weather to shield society: A global road map for 2015–2025 commissioned by COSPAR and ILWS by Schrijver, Carolus J., Kauristie, Kirsti, Aylward, Alan D., Denardini, Clezio M., Gibson, Sarah E., Glover, Alexi, Gopalswamy, Nat, Grande, Manuel, Hapgood, Mike, Heynderickx, Daniel, Jakowski, Norbert, Kalegaev, Vladimir V., Lapenta, Giovanni, Linker, Jon A., Liu, Siqing, Mandrini, Cristina H., Mann, Ian R., Nagatsuma, Tsutomu, Nandy, Dibyendu, Obara, Takahiro, Paul O’Brien, T., Onsager, Terrance, Opgenoorth, Hermann J., Terkildsen, Michael, Valladares, Cesar E., Vilmer, Nicole

“…There is a growing appreciation that the environmental conditions that we call space weather impact the technological infrastructure that powers the coupled…”
Get full text

Tail Reconnection Triggering Substorm Onset by Angelopoulos, Vassilis, McFadden, James P., Larson, Davin, Carlson, Charles W., Mende, Stephen B., Frey, Harald, Phan, Tai, Sibeck, David G., Glassmeier, Karl-Heinz, Auster, Uli, Donovan, Eric, Mann, Ian R., Rae, I. Jonathan, Russell, Christopher T., Runov, Andrei, Zhou, Xu-Zhi, Kepko, Larry

“…Magnetospheric substorms explosively release solar wind energy previously stored in Earth's magnetotail, encompassing the entire magnetosphere and producing…”
Get full text

Ultra‐relativistic radiation belt extinction and ULF wave radial diffusion: Modeling the September 2014 extended dropout event by Ozeke, Louis G., Mann, Ian R., Murphy, Kyle R., Sibeck, David G., Baker, Daniel N.

“…In September 2014 an unusually long‐lasting (≳10 days) ultra‐relativistic electron flux depletion occurred in the outer radiation belt despite ongoing solar…”
Get full text

Multi‐Event Study of Simultaneous Observations of Isolated Proton Auroras at Subauroral Latitudes Using Ground All‐Sky Imagers and the Van Allen Probes by Nakamura, Kohki, Shiokawa, Kazuo, Nosé, Masahito, Nagatsuma, Tsutomu, Sakaguchi, Kaori, Spence, Harlan, Reeves, Geoff, Funsten, Herbert O., MacDowall, Robert, Smith, Charles, Wygant, John, Bonnell, John, Mann, Ian R.

“…Isolated proton auroras (IPAs) appearing at subauroral latitudes are generated by energetic protons precipitating from the magnetosphere through interaction…”
Get full text

Large‐Scale Ducting of Pc1 Pulsations Observed by Swarm Satellites and Multiple Ground Networks by Kim, Hyangpyo, Hwang, Junga, Park, Jaeheung, Miyashita, Yukinaga, Shiokawa, Kazuo, Mann, Ian R., Raita, Tero, Lee, Jaejin

“…Low Earth orbit satellites frequently encounter Pc1 pulsations, but most have been observed with limited latitudinal extent or short lifetime. In this study we…”
Get full text

Explaining the apparent impenetrable barrier to ultra-relativistic electrons in the outer Van Allen belt by Ozeke, Louis G., Mann, Ian R., Murphy, Kyle R., Degeling, Alex W., Claudepierre, Seth G., Spence, Harlan E.

“…Recent observations have shown the existence of an apparent impenetrable barrier at the inner edge of the ultra-relativistic outer electron radiation belt…”
Get full text

Confirmation of EMIC wave‐driven relativistic electron precipitation by Hendry, Aaron T., Rodger, Craig J., Clilverd, Mark A., Engebretson, Mark J., Mann, Ian R., Lessard, Marc R., Raita, Tero, Milling, David K.

“…Electromagnetic ion cyclotron (EMIC) waves are believed to be an important source of pitch angle scattering driven relativistic electron loss from the…”
Get full text

The Role of Localized Compressional Ultra‐low Frequency Waves in Energetic Electron Precipitation by Rae, I. Jonathan, Murphy, Kyle R., Watt, Clare E. J., Halford, Alexa J., Mann, Ian R., Ozeke, Louis G., Sibeck, David G., Clilverd, Mark A., Rodger, Craig J., Degeling, Alex W., Forsyth, Colin, Singer, Howard J.

