Intra-Annual Distribution of Landslide Recurrence in Georgia and its Relationship with Monthly and Cumulative Multi-Month Sums of Precipitation
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Abstract
The correlation and regression relationship between the intra-annual distribution (%) of the number of landslides (LS) and the precipitation sums in the month when the landslide occurred and the accumulated sums for the month and 1...11 months before the landslide, P(1)…P(12), respectively, were studied. In particular, it was found that the intra annual distribution of landslides across the territory of Georgia is rather uneven. The highest number of landslides occurs in July and September (11.7% and 11.0%, respectively), while the lowest occur in January and November (5.3% and 5.6%, respectively). A moderate correlation is observed between the intra-annual distribution of LS with the intra-annual distributions of P(9)…(12). For the pairs LS – P(1) and LS – P(8), the correlation is low. For the remaining cases, the correlation is negligible. Linear regression equations between the parameters under study are presented.
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