Search Results - "Watt, Clare E J"

The correlation of ULF waves and auroral intensity before, during and after substorm expansion phase onset by Rae, I. Jonathan, Watt, Clare E. J., Murphy, Kyle R., Frey, Harald U., Ozeke, Louis G., Milling, David K., Mann, Ian R.

“…We present case studies of the evolution of Ultra‐Low Frequency (ULF) magnetic wave amplitudes and auroral intensity through the late growth phase and the…”
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Automated determination of auroral breakup during the substorm expansion phase using all-sky imager data by Murphy, Kyle R., Miles, David M., Watt, Clare E. J., Rae, I. Jonathan, Mann, Ian R., Frey, Harald U.

“…This paper describes a novel method for quantitatively and routinely identifying auroral breakup following substorm onset using the Time History of Events and…”
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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…”
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Determining the Mode, Frequency, and Azimuthal Wave Number of ULF Waves During a HSS and Moderate Geomagnetic Storm by Murphy, Kyle R., Inglis, Andrew R., Sibeck, David G., Rae, I. Jonathan, Silveira, Marcos, Plaschke, Ferdinand, Claudepierre, Seth G., Nakamura, Rumi

“…Ultralow frequency (ULF) waves play a fundamental role in the dynamics of the inner magnetosphere and outer radiation belt during geomagnetic storms. Broadband…”
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Using ultra-low frequency waves and their characteristics to diagnose key physics of substorm onset by Rae, I. J., Murphy, K. R., Watt, Clare E. J., Mann, Ian R., Yao, Zhonghua, Kalmoni, Nadine M. E., Forsyth, Colin, Milling, David K.

“…Substorm onset is marked in the ionosphere by the sudden brightening of an existing auroral arc or the creation of a new auroral arc. Also present is the…”
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Accurately Characterizing the Importance of Wave-Particle Interactions in Radiation Belt Dynamics: The Pitfalls of Statistical Wave Representations by Murphy, Kyle R., Mann, Ian R., Rae, I. Jonathan, Sibeck, David G., Watt, Clare E. J.

“…Wave-particle interactions play a crucial role in energetic particle dynamics in the Earths radiation belts. However, the relative importance of different wave…”
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Reply to comment by K. Liou and Y.-L. Zhang on “Wavelet-based ULF wave diagnosis of substorm expansion phase onset” by Murphy, Kyle R., Rae, I. Jonathan, Mann, Ian R., Walsh, Andrew P., Milling, David K., Watt, Clare E. J., Ozeke, Louis, Frey, Harald U., Angelopoulos, Vassilis, Russell, Christopher T.

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The challenge to understand the zoo of particle transport regimes during resonant wave-particle interactions for given survey-mode wave spectra by Allanson, Oliver, Ma, Donglai, Osmane, Adnane, Albert, Jay M., Bortnik, Jacob, Watt, Clare E. J., Chapman, Sandra C., Spencer, Joseph, Ratliff, Daniel J., Meredith, Nigel P., Elsden, Thomas, Neukirch, Thomas, Hartley, David P., Black, Rachel, Watkins, Nicholas W., Elvidge, Sean

“…Quasilinear theories have been shown to well describe a range of transport phenomena in magnetospheric, space, astrophysical and laboratory plasma “weak…”
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Contrasting the responses of three different ground-based instruments to energetic electron precipitation by Rodger, Craig J., Clilverd, Mark A., Kavanagh, Andrew J., Watt, Clare E. J., Verronen, Pekka T., Raita, Tero

“…In order to make best use of the opportunities provided by space missions such as the Radiation Belt Storm Probes, we determine the response of complementary…”
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Near-Earth initiation of a terrestrial substorm by Rae, I. Jonathan, Mann, Ian R., Angelopoulos, Vassilis, Murphy, Kyle R., Milling, David K., Kale, Andy, Frey, Harald U., Rostoker, Gordon, Russell, Christopher T., Watt, Clare E. J., Engebretson, Mark J., Moldwin, Mark B., Mende, Stephen B., Singer, Howard J., Donovan, Eric F.

