D. Rodeheffer
A5059465825- Lightning and Electromagnetic Phenomena
- Ionosphere and magnetosphere dynamics
- Fire effects on ecosystems
- Astrophysics and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Meteorological Phenomena and Simulations
- Advanced Optical Sensing Technologies
- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Plant responses to water stress
- Earthquake Detection and Analysis
- CCD and CMOS Imaging Sensors
- Infrared Target Detection Methodologies
- Astronomy and Astrophysical Research
- Seismic Waves and Analysis
- Soil Moisture and Remote Sensing
- Gamma-ray bursts and supernovae
- Electromagnetic Compatibility and Noise Suppression
- Ocular and Laser Science Research
- Postharvest Quality and Shelf Life Management
- Solar Radiation and Photovoltaics
- High voltage insulation and dielectric phenomena
- GNSS positioning and interference
- Plant Physiology and Cultivation Studies
- Radio Astronomy Observations and Technology
New Mexico Institute of Mining and Technology
2010-2024
The University of Tokyo
2024
University of Utah
2019
Abstract Bursts of gamma ray showers have been observed in coincidence with downward propagating negative leaders lightning flashes by the Telescope Array Surface Detector (TASD). The TASD is a 700‐km 2 cosmic observatory located southwestern Utah, USA. In data collected between 2014 and 2016, correlated observations showing structure temporal development three shower‐producing were obtained 3‐D mapping array, electric field change measurements for an additional seven flashes, both cases...
In this paper we report the first close, high-resolution observations of downward-directed terrestrial gamma-ray flashes (TGFs) detected by large-area Telescope Array cosmic ray observatory, obtained in conjunction with broadband VHF interferometer and fast electric field change measurements parent discharge. The results show that TGFs occur during strong initial breakdown pulses (IBPs) few milliseconds negative cloud-to-ground low-altitude intracloud flashes, IBPs are produced a...
Abstract. The PEACH project (Projet en Electricité Atmosphérique pour la Campagne HyMeX – the Atmospheric Electricity Project of Program) is atmospheric electricity component Hydrology cycle in Mediterranean Experiment (HyMeX) experiment and dedicated to observation both lightning activity electrical state continental maritime thunderstorms area Sea. During SOP1 (Special Observation Period) from 5 September 6 November 2012, four European operational locating systems (ATDnet, EUCLID, LINET,...
Abstract Terrestrial Gamma-ray Flashes (TGFs) are intense bursts of gamma rays originating from the Earth’s atmosphere, primarily produced by lightning flashes through relativistic runaway electron avalanches. Observations Telescope Array in Utah, equipped with a variety detection instruments, have revealed detailed insights into TGF initiation and propagation, including their optical emissions. High-speed video cameras spectroscopic systems captured emissions linked to TGFs, revealing key...
In the summer of 2013 we participated in a field program to study lightning attachments wind turbines. As part this program, deployed ten-station compact Lightning Mapping Array (LMA) vicinity farm Kansas. Because small size LMA network (25 km diameter) and low environmental RF noise levels, was very sensitive, being able locate sources with radiated powers as 10 milliwatts. addition LMA, two continuously-recording electric mills were located near turbines farm. When local fields high (|E| >...
Abstract. The PEACH (Projet en Electricité Atmosphérique pour la Campagne HyMeX – the Atmospheric Electricity Project of Program) project is component (Hydrology cycle in Mediterranean Experiment) experiment and dedicated to observation both lightning activity electrical state continental maritime thunderstorms area Sea. During SOP1 (Special Observation Period; 5 September–6 November 2012), four European Operational Lightning Locating Systems (OLLSs) (ATDNET, EUCLID, LINET, ZEUS) Mapping...
Although a number of studies have been conducted the lightning activity in hurricanes and typhoons, little information has obtained on 3-dimensional structure lightning, or how it is related to precipitation structures within storms. Here we utilize observational data from 3-D Tokyo Lightning Mapping Array (Tokyo LMA), Japan Meteorological Agency C-band Doppler radar, Japanese Detection Network (JLDN) conduct study during Typhoon Faxai (2019) comparison with storm's structure. This done for...
The National Research Institute for Earth Science and Disaster Resilience deployed a lightning mapping array (LMA) in the Tokyo metropolitan area March 2017. Called “Tokyo LMA,” it obtains detailed three-dimensional observations of total activity (cloud-to-ground intracloud flashes) storms. network initially consisted 8 receiving stations, expanded to 12 stations 2018. Real-time images were first opened on webpage Japan. from LMA will be used nowcasting hazards mitigating disasters. Archived...
Less than 20 years after the discovery of first extrasolar planet, exoplanetology is rapidly growing with more one every week on average since 2007. An important step in chemical characterization exoplanet atmospheres. It has recently been shown that molecular signatures transiting exoplanets can be studied from ground. To advance this idea and prepare ambitious missions such as THESIS, a dedicated spectrometer named New Mexico Tech Extrasolar Spectroscopic Survey Instrument (NESSI) being...
Optical emissions associated with Terrestrial Gamma-ray Flashes (TGFs) have recently become important subjects in space-based and ground-based observations since these play crucial roles understanding the generation of TGFs during thunderstorms. In this paper, we present first time-resolved leader spectra optical component a downward TGF. The TGF was observed at Telescope Array Surface Detector (TASD) simultaneously other lightning detectors, including Lightning Mapping (LMA), an...
Optical emissions associated with Terrestrial Gamma-ray Flashes (TGFs) have recently become important subjects in space-based and ground-based observations since these play crucial roles understanding the generation of TGFs during thunderstorms. In this paper, we present first time-resolved leader spectra optical component a downward TGF. The TGF was observed at Telescope Array Surface Detector (TASD) simultaneously other lightning detectors, including Lightning Mapping (LMA), an...
Abstract Optical emissions associated with Terrestrial Gamma ray Flashes (TGFs) have recently become important subjects in space‐based and ground‐based observations as they can help us understand how TGFs are produced during thunderstorms. In this paper, we present the first time‐resolved leader spectra of optical component a downward TGF. The TGF was observed by Telescope Array Surface Detector (TASD) simultaneously other lightning detectors, including Lightning Mapping (LMA), an...
Abstract On 11 September 2021, two small thunderstorms developed over the Telescope Array Surface Detector (TASD) that produced an unprecedented number of six downward terrestrial gamma ray flashes (TGFs) within one‐hour timeframe. The TGFs occurred during initial stage negative cloud‐to‐ground whose return strokes had increasingly large peak currents up to 223 kA, 147 GeV energy deposit in 25 1.2 km‐spaced surface detectors, and intermittent bursts gamma‐rays with total durations 717 s....