Table 3.
Deposition timings and cumulative loads determined from numerical simulation of 3 July event at six high-risk locations.
| Site features | Coordinates | 3 July tephra fallout | NE tephra fallout | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Site number | Selected sites | Area | Type of use | Latitude | Longitude | Deposition start mins after explosion | Deposition end * mins after explosion | Ground load kg m−2 | Deposition start mins after explosion | Deposition end * mins after explosion | Ground load kg m−2 |
| 1 | Scari harbor | Stromboli village | Crowded/ meeting place | 38.797533° | 15.239998° | 5 | 20 (20) | 0.014 | 5 | 105 (25) | 1.336 |
| 2 | Scari helipad | Stromboli village | Meeting place | 38.799549° | 15.240411° | 5 | 20 (20) | 0.012 | 5 | 105 (25) | 1.238 |
| 3 | Football field-S. Vincenzo schoolhouse | Stromboli village | Student crowded/ meeting place | 38.804834° | 15.233797° | 5 | 30 (20) | 0.022 | 5 | 105 (20) | 1.069 |
| 4 | Viewpoint/trail-190 m | Above Labronzo | Tourist | 38.805139° | 15.213889° | 5 | 35 (20) | 0.156 | 5 | 110 (20) | 1.615 |
| 5 | Viewpoint/trail-400 m | Above Labronzo | tourist | 38.803201° | 15.214623° | 5 | 25 (20) | 0.166 | <5 | 130 (10) | 6.217 |
| 6 | Porto Pertuso harbor | Ginostra village | Crowded/ meeting place | 38.785361° | 15.189310° | 5 | 180 (20) | 2.611 | 5 | 95 (20) | 0.053 |
Scari harbor and helipad in Stromboli, Football field/S. Vincenzo schoolhouse, two viewing points/trails above Labronzo and Porto Pertuso harbor site locations (1–6) are reported in Fig. 4. For speculative purposes and hazard estimation, a tephra fallout simulation was also run with the same 3 July parameters but with an opposite wind direction (NE). In brackets are the minutes after the explosion for the deposition of 90% of the total load.