A5070248899- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Earthquake Detection and Analysis
- GNSS positioning and interference
- Theatre and Performance Studies
- Geomagnetism and Paleomagnetism Studies
- Geophysics and Gravity Measurements
- Shakespeare, Adaptation, and Literary Criticism
- Irish and British Studies
- Theater, Performance, and Music History
- Diversity and Impact of Dance
- Methane Hydrates and Related Phenomena
- Philippine History and Culture
- Magnetic confinement fusion research
- Particle Accelerators and Free-Electron Lasers
- Seismic Waves and Analysis
- Atmospheric Ozone and Climate
- Magnetic Field Sensors Techniques
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Art, Politics, and Modernism
- Particle accelerators and beam dynamics
- Geophysical and Geoelectrical Methods
- Geophysics and Sensor Technology
- Aerodynamics and Fluid Dynamics Research
Dartmouth College
2016-2025
Dartmouth Hospital
2014-2024
Coventry University
2022-2024
Royal Central School of Speech and Drama
2001-2017
University of Leeds
2009-2015
Loyola Marymount University
2007
University of London
2006
Johns Hopkins University Applied Physics Laboratory
1999-2002
Goldsmiths University of London
1999
University of Nottingham
1977-1995
Abstract Analysis of the functional approximations used to transform between geographic and Altitude‐Adjusted Corrected Geomagnetic (AACGM) coordinates reveals that errors >50 km can occur in auroral polar regions. These are result efforts better approximate AACGM near magnetic equator South Atlantic Anomaly. In these regions not defined alternate have been used. This augmentation emphasis on solution spherical harmonic approximating functions less accurate than need be response, a new...
The Super Dual Auroral Radar Network (SuperDARN) is a network of high-frequency (HF) radars located in the high- and mid-latitude regions both hemispheres that operated under international cooperation. was originally designed for monitoring dynamics ionosphere upper atmosphere high-latitude regions. However, over last approximately 15 years, SuperDARN has expanded into With radar coverage now extends continuously from auroral to sub-auroral mid-latitudes, wide variety new scientific findings...
Acknowledgements. User's Guide. 1. Medieval Theatre. 2. The Beginning of the Story Drama. 3. Renaissance 4. Image Elizabethan 5. Restoration Comedy. 6. Bawdy, Manners and English National Character. 7. Melodrama. 8. Unacceptable Face 9. Naturalism. 10. 'You Make Me Feel Mighty Real': Proper 11. Post-War British Theatre State. 12. Drama in Age Television. Chronological List Plays. References. Index.
This volume takes up the challenge embodied in its predecessors, Alternative Shakespeares and 2 : to identify explore new, changing, radically "other" possibilities for Shakespeare studies at our particular historical moment.Alternative 3 introduces strongest most innovative of new directions emerging Shakespearean scholarship-ranging across performance studies, multimedia textual criticism, concerns economics, science, religion, ethics-as well as "next step" work areas such postcolonial...
Using line‐of‐sight measurements of horizontal plasma drift from the Super Dual Auroral Radar Network (SuperDARN) located in Northern and Southern hemispheres over a period extending 1998 to 2002, statistical models high‐latitude convection electric field are derived for various ranges interplanetary magnetic (IMF) magnitude orientation several dipole tilt angle. Direct comparison corresponding patterns each hemisphere shows that under neutral conditions (dipole angle <10°) most similar....
Abstract Over the last decade, Super Dual Auroral Radar Network (SuperDARN) has undergone a dramatic expansion in Northern Hemisphere with addition of more than dozen radars offering improved coverage at mid‐latitudes (50°–60° magnetic latitude) and polar cap (80°–90° latitude). In this study, we derive statistical model ionospheric convection (TS18) using line‐of‐sight velocity measurements from complete network mid‐latitude, high‐latitude, for years 2010–2016. These climatological patterns...
of the king one step closer to divine right monarchy and absolute rule.These, many other individual connected themes, make Dr. Lamer' s book a thoughtful challenging work.Seldom will reader find based on such broad penetrating examination secondary primary materials so clear, concise cogent.
A discrete set of climatological patterns high‐latitude ionospheric convection are derived using line‐of‐sight plasma drift data from the Super Dual Auroral Radar Network (SuperDARN). The independently for Northern Hemisphere and Southern varying solar wind, interplanetary magnetic field (IMF), dipole tilt angle conditions. By interpolating between patterns, a dynamical model is obtained, which can uniquely specify electrostatic potential distribution wide range IMF, parameter values....