“…Despite the characterization of the auroral substorm more than 40 years ago, controversy still surrounds the processes triggering substorm onset initiation…”
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Equator-S observations of drift mirror mode waves in the dawnside magnetosphere by Rae, I. Jonathan, Mann, Ian R., Watt, Clare E. J., Kistler, Lynn M., Baumjohann, Wolfgang

“…The mirror mode is a plasma instability that is typically excited in high‐beta plasmas where there is significant pressure anisotropy and is most commonly…”
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Timing and localization of ionospheric signatures associated with substorm expansion phase onset by Rae, I. Jonathan, Mann, Ian R., Murphy, Kyle R., Milling, David K., Parent, Adrienne, Angelopoulos, Vassilis, Frey, Harald U., Kale, Andy, Watt, Clare E. J., Mende, Stephen B., Russell, Christopher T.

“…In this paper, we present case studies of the optical and magnetic signatures of the characteristics of the first minute of substorm expansion phase onset…”
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Wavelet-based ULF wave diagnosis of substorm expansion phase onset by Murphy, Kyle R., Rae, I. Jonathan, Mann, Ian R., Milling, David K., Watt, Clare E. J., Ozeke, Louis, Frey, Harald U., Angelopoulos, Vassilis, Russell, Christopher T.

“…Using a discrete wavelet transform with a Meyer wavelet basis, we present a new quantitative algorithm for determining the onset time of Pi1 and Pi2 ULF waves…”
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Comment on "Formation of substorm Pi2: A coherent response to auroral streamers and currents" by Y. Nishimura et al by Rae, I. Jonathan, Murphy, Kyle R., Miles, David M., Watt, Clare E. J., Mann, Ian R.

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Effects of Plasma Density on the Spatial and Temporal Scale Sizes of Plasmaspheric Hiss by Zhang, Shuai, Rae, I. Jonathan, Liu, Kaijun, Watt, Clare E. J., Shi, Quanqi, Tian, Anmin, Degeling, Alexander W., Guo, Ruilong, Wang, Mengmeng, Shen, Xiao‐Chen, Yao, Fei, Li, Jing chun

“…The effects of plasma density on the plasmaspheric hiss amplitude and its spatial and temporal scale sizes are investigated using data from Van Allen Probes A…”
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Electron trapping in shear Alfvén waves that power the aurora by Watt, Clare E J, Rankin, Robert

“…Results from 1D Vlasov drift-kinetic plasma simulations reveal how and where auroral electrons are accelerated along Earth's geomagnetic field. In the warm…”
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Determining the Global Scale Size of Chorus Waves in the Magnetosphere by Zhang, Shuai, Rae, I. Jonathan, Watt, Clare E. J., Degeling, Alexander W., Tian, Anmin, Shi, Quanqi, Shen, Xiao‐Chen, Yao, Shutao, Guo, Ruilong, Wang, Mengmeng, Zhu, Xiaoqiong, Wang, Huizi

“…Chorus waves outside the plasmapause influence the Earth's radiation belt dynamics by interacting with energetic electrons via cyclotron and Landau resonance…”
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The parameterization of wave‐particle interactions in the Outer Radiation Belt by Watt, Clare E. J., Rae, I. J., Murphy, K. R., Anekallu, C., Bentley, S. N., Forsyth, C.

“…We explore the use of mean value empirical wave models in diffusion models of the Outer Radiation Belt. We show that magnetospheric wave power is not normally…”
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How Do Ultra‐Low Frequency Waves Access the Inner Magnetosphere During Geomagnetic Storms? by Rae, I. Jonathan, Murphy, Kyle R., Watt, Clare E.J., Sandhu, Jasmine K., Georgiou, Marina, Degeling, Alex W., Forsyth, Colin, Bentley, Sarah N., Staples, Frances A., Shi, Quanqi

“…Wave‐particle interactions play a key role in radiation belt dynamics. Traditionally, ultra‐low frequency (ULF) wave‐particle interaction is parameterized…”
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Temporal variability of quasi-linear pitch-angle diffusion by Watt, Clare E. J., Allison, Hayley J., Bentley, Sarah N., Thompson, Rhys L., Rae, I. Jonathan, Allanson, Oliver, Meredith, Nigel P., Ross, Johnathan P. J., Glauert, Sarah A., Horne, Richard B., Zhang, Shuai, Murphy, Kyle R., Rasinskaitė, Dovilė, Killey, Shannon

“…Kinetic wave-particle interactions in Earth’s outer radiation belt energize and scatter high-energy electrons, playing an important role in the dynamic…”
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