All earthquakes
1.7
very light
EARTHQUAKE DETAILS

2 km East of Schiavon

105 months ago · 4 Jan, 05:49

A very light earthquake, probably not felt by people. At only a few km deep the shaking is felt more sharply at the surface.

Stronger than 78% of Italian events in the past year

Where

2 km East of SchiavonEarthquakes in the province of VicenzaEarthquakes in Veneto

How far away could it be felt?

A quake this small is usually not felt by people: only seismographs record it.

Statistical estimate from the Italian intensity attenuation model (INGV): actual perception depends on geology, buildings and depth. Very shallow events can be felt locally even below the threshold.

Earthquake map

7 events
Magnitude:lightweakmoderatestrong

The energy released

How much energy this quake unleashed, translated into everyday comparisons.

5.4kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×89 its energy
M1this quakeM3

Each extra magnitude unit releases about 32 times more energy: an M5 is not "a bit stronger" than an M4 — it is a different league.

Energy estimated with the standard Gutenberg–Richter relation; an average lightning bolt ≈ 1 billion joules. Indicative values.

The race of the seismic waves

Two waves set off from the hypocentre: the faster P wave arrives first with a sharp jolt; the S wave carries the actual shaking.

P waves — the first sharp jolt (~6 km/s)S waves — the strongest shaking (~3.5 km/s)
t ≈ 16 s

Animation sped up ~3× compared to reality.

  • Vicenza
    17 km from the epicentre
    first tremor in ~3 s
    main shaking in ~5 s
  • Padova
    36 km from the epicentre
    first tremor in ~6 s
    main shaking in ~10 s
  • Treviso
    43 km from the epicentre
    first tremor in ~7 s
    main shaking in ~13 s
  • Venezia
    57 km from the epicentre
    first tremor in ~10 s
    main shaking in ~16 s

Theoretical times with average crustal speeds: real values vary with geology. The gap between P and S waves is what earthquake early-warning systems rely on.

How deep it was born

8 km
shallow

At only a few km deep the shaking is felt more sharply at the surface.

in line with the area average (~11 km)

For the same magnitude, a shallow earthquake is felt much more than a deep one: the energy starts closer to the surface.

What kind of quake is this?

Aftershock

It is an aftershock: it follows a stronger quake (M2.5, 105 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.5
The mainshock
2 km East of Schiavon
105 months ago · 3 Jan, 19:25
Activity in the area right now (30 km radius)
0
last 24 hours
0
last 7 days
0
last 30 days
5 before1 after
this quake
Strongest of the sequence2.5

How often does it happen here?

about every ~53 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 81 events in the last 12 years of the INGV catalogue.

An average computed on the recent past: it tells how used this area is to shaking, not when the next quake will come — earthquakes cannot be predicted.

The great earthquakes in this area's history

Almost a thousand years of catalogues: the strongest documented events within ~50 km.

16956.4
Asolano earthquake
25 February 1695 · 27 km from here
XCompletely destructive: most buildings are destroyed.
18915.9
Valle d'Illasi earthquake
7 June 1891 · 42 km from here
IXDestructive: many buildings partly or fully collapse.
18365.5
Asolano earthquake
12 June 1836 · 17 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
19435.1
Feltrino earthquake
24 July 1943 · 37 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.

Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).

The closest seismic structure

Thiene-Cornuda

The epicentre lies about 3 km from Thiene-Cornuda, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.5between 1 and 7 km deep

Faults are mapped to build better and understand the territory: knowing them says nothing about when an earthquake will occur, which remains unpredictable. Source: DISS 3.3 (INGV, CC BY 4.0).

Other quakes in the area

1.7
2 km East of Schiavon
1 km West · 9 km
105 months ago
3 Jan, 21:08
2.5
2 km East of Schiavon
0 km West · 8 km
105 months ago
3 Jan, 19:25
1.8
2 km East of Schiavon
0 km South-East · 9 km
105 months ago
5 Jan, 20:54
2.2
2 km North of Borso del Grappa
21 km North-East · 12 km
105 months ago
30 Dec, 18:22
1.7
2 km West of Cogollo del Cengio
26 km North-West · 9 km
106 months ago
15 Dec, 16:42
1.2
2 km North of Nove
6 km North · 9 km
106 months ago
5 Dec, 09:49

Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)

Estimates computed by Meteare on INGV data (Gutenberg–Richter relation; Italian macroseismic intensity attenuation model).

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