Abstract Strong Thermal Emission Velocity Enhancement (STEVE) is a latitudinally narrow, purple‐band emission observed at subauroral latitudes. Stable Auroral Red (SAR) arcs characterized by major red emission, and red/green with both green emissions also occur Characteristics of magnetospheric source plasma electromagnetic fields these three types have not been fully understood because the limited conjugate observations between magnetosphere ground. In this study, we report 11 (2 STEVEs, 7...
The recent addition of two radars to the existing network six Super Dual Auroral Radar Network (SuperDARN) HF in Northern Hemisphere has significantly extended area high latitude where measurements convecting ionospheric plasma are made. We show that distribution electrostatic potential Φ associated with “ E × B ” drift can be reliably mapped on global scales when velocity measurments provide sufficient coverage. convection maps, or equivalent solved using an established technique fitting...
We present simultaneous measurements of flow velocities inside a subauroral polarization stream (SAPS) made by six midlatitude high‐frequency SuperDARN radars. The instantaneous observations cover three hours universal time and magnetic local (MLT). From velocity variations across the field‐of‐view radars we infer 2D direction at different longitudes. find that SAPS channel is remarkably constant over course event. speed, however, shows significant temporal spatial variations. After...
Abstract The subauroral polarization streams (SAPS) are latitudinally narrow regions of westward directed flows observed equatorward the evening sector auroral oval. Previous studies have shown that SAPS generally occur during geomagnetically disturbed conditions and exhibit a strong dependence on geomagnetic activity. In this paper, we present first comprehensive statistical study using measurements from U.S. midlatitude Super Dual Auroral Radar Network (SuperDARN) radars. period spans...
We have analyzed Super Dual Auroral Radar Network (SuperDARN) data between February 1998 and December 2000 to determine the statistical characteristics of total variation in high‐latitude ionospheric electric potential, or cross polar cap Φ PC . Periods are chosen satisfy criteria that (1) solar wind interplanetary magnetic field (IMF) quasi‐stable for ≥40 min (2) sufficient SuperDARN exist adequately A 9464 individual 10‐min periods satisfying first analyzed. subset 2721 both criteria,...
For decades, the Rate of Change Total Electron Content Index (ROTI) has been employed to monitor and quantify ionospheric irregularities, serving as a potential substitute for standard scintillation indices. However, date, ROTI not sufficiently investigated in terms its relationship with This study presents preliminarily statistical analysis between indices using GPS receivers from Canadian High Arctic Ionospheric Network (CHAIN) over 5-year period 2011 2015. Our results show that increases,...
Abstract The main phase of the 17 March 2013 storm had excellent coverage from ground‐based instruments and low‐ high‐altitude spacecraft, allowing for evaluation relations between major time phenomena that are often considered separately. shock impact with its concurrent southward interplanetary magnetic field (IMF) immediately drove dramatic poleward expansion boundary auroral oval (implying strong nightside reconnection), activity, penetrating midlatitude convection ionospheric currents....
Abstract Medium‐scale Traveling Ionospheric Disturbances (MSTIDs) are prominent and ubiquitous features of the mid‐latitude ionosphere, observed in Super Dual Auroral Radar Network (SuperDARN) high‐resolution Global Navigational Satellite Service (GNSS) Total Electron Content (TEC) data. The mechanisms driving these MSTIDs an open area research, especially during geomagnetic storms. Previous studies have demonstrated that nightside associated with electrodynamic instability mechanism like...
In this work, we present a novel approach for identifying the ageing history of lithium-ion batteries based on experimental nonlinear frequency response analysis (NFRA) measurements. A regression model, trained simulated NFRA data, is shown to be capable quantifying degradation modes such as solid electrolyte interphase (SEI) growth, lithium plating, and loss active material (LAM) with no a-priori knowledge cell's historical duty. Our analysis, combining simulation approaches, demonstrates...
The high frequency radars in the Super Dual Auroral Radar Network (SuperDARN) estimate elevation angles of returned backscatter using interferometric techniques. These allow ground range to scattering point be estimated, which is crucial for accurate geolocation ionospheric measurements. For accurately it important calibrate interferometer measurements by determining difference signal time delays caused electrical path lengths from main array and at signals are correlated. This delay known...