Fig. 12From: Classification of drought severity in contiguous USA during the past 21 years using fractal geometryPlots of \(\log (L_{m}^{k})\) versus \(\log (k)\) for time interval \(k=500\), the logarithmic scale and the corresponding slope of fitted regression line (the Higuchi fractal dimension) for Drought Monitor Categories database (2000–present)Back to article page