Table 1.

Hurst parameters H, as obtained for the detrended data of all 15 considered 1-grams describing natural phenomena. The left column lists results as obtained with the adaptive fractal analysis (AFA), while the right column lists results as obtained with the detrended fluctuation analysis (DFA). The range of values as obtained by AFA is 0.55 ≤ H ≤ 0.85, with an average over all 15 considered 1-grams equalling . With DFA, we obtain 0.41 ≤ H ≤ 0.85 and .

1-grams	Hurst parameter (H)
	AFA	DFA
avalanche	0.63 ± 0.06	0.79 ± 0.06
comet	0.60 ± 0.03	0.73 ± 0.04
drought	0.81 ± 0.05	0.69 ± 0.09
earthquake	0.65 ± 0.02	0.72 ± 0.03
erosion	0.85 ± 0.06	0.86 ± 0.08
fire	0.67 ± 0.05	0.70 ± 0.03
flooding	0.85 ± 0.06	0.72 ± 0.08
hurricane	0.70 ± 0.03	0.69 ± 0.08
landslide	0.66 ± 0.05	0.41 ± 0.20
life	0.62 ± 0.03	0.65 ± 0.06
lightning	0.63 ± 0.03	0.70 ± 0.03
mudslide	0.80 ± 0.02	0.58 ± 0.28
tornado	0.59 ± 0.02	0.64 ± 0.06
tsunami	0.81 ± 0.05	0.66 ± 0.03
typhoon	0.55 ± 0.02	0.50 ± 0.09