Qiming Ma
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View article: Characteristics of Lightning Ignition and Spatial–Temporal Distributions Linked with Wildfires in the Greater Khingan Mountains
Characteristics of Lightning Ignition and Spatial–Temporal Distributions Linked with Wildfires in the Greater Khingan Mountains Open
Lightning-ignited wildfires represent a dominant natural disturbance agent in the Greater Khingan Mountains of northeastern China; however, the relationship between their occurrence and lightning characteristics remains insufficiently quan…
View article: Analysis of Lightning Electromagnetic Field in Mountainous Terrain
Analysis of Lightning Electromagnetic Field in Mountainous Terrain Open
The propagation characteristics of lightning electromagnetic fields(EMFs) in different terrains are of great significance for research on lightning disaster protection and lightning location. In this paper, we establish a simplified model …
View article: Improving the Detection Effect of Long-Baseline Lightning Location Networks Using PCA and Waveform Cross-Correlation Methods
Improving the Detection Effect of Long-Baseline Lightning Location Networks Using PCA and Waveform Cross-Correlation Methods Open
Ultra-long-distance and high-precision lightning location technology is an important means to realize low-cost and wide-area lightning detection. This paper carried out research on the high-precision location technology of very-low-frequen…
View article: An Efficient Compression Method for Lightning Electromagnetic Pulse Signal Based on Convolutional Neural Network and Autoencoder
An Efficient Compression Method for Lightning Electromagnetic Pulse Signal Based on Convolutional Neural Network and Autoencoder Open
Advances in technology have facilitated the development of lightning research and data processing. The electromagnetic pulse signals emitted by lightning (LEMP) can be collected by very low frequency (VLF)/low frequency (LF) instruments in…
View article: Weather conditions several hours before the strong earthquake
Weather conditions several hours before the strong earthquake Open
Physical phenomena observed before strong earthquake have been reported over centuries. Radon anomalies, electrical signals, water level changes, earthquake lights near the epicenter are recognized as pre-earthquake signals to approach ear…
View article: Asia-Pacific Lightning Location Network (APLLN) and Preliminary Performance Assessment
Asia-Pacific Lightning Location Network (APLLN) and Preliminary Performance Assessment Open
The Asia-Pacific Lightning Location Network (APLLN) is a lightning location system consisting of a series of very low-frequency signal detection sites. Since 2018, 16 detection sites have been deployed with an average baseline longer than …
View article: The near surface vertical atmospheric electric field abnormality could be as a promising imminent precursor of major earthquakes
The near surface vertical atmospheric electric field abnormality could be as a promising imminent precursor of major earthquakes Open
A promising short term precursor of major earthquakes (EQ) is very crucial in saving people and preventing huge losses. Ez, atmospheric electrostatic field vertical component, under fair air conditions, is generally oriented downwards (pos…
View article: Classification of VLF/LF Lightning Signals Using Sensors and Deep Learning Methods
Classification of VLF/LF Lightning Signals Using Sensors and Deep Learning Methods Open
Lightning waveform plays an important role in lightning observation, location, and lightning disaster investigation. Based on a large amount of lightning waveform data provided by existing real-time very low frequency/low frequency (VLF/LF…
View article: Hour-scale persistent negative anomaly of atmospheric electrostatic field near the epicenter before earthquake
Hour-scale persistent negative anomaly of atmospheric electrostatic field near the epicenter before earthquake Open
Although earthquake prediction is a big challenge in the world, some simple observational tools can capture many physical signals and demonstrate that an earthquake (EQ) may be forthcoming in short period. Many researchers have studied the…