Lightning initiation: Strong pulses of VHF radiation accompany preliminary breakdown [PDF]
Scientific Reports, 2018 We analyze lightning initiation process using magnetic field waveforms of preliminary breakdown (PB) pulses observed at time scales of a few tens of microseconds by a broad-band receiver.
Ivana Kolmašová +11 more
doaj +7 more sources
Characteristics of Preliminary Breakdown Pulses in Positive Ground Flashes during Summer Thunderstorms in Sweden [PDF]
Atmosphere, 2016 This paper presents the characteristics of the preliminary breakdown pulses (PBP) in 51 positive ground flashes recorded during 2014 summer thunderstorms in Sweden.
Dalina Johari +4 more
doaj +5 more sources
Diagnostic of Preliminary Breakdown in an Artificial Thunderclouds [PDF]
Jurnal Teknologi, 2012 Kilat ialah satu fenomena kemusnahan. Kilat boleh menyebabkan kebakaran, kerosakan dan membunuh manusia dan haiwan. Oleh itu, kita perlu mempunyai sejenis alat pencegahan untuk memicu kilat sebelum ia boleh menyambar secara semula jadi. Salah satu kaedah yang boleh digunakan ialah dengan menggunakan laser.
Bidin, Noriah, Pangeran, Madia
openaire +2 more sources
Characteristics of the Preliminary Breakdown in Inverted-polarity Intracloud Lightning Flashes
应用气象学报, 2023 The intracloud (IC) flashes can be classified into normal and inverted-polarity types according to their initial leader propagation directions. Due to the rare occurrence of inverted-polarity IC flashes with downward preliminary breakdown (PB) processes,
Gao Panliang +4 more
doaj +2 more sources
Atmosphere, 2016 Using an automated data processing algorithm, we examined electric field records of 5498 negative cloud-to-ground flashes reported by the U.S. National Lightning Detection Network (NLDN) within 50 to 500 km of the Lightning Observatory in Gainesville ...
Yanan Zhu +2 more
doaj +3 more sources
KARAKTERISTIK PRELIMINARY BREAKDOWN PETIR TERMINOLOGI BREAKDOWN-LEADER (BL) SEBELUM SAMBARAN NEGATIF PERTAMA [PDF]
, 2015 Latar Belakang Kota Padang merupakan salah satu daerah yang memiliki potensi cukup besar dalam kejadian petir setiap tahunnya. Hal ini karena kota Padang secara geografis terletak disekitar garis ekuator dan mendapatkan intensitas cahaya matahari yang merata sepanjang tahunnya.
OKKY, SEXCIO ALEXANDER
core +3 more sources
Karakteristik Preliminary Breakdown Petir Downward Leader Sebelum Sambaran Negatif Pertama [PDF]
Jurnal Nasional Teknik Elektro, 2014 A hundred lightning flash was observed in Padang city, West Sumatera at January until Mei 2013. The lightning that use to analyze is proceeding with preliminary breakdown pulse (PBP) train and followed by first negative return stroke (RS).
Zulka Hendri, Ariadi Hazmi
doaj +4 more sources
Enhancing formation breakdown pressure using optimized drilling fluid additives with preventive wellbore strengthening approach [PDF]
Scientific ReportsAccurate evaluation of formation fracture pressure is essential to prevent induced fracturing and mitigate drilling fluid losses, representing one of the major challenges in oil and gas well drilling operations.
Ahmadreza Abdshahi +4 more
doaj +2 more sources
Time domain simulations of preliminary breakdown pulses in natural lightning. [PDF]
J Geophys Res Atmos, 2015 AbstractLightning discharge is a complicated process with relevant physical scales spanning many orders of magnitude. In an effort to understand the electrodynamics of lightning and connect physical properties of the channel to observed behavior, we construct a simulation of charge and current flow on a narrow conducting channel embedded in three ...
Carlson BE +3 more
europepmc +6 more sources
Perbedaan karakteristik pulsa peter narrow bipolar dengan Preliminary breakdown
, 2017 Narrow Bipolar merupakan salah satu kejadian petir yang terjadi di dalam awan yang berlangsung sangat cepat dan memiliki kekuatan radiasi yang sangat kuat dibandingkan petir biasa. Preliminary Breakdown adalah deretan pulsa medan listrik yang terjadi beberapa milidetik sebelum Stepped Leader dan Return Stroke dimana dapat dilihat dari polaritas ...
Answar, Evan
core +2 more sources