Search Results - "Lay, Erin H."

Reduction of electron density in the night-time lower ionosphere in response to a thunderstorm by Shao, Xuan-Min, Lay, Erin H., Jacobson, Abram R.

“…Tropospheric thunderstorms have been reported to disturb the lower ionosphere, at altitudes of 65–90 km. The use of lightning signals from a distant mesoscale…”
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The origin of infrasonic ionosphere oscillations over tropospheric thunderstorms by Shao, Xuan‐Min, Lay, Erin H.

“…Thunderstorms have been observed to introduce infrasonic oscillations in the ionosphere, but it is not clear what processes or which parts of the thunderstorm…”
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High temporal and spatial-resolution detection of D-layer fluctuations by using time-domain lightning waveforms by Lay, Erin H., Shao, Xuan-Min

“…This paper presents a new method for probing ionospheric D‐layer fluctuations with time‐domain very‐low and low‐frequency (VLF/LF) lightning waveforms detected…”
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Ionospheric Irregularities and Acoustic/Gravity Wave Activity Above Low‐Latitude Thunderstorms by Lay, Erin H.

“…Ionospheric irregularities due to plasma bubbles, scintillation, and acoustic/gravity waves are studied in the low‐latitude ionosphere in relation to…”
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Local time variation in land/ocean lightning flash density as measured by the World Wide Lightning Location Network by Lay, Erin H., Jacobson, Abram R., Holzworth, Robert H., Rodger, Craig J., Dowden, Richard L.

“…We study local time variation in high peak current lightning over land versus over ocean by using lightning locations from the World Wide Lightning Location…”
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Temporal-spatial modeling of electron density enhancement due to successive lightning strokes by Lay, Erin H., Rodger, Craig J., Holzworth, Robert H., Cho, Mengu, Thomas, Jeremy N.

“…We report results on the temporal‐spatial modeling of electron density enhancement due to successive lightning strokes. Stroke rates based on World‐Wide…”
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Radio Frequency Sensor: Very High Frequency Radio Frequency Lightning Detection in Geostationary Orbit by Lay, Erin H., Romero, Lupe, Peterson, Michael, Nag, Amitabh, Behnke, Sonja, Pailoor, Nikhil

“…The Radio Frequency Sensor (RFS), a new radio frequency lightning detector, was launched into geosynchronous orbit in December 2021, and first collected data…”
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Ionospheric acoustic and gravity waves associated with midlatitude thunderstorms by Lay, Erin H., Shao, Xuan-Min, Kendrick, Alexander K., Carrano, Charles S.

“…Acoustic waves with periods of 2–4 min and gravity waves with periods of 6–16 min have been detected at ionospheric heights (250–350 km) using GPS total…”
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Midlatitude Ionospheric Irregularity Spectral Density as Determined by Ground‐Based GPS Receiver Networks by Lay, Erin H., Parker, Peter A., Light, Max, Carrano, Charles S., Debchoudhury, Shantanab, Haaser, Robert A.

“…We present a new technique to experimentally measure the spatial spectrum of ionospheric disturbances in the spatial scale regime of 40–200 km. This technique…”
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Variation in total electron content above large thunderstorms by Lay, Erin H., Shao, Xuan-Min, Carrano, Charles S.

“…Total electron content (TEC) measured by Global Positioning System (GPS) receivers in the United States Great Plains is examined for three nights with large…”
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Analysis framework for systematically studying ionospheric response to impulsive events from below by Haaser, Robert A., Lay, Erin H., Junor, William

“…Impulsive phenomena in the Earth's atmosphere produce acoustic and gravity waves which perturb the ionosphere. Such perturbations are often measured using…”
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D region electron profiles observed with substantial spatial and temporal change near thunderstorms by Lay, Erin H., Shao, Xuan-Min, Jacobson, Abram R.

“…Broadband lightning signals are used to probe the D region ionosphere with a temporal resolution of 5 min and a spatial resolution of ~50 × 50 km. Together…”
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WWLL global lightning detection system: Regional validation study in Brazil by Lay, Erin H., Holzworth, Robert H., Rodger, Craig J., Thomas, Jeremy N., Pinto Jr, Osmar, Dowden, Richard L.

“…An experimental lightning detection network, the World Wide Lightning Location network (WWLL), is being developed to provide real time global coverage with 10…”
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Evolution of Artificial Ionospheric Irregularities: Dependence on HAARP Beam Pattern by Lay, Erin H., Cummings, Ian, Jeffery, Christopher, Bernhardt, Paul, McCarrick, Mike

“…We used the High-frequency Active Auroral Research Program (HAARP) facility in Gakona, Alaska, to produce artificial ionospheric irregularities. Past…”
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A Study of Bistatic Coherent Radar Imaging of Ionospheric Irregularities Using Simulated Data by Jeffery, Christopher A., Cummings, Ian T., Lay, Erin H.

“…Coherent radar imaging is a powerful interferometric technique that allows scattering structures to be resolved within the radar illumination volume. At the HF…”
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Ionospheric irregularities and acoustic/gravity wave activity above low-latitude thunderstorms by Lay, Erin H.

“…Ionospheric irregularities due to plasma bubbles, scintillation, and acoustic/gravity waves are studied in the low-latitude ionosphere in relation to…”
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Local and statistical maps of lightning-generated wave power density estimated at the Van Allen Probes footprints from the World-Wide Lightning Location Network database by Ripoll, Jean Francois, Farges, Thomas, Lay, Erin H., Cunningham, Gregory Scott

“…We introduce a new method that uses the World-Wide Lightning Location Network (WWLLN) to estimate both the local and the drift lightning power density at the…”
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Mid-latitude ionospheric irregularity spectral density as determined by ground-based GPS receiver networks by Lay, Erin H., Parker, Peter A., Light, Max, Carrano, Charles S., Debchoudhury, Shantanab, Haaser, Robert A.

“…In this paper, we present a new technique to experimentally measure the spatial spectrum of ionospheric disturbances in the spatial scale regime of 40 – 200…”
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Analysis framework for systematically studying ionospheric response to impulsive events from below: Analysis Framework Ionospheric Responses by Haaser, Robert A., Lay, Erin H., Junor, William

“…We present that impulsive phenomena in the Earth's atmosphere produce acoustic and gravity waves which perturb the ionosphere. Such perturbations are often…”
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Alignment of Liquid Crystals on Stepped and Passivated Silicon Templates Prepared in Ultrahigh Vacuum by Lay, Erin H, Kirakosian, A, Lin, J.-L, Petrovykh, D. Y, Crain, J. N, Himpsel, F. J, Shah, Rahul R, Abbott, Nicholas L

“…We report on the orientation of nematic liquid crystals supported on highly regular, periodic, nanometer-scale structures formed from atomic steps on the…”
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