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Table 4 results of the elicitation V

From: Operational eruption forecasting at high-risk volcanoes: the case of Campi Flegrei, Naples

  inertia units threshold weight
Node 1     
1) # VT (M > 0.8) () ev/day > 5-15 -
2) # LP/VLP/ULP () ev/month > 2-10 -
3) Uplift cum. last 3 months cm > 2-6 -
4) Uplift rate last 3 months cm/month > 0.7-1.3 -
5) New fractures last 3 months - YES/NO -
6) Degassing structure extension or increase in flux last month - YES/NO -
7) Presence of acid gases (HF, HCl, SO2) last week - YES/NO -
8) Temperature at fumarole “Pisciarelli” last month oC > 100-110 -
Node 2     
1) # deep VT (> 3.5 km, M > 0.8) () ev/day > 2-20 0.90
2) # deep LP (> 2.0 km) () ev/month > 3-20 0.50
3) # VLP/ULP () ev/month > 1-5 1
4) Presence of tremor last month - YES/NO 1
5) Presence of deep tremor (> 3.5 km) last month - YES/NO 1
6) Uplift cum. last 3 months cm > 5-15 1
7) New fractures last 3 months - YES/NO 0.20
8) Macroscopic variation on the last 3 months - YES/NO 1
deformation pattern (tens of m)     
9) Presence of acid gases (HF, HCl, SO2) last week - YES/NO 1
10) Variation in magmatic component last month - YES/NO 0.10
Node 3     
1) Acceleration in # seismic events last week - YES/NO 1
2) Acceleration in RSAM last week - YES/NO 0.70
3) Presence of tremor last month - YES/NO 1
4) Hypocenter dispersion (depth range) (10th - 90th perc.) last week km > 1-3 0.30
5) Macroscopic variation on the last week - YES/NO 1
deformation pattern (tens of m)     
6) Migration of incremental maximum (m) last week - YES/NO 0.70
7) New fractures last 3 months - YES/NO 0.40
8) Presence of acid gases (HF, HCl, SO2) last week - YES/NO 1
9) Phreatic activity last week - YES/NO 1
  1. NOTES:
  2. (): number of observed events divided by the number of days from the observation. This choice makes the inertia proportional to the registered number of events (and the total energy emitted), that is, the higher the number of events, the longer the inertia.
  3. Legend: The results of the elicitation V are here reported. The same symbols of Table 1 are used.