Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-09-2022 and time 00:46:11 (Italy) in region 2 km W Davagna (GE)

A magnitude ML 1.6 earthquake occured in region: 2 km W Davagna (GE), on

  • 22-09-2022 22:46:11 (UTC)
  • 23-09-2022 00:46:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4690, 9.0640 at 9 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
Davagna GE 2 1884 1884
Bargagli GE 3 2708 4592
Montoggio GE 6 2067 6659
Lumarzo GE 7 1535 8194
Sant'Olcese GE 8 5906 14100
Casella GE 9 3144 17244
Torriglia GE 9 2311 19555
Valbrevenna GE 10 798 20353
Bogliasco GE 10 4488 24841
Uscio GE 10 2284 27125
Neirone GE 10 916 28041
Pieve Ligure GE 11 2544 30585
Serra Riccò GE 11 7885 38470
Sori GE 11 4205 42675
Tribogna GE 12 614 43289
Genova GE 12 586655 629944
Avegno GE 12 2525 632469
Savignone GE 12 3205 635674
Moconesi GE 13 2614 638288
Crocefieschi GE 13 548 638836
Recco GE 13 9752 648588
Mignanego GE 14 3675 652263
Ceranesi GE 14 3875 656138
Campomorone GE 14 6996 663134
Propata GE 15 142 663276
Busalla GE 15 5563 668839
Vobbia GE 15 409 669248
Cicagna GE 15 2502 671750
Camogli GE 15 5378 677128
Favale di Malvaro GE 16 466 677594
Rondanina GE 16 62 677656
Montebruno GE 16 240 677896
Lorsica GE 17 468 678364
Fascia GE 17 81 678445
Ronco Scrivia GE 18 4417 682862
Orero GE 18 565 683427
Coreglia Ligure GE 18 285 683712
Rapallo GE 19 29796 713508
Santa Margherita Ligure GE 19 9338 722846
Mongiardino Ligure AL 19 165 723011
Carrega Ligure AL 19 84 723095

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NE of Genova (586655 inhabitants)
50 Km E of Savona (61345 inhabitants)
61 Km SE of Alessandria (93943 inhabitants)
73 Km NW of La Spezia (93959 inhabitants)
80 Km S of Pavia (72576 inhabitants)
82 Km SW of Piacenza (102191 inhabitants)
83 Km SE of Asti (76202 inhabitants)
93 Km W of Carrara (63133 inhabitants)
96 Km S of Vigevano (63310 inhabitants)
98 Km W of Massa (69479 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 1.6 2022-09-22
22:46:11		 44.4692 9.0637 9 2024-03-01
15:28:22		 Bollettino Sismico Italiano INGV 116488441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-22 22:46:11 ± 0.08
Latitude 44.4692 ± 0.0081
Longitude 9.0637 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116488441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 915
Semi-minor axis of confidence ellipse (meter) 373
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 345
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83547
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 116488441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-18 12:30:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2022-09-22T22:47:40.93 3.0 undecidable manual Sg 8.46 0
IV.MCRV.HHZ. 2022-09-22T22:47:38.87 3.0 undecidable manual Pn 1.87 0
IV.FOSV.EHZ. 2022-09-22T22:46:55.91 3.0 undecidable manual Pn -0.58 0
IV.MGAB.HHZ. 2022-09-22T22:46:55.08 3.0 undecidable manual Pn 0.98 0
GU.EQUI.HHN. 2022-09-22T22:46:27.52 0.3 undecidable manual P 111 92.7405 50 0.26 64
IV.PLMA.HHZ. 2022-09-22T22:46:