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Table 1 Key lahar rheological parameters used in the numerical simulations with SPH for 8 different scenarios (refer to Table 7 in Appendix A for the associated physical meaning of the combination of the various parameters). ϕb: basal friction angle of the propagating flow, hwrel: relative water height, pwrel: ratio of pore water pressure to liquefaction pressure; cv: consolidation factor, K: empirical parameter for the bed entrainment law of Blanc et al. (2011). * The calibration was performed by using some results of Cuomo et al. (2016) and Baumann et al. (2019)

From: Lahar risk assessment from source identification to potential impact analysis: the case of Vulcano Island, Italy

Scenario

hwrel

(-)

pwrel

(-)

tan Ï•b

(-)

cv

(m2s-1)

K

(-)

 

Calibration from previous studies *

Parametric Analysis

V1

1.0

0.4

0.4

10-3

0.019

V2

0.3

10-3

0.019

V3

0.2

10-3

0.019

V4

0.2

10-2

0.007

V5

0.2

10-3

0.007

V6

0.2

10-3

0.0007

V7

0.3

10-2

0.0007

V8

0.3

10-2

0.007