Toma Oregel-Chaumont
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View article: Similarities in the Initiation of Upward Positive and Downward Negative Lightning Flashes
Similarities in the Initiation of Upward Positive and Downward Negative Lightning Flashes Open
This study examines the relationship between upward negative stepped leader pulses in upward positive lightning and preliminary breakdown pulses (PBPs) in downward negative lightning discharges. Through analysis of simultaneous channel-bas…
View article: Underlying Physical Mechanisms in Upward Positive Flashes
Underlying Physical Mechanisms in Upward Positive Flashes Open
This study presents the first observation of a mixed mode (MM) of charge transfer during an upward positive flash, which was initiated from the Säntis Tower in Switzerland. High‐speed camera footage, along with current and electric field m…
View article: Underlying Physical Mechanisms in Upward Positive Flashes
Underlying Physical Mechanisms in Upward Positive Flashes Open
This study presents the first observation of a mixed mode (MM) of charge transfer during an upward positive flash, which was initiated from the Säntis Tower in Switzerland. High‐speed camera footage, along with current and electric field m…
View article: Cartesian and spherical multipole expansions in anisotropic media
Cartesian and spherical multipole expansions in anisotropic media Open
The multipole expansion can be formulated in spherical and Cartesian coordinates. By constructing an explicit map linking both formulations in isotropic media, we discover a lack of equivalence between them in anisotropic media. In isotrop…
View article: Cartesian and spherical multipole expansions in anisotropic media
Cartesian and spherical multipole expansions in anisotropic media Open
The multipole expansion can be formulated in spherical and Cartesian coordinates. By constructing an explicit map linking both formulations in isotropic media, we discover a lack of equivalence between them in anisotropic media. In isotrop…
View article: Direct observations of X-rays produced by upward positive lightning
Direct observations of X-rays produced by upward positive lightning Open
View article: Mixed Mode of Charge Transfer During an Upward Positive Flash at Säntis Tower
Mixed Mode of Charge Transfer During an Upward Positive Flash at Säntis Tower Open
The term “mixed mode of charge transfer to ground for initial continuous current (ICC) pulses” in the context of upward lightning flashes was first proposed by Zhou et al. 2011 [1] to describe fast pulses, distinct from the cla…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground light-ning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leade…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground lightning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground lightning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader…