Exploring first and second-order spatio-temporal structures of lightning strike impacts in the French Alps using subsampling
arxiv(2024)
摘要
We model cloud-to-ground lightning strike impacts in the French Alps over the
period 2011-2021 (approximately 1.4 million of events) using spatio-temporal
point processes. We investigate first and higher-order structure for this point
pattern and address the questions of homogeneity of the intensity function,
first-order separability and dependence between events. The tuning of
nonparametric methods and the different tests we consider in this study make
the computational cost very expensive. We therefore suggest different
subsampling strategies to achieve these tasks.
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