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EARTHQUAKE DETAILS

M2.0 earthquake · 4 km South-West of Belluno (BL)

2 years ago · 6 Sept 2024, 14:40

A light earthquake, rarely felt by people. At only a few km deep the shaking is felt more sharply at the surface.

Stronger than 88% of Italian events in the past year

Where

4 km South-West of BellunoEarthquakes in the province of BellunoEarthquakes 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

15 events
Magnitude:lightweakmoderatestrong

The energy released

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

15kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×32 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 ≈ 22 s

Animation sped up ~4× compared to reality.

  • Pordenone
    42 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Treviso
    49 km from the epicentre
    first tremor in ~8 s
    main shaking in ~14 s
  • Venezia
    72 km from the epicentre
    first tremor in ~12 s
    main shaking in ~21 s
  • Bolzano
    75 km from the epicentre
    first tremor in ~13 s
    main shaking in ~22 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

10 km
shallow
1.1 times the height of Mount Everest

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

in line with the area average (~9 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?

Mainshock

It is the strongest quake of its sequence: so far it has been followed by 4 aftershocks within 30 km. Aftershocks tend to fade in number and strength over time.

Activity in the area right now (30 km radius)
0
last 24 hours
1
last 7 days
2
last 30 days
10 before4 after
this quake
Strongest of the sequence1.6

How often does it happen here?

about every ~30 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 143 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 · 33 km from here
XCompletely destructive: most buildings are destroyed.
18736.3
Alpago Cansiglio earthquake
29 June 1873 · 18 km from here
IX-XCompletely destructive: most buildings are destroyed.
19366.1
Alpago Cansiglio earthquake
18 October 1936 · 17 km from here
IXDestructive: many buildings partly or fully collapse.
17765.8
Prealpi Friulane earthquake
10 July 1776 · 44 km from here
VIII-IXDestructive: many buildings partly or fully collapse.

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

The closest seismic structure

Bassano-Vittorio Veneto

The epicentre lies about 3 km from Bassano-Vittorio Veneto, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.9between 1 and 10 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

1.4
3 km South-West of Belluno
1 km North-East · 10 km
2 years ago
6 Sept 2024, 14:54
1.0
4 km South-West of Belluno
0 km South-East · 10 km
2 years ago
6 Sept 2024, 14:15
1.3
4 km South-West of Belluno
0 km North-West · 11 km
2 years ago
6 Sept 2024, 14:03
1.2
4 km South-West of Belluno
0 km North-West · 11 km
2 years ago
7 Sept 2024, 16:06
1.0
2 km North-West of Aviano
29 km East · 26 km
2 years ago
4 Sept 2024, 11:11
0.7
2 km North-East of Tambre
21 km East · 9 km
2 years ago
8 Sept 2024, 21:51
1.0
3 km North-West of Barcis
29 km East · 8 km
2 years ago
23 Aug 2024, 08:26
1.6
3 km North-East of Conegliano
24 km South-East · 15 km
2 years ago
19 Aug 2024, 00:15
1.0
2 km West of Limana
5 km South · 9 km
2 years ago
17 Aug 2024, 01:44
1.2
8 km North-West of Fregona
13 km East · 5 km
2 years ago
14 Aug 2024, 03:02

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).