Publication

Two Possible Scenarios for the Formation of Category 1 Bipolar Lightning Flashes

Marcos Rubinstein, Mohammad Azadifar, Davide Pavanello, Qi Li
2019
Conference Papers

Résumé

We present and discuss the current and electric field waveforms associated with two upward bipolar lightning flashes that occurred at the Säntis Tower. According to the traditional classification of bipolar flashes, both observed flashes could be classified as Category 1 flashes. The first one belongs to the subcategory 1a in which the polarity reversal during the initial stage is associated with an in-cloud process, while the second one involves the sequential initiation of two opposite-polarity leaders from the tower.

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https://infoscience.epfl.ch/entities/publication/bf11925e-537a-4a89-a3fe-2673fe099022

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Marcos Rubinstein, Mohammad Azadifar, Davide Pavanello, Qi Li
2019
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/bf11925e-537a-4a89-a3fe-2673fe099022

À propos de ce résultat

Concepts associés (25)

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La foudre est un phénomène naturel de décharge électrostatique disruptive de grande intensité qui se produit dans l'atmosphère, entre des régions chargées électriquement, et peut se produire soit à l'intérieur d'un nuage (décharge intra-nuageuse), soit entre plusieurs nuages (inter-nuageuse), soit entre un nuage et le sol (nuage-sol ou sol-nuage). La foudre est toujours accompagnée d'un ou plusieurs éclairs (émission intense de rayonnement électromagnétique, dont les composantes se situent dans la partie visible du spectre), et du tonnerre (émission d'ondes sonores), en plus d'autres phénomènes associés.

Arc flash

An arc flash is the light and heat produced as part of an arc fault, a type of electrical explosion or discharge that results from a connection through air to ground or another voltage phase in an electrical system. Arc flash is distinctly different from the arc blast, which is the supersonic shockwave produced when the uncontrolled arc vaporizes the metal conductors. Both are part of the same arc fault, and are often referred to as simply an arc flash, but from a safety standpoint they are often treated separately.

Semiconductor memory

Semiconductor memory is a digital electronic semiconductor device used for digital data storage, such as computer memory. It typically refers to devices in which data is stored within metal–oxide–semiconductor (MOS) memory cells on a silicon integrated circuit memory chip. There are numerous different types using different semiconductor technologies. The two main types of random-access memory (RAM) are static RAM (SRAM), which uses several transistors per memory cell, and dynamic RAM (DRAM), which uses a transistor and a MOS capacitor per cell.

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