Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 30-12-2021 and time 23:56:12 (Italy) in region Costa Calabra nord occidentale (Cosenza)

A magnitude ML 1.1 earthquake occured in region: Costa Calabra nord occidentale (Cosenza), on

  • 30-12-2021 22:56:12 (UTC)
  • 30-12-2021 23:56:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.2080, 15.9350 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Fiumefreddo Bruzio CS 12 2994 2994
Longobardi CS 12 2312 5306
Belmonte Calabro CS 13 2003 7309
Amantea CS 15 13975 21284
San Lucido CS 15 6047 27331
Falconara Albanese CS 15 1427 28758
San Pietro in Amantea CS 17 505 29263
Lago CS 19 2624 31887
Paola CS 19 16013 47900

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Cosenza (67546 inhabitants)
42 Km NW of Lamezia Terme (70714 inhabitants)
66 Km NW of Catanzaro (90612 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.1 2021-12-30
22:56:12		 39.2078 15.9352 10 2022-03-30
13:04:25		 Bollettino Sismico Italiano INGV 99257511
Reviewed
Rev100 		ML 1.3 2021-12-30
22:56:12		 39.2022 15.9445 10 2021-12-30
23:06:51		 Sala Sismica INGV-Roma 99173131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-30 22:56:12 ± 0.22
Latitude 39.2078 ± 0.0108
Longitude 15.9352 ± 0.0186
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99257511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1640
Semi-minor axis of confidence ellipse (meter) 1130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 1640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.21854
Epicentral distance of station farthest from the epicenter (degree) 0.97486
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 99257511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-03 12:00:06

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 99173131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-30 23:06:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGR.HHZ. 2021-12-30T22:56:30.75 0.3 undecidable manual P 343 108.2139 50 0.4 62
IV.PLAC.HHE. 2021-12-30T22:56:28.75 0.3 undecidable manual P 153 94.7385 50 0.47 63
MN.TIP.HHN. 2021-12-30T22:56:25.61 0.3 undecidable manual P 92 70.8735 50 1.01 53
IV.JOPP.HNZ. 2021-12-30T22:56:24.03 0.3 undecidable manual P 184 66.7776 50 0.05 73
IV.SPS2.HHZ. 2021-12-30T22:56:24.46 0.6 undecidable manual S 75 35.8419 50 0.09 51
IV.GRIS.HNZ. 2021-12-30T22:56:23.07 0.3 undecidable manual P 353 59.496 50 0.22 71
IV.CET2.HHZ. 2021-12-30T22:56:23.43 0.6 undecidable manual S 3 35.6421 50 -0.87 40
IV.GIZZ.HHZ. 2021-12-30T22:56:23.28 0.3 undecidable manual S 137 34.5432 50 -0.72 64
IV.CELI.HNZ. 2021-12-30T22:56:22.84 0.3 undecidable manual P 66 53.8017 50 0.88 58
IV.CAR1.HHZ. 2021-12-30T22:56:21.21 0.3 undecidable manual S 78 24.2535 50 -0.06 78
IV.SPS2.HHZ. 2021-12-30T22:56:19.23 0.3 undecidable manual P 75 35.8419 50 0.02 77
IV.CET2.HHZ. 2021-12-30T22:56:18.72 0.1 undecidable manual P 3 35.6421 50 -0.45 94
IV.GIZZ.HHZ. 2021-12-30T22:56:18.69 0.1 undecidable manual P 137 34.5432 50 -0.31 97
IV.CAR1.HHZ. 2021-12-30T22:56:17.15 0.1 undecidable manual P 78 24.2535 50 -0.27 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HNE. ML:0.9 0.000046061585000000005 1.2544 AML other m 2021-12-30T22:56:20.84
IV.CAR1.HHE. ML:1.2 0.00008528548999999999 1.6448 AML other m 2021-12-30T22:56:23.03
IV.SPS2.HHE. ML:0.1 0.0000064448445 1.1776 AML other m 2021-12-30T22:56:24.52
IV.GIZZ.HHE. ML:1.5 0.0001274721 0.64 AML other m 2021-12-30T22:56:24.59
IV.GIZZ.HHN. ML:1.5 0.0001242385 0.2176 AML other m 2021-12-30T22:56:24.65
IV.CET2.HHE. ML:1.1 0.000056881945000000005 0.96 AML other m 2021-12-30T22:56:24.93
IV.CET2.HHN. ML:1.2 0.00006252466 0.1024 AML other m 2021-12-30T22:56:25.16
IV.SPS2.HHN. ML:0.7 0.000019656715 1.4208 AML other m 2021-12-30T22:56:25.41
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download