“…Typically, ultra‐low frequency (ULF) waves have historically been invoked for radial diffusive transport leading to acceleration and loss of outer radiation…”
Get full text

ULF wave derived radiation belt radial diffusion coefficients by Ozeke, Louis G., Mann, Ian R., Murphy, Kyle R., Rae, I. Jonathan, Milling, David K., Elkington, Scot R., Chan, Anthony A., Singer, Howard J.

“…Waves in the ultra‐low‐frequency (ULF) band have frequencies which can be drift resonant with electrons in the outer radiation belt, suggesting the potential…”
Get full text

Discovery of the action of a geophysical synchrotron in the Earth’s Van Allen radiation belts by Mann, Ian R., Lee, E. A., Claudepierre, S. G., Fennell, J. F., Degeling, A., Rae, I. J., Baker, D. N., Reeves, G. D., Spence, H. E., Ozeke, L. G., Rankin, R., Milling, D. K., Kale, A., Friedel, R. H. W., Honary, F.

“…Although the Earth’s Van Allen radiation belts were discovered over 50 years ago, the dominant processes responsible for relativistic electron acceleration,…”
Get full text

The detailed spatial structure of field-aligned currents comprising the substorm current wedge by Murphy, Kyle R., Mann, Ian R., Rae, I. Jonathan, Waters, Colin L., Frey, Harald U., Kale, Andy, Singer, Howard J., Anderson, Brian J., Korth, Haje

“…We present a comprehensive two‐dimensional view of the field‐aligned currents (FACs) during the late growth and expansion phases for three isolated substorms…”
Get full text

Accurately specifying storm-time ULF wave radial diffusion in the radiation belts by Dimitrakoudis, Stavros, Mann, Ian R., Balasis, Georgios, Papadimitriou, Constantinos, Anastasiadis, Anastasios, Daglis, Ioannis A.

“…Ultralow frequency (ULF) waves can contribute to the transport, acceleration, and loss of electrons in the radiation belts through inward and outward…”
Get full text

Energetic Electron and Proton Interactions with Pc5 Ultra Low Frequency (ULF) Waves during the Great Geomagnetic Storm of 15–16 July 2000 by Lee, Eunah, Mann, Ian R., Ozeke, Louis G.

“…The dynamics of the outer zone radiation belt has received a lot of attention mainly due to the correlation between the occurrence of enhancing relativistic…”
Get full text

Imprints of impulse-excited hydromagnetic waves on electrons in the Van Allen radiation belts by Zhou, Xu-Zhi, Wang, Zi-Han, Zong, Qiu-Gang, Claudepierre, Seth G., Mann, Ian R., Kivelson, Margaret G., Angelopoulos, Vassilis, Hao, Yi-Xin, Wang, Yong-Fu, Pu, Zu-Yin

“…Ultralow frequency electromagnetic oscillations, interpreted as standing hydromagnetic waves in the magnetosphere, are a major energy source that accelerates…”
Get full text

Ground-based magnetometer determination of in situ Pc4-5 ULF electric field wave spectra as a function of solar wind speed by Rae, I. Jonathan, Mann, Ian R., Murphy, Kyle R., Ozeke, Louis G., Milling, David K., Chan, Anthony A., Elkington, Scot R., Honary, Farideh

“…We present a statistical characterization of ground‐based ultra‐low‐frequency (∼1–15 mHz) magnetic wave power spectral densities (PSDs) as a function of…”
Get full text

Inner magnetospheric onset preceding reconnection and tail dynamics during substorms: Can substorms initiate in two different regions? by Murphy, Kyle R., Mann, Ian R., Rae, I. Jonathan, Walsh, Andrew P., Frey, Harald U.

“…We present a detailed ground‐based and in situ examination of two substorms on 9 April 2011 providing one of the most detailed observations of a series of…”
Get full text

Energetic Electron and Proton Interactions with Pc5 Ultra Low Frequency (ULF) Waves during the Great Geomagnetic Storm of 15-16 July 2000 by Lee, Eunah, Mann, Ian R, Ozeke, Louis G

“…The dynamics of the outer zone radiation belt has received a lot of attention mainly due to the correlation between the occurrence of enhancing relativistic…”
Get full text