All earthquakes
1.5
very light
EARTHQUAKE DETAILS

2 km South-East of Santa Domenica Talao

124 months ago · 29 Jun, 13:48

A very light earthquake, probably not felt by people. Being deep, it is felt less at the surface.

Stronger than 68% of Italian events in the past year

Where

2 km South-East of Santa Domenica TalaoEarthquakes in the province of CosenzaEarthquakes in Calabria

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

17 events
Magnitude:lightweakmoderatestrong

The energy released

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

2.7kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×178 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 ≈ 33 s

Animation sped up ~6× compared to reality.

  • Corigliano-Rossano
    54 km from the epicentre
    first tremor in ~13 s
    main shaking in ~22 s
  • Cosenza
    70 km from the epicentre
    first tremor in ~15 s
    main shaking in ~25 s
  • Potenza
    94 km from the epicentre
    first tremor in ~18 s
    main shaking in ~31 s
  • Lamezia Terme
    102 km from the epicentre
    first tremor in ~19 s
    main shaking in ~33 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

53 km
deep
6 times the height of Mount Everest

Being deep, it is felt less at the surface.

deeper than the area average (~25 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?

Foreshock

In hindsight it was a foreshock: 123 months ago the same area had a stronger quake (M2.3). This can only be said after the fact — it was not predictable beforehand.

2.3
The mainshock
5 km South-East of Sapri
123 months ago · 29 Jul, 06:12
Activity in the area right now (30 km radius)
0
last 24 hours
1
last 7 days
9
last 30 days
6 before10 after
this quake
Strongest of the sequence2.3

How often does it happen here?

about every ~10 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 424 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.

19775.9
Golfo di Policastro earthquake
30 December 1977 · 40 km from here
18365.9
Appennino lucano earthquake
20 November 1836 · 37 km from here
IXDestructive: many buildings partly or fully collapse.
19135.6
Calabria settentrionale earthquake
28 June 1913 · 45 km from here
VIII-IXDestructive: many buildings partly or fully collapse.
17085.6
Pollino earthquake
26 January 1708 · 24 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

Rimendiello-Mormanno

The epicentre lies about 13 km from Rimendiello-Mormanno, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.6between 1 and 12 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

1.2
7 km South-East of Mormanno
14 km East · 8 km
124 months ago
30 Jun, 11:39
1.1
3 km North of Castelluccio Inferiore
27 km North-East · 10 km
124 months ago
26 Jun, 04:41
1.3
2 km North-East of Tortora
17 km North · 9 km
123 months ago
9 Jul, 04:45
1.4
123 months ago
14 Jul, 04:58
1.3
4 km East of Mormanno
13 km North-East · 7 km
123 months ago
20 Jul, 18:01
1.2
4 km East of Mormanno
13 km North-East · 7 km
123 months ago
20 Jul, 20:40
1.7
123 months ago
22 Jul, 18:58
0.7
3 km South-West of Lauria
27 km North · 11 km
125 months ago
5 Jun, 02:05
1.5
123 months ago
24 Jul, 02:28
1.4
3 km East of Laino Castello
17 km North-East · 8 km
125 months ago
4 Jun, 03:54

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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