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Table 5 Hazard scenarios defined for Ceboruco volcano. The processes involved in each eruptive scenario are indicated

From: Ceboruco hazard map: part I - definition of hazard scenarios based on the eruptive history

ScenariosDescriptionVolcanic phenomena
ASH FALLOUTBALLISTIC BLOCKSLAVA FLOWSPYROCLASTIC FLOWSLAHARS
SCENARIO 1Effusive eruption of andesitic composition Volume: 0.02–0.5 km3 Eruptive column height: 1–5 km VEI < 2VolumeDiameterVolume  
0.001–0.025 km30.1–0.5 m0.02–0.475 km3  
Eruptive column heightDensityAverage thickness  
1–5 kmAndesite 2500 kg/m310–40 m  
GranulometryInitial velocityLength  
Samples of 1870 eruption150 a 200 m/s8–15 km  
SCENARIO 2Vulcanian eruption, with a dacitic effusive phase Volume: 0.5–2.5 km3 Eruptive column height: 5–15 km VEI: 2–3VolumeDiameterVolumeVolumeVolume
0.05–0.25 km30.1–0.5 m0.475–2.125 km30.025–0.125 km30.5–3/4 x 106m3 (water + sediments)
Eruptive column heightDensityAverage thicknessBed frictionSediment input areas
5–15 kmAndesite/Dacite 2500–2800 kg/m340–140 m Ceboruco slopes
GranulometryInitial velocityLengthColumn collapse height 
Samples of 1870 eruption150 a 200 m/s4–8 km1500 m
SCENARIO 3Plinian eruption Volume: 2.5–5 km3 Eruptive column height: >  20 km VEI > 3VolumeDiameter VolumeVolume
2–4 km3>  0.5 m0.5–1 km39–11 × 106 m3 (water + sediments)
Eruptive column heightDensityBed frictionSediment input areas
15–35 kmAndesite/Dacite 2500–2800 kg/m3 Ceboruco slopes + SMO
GranulometryInitial velocityColumn collapse height 
Samples of plinian eruption Jala150 a 200 m/s1500 m
Modelling computer codes to reproduce volcanic phenomenaTephra 2 (Bonadonna et al., 2014) Hazmap (Macedonio et al., 2005)Eject! Code (Mastin, 2001)Etna Lava Flow Model (Damiani et al., 2006)Titan2D (Patra et al., 2005; Sheridan et al., 2005)Flo-2D (O’Brien et al., 1993) LaharZ (Schilling, 1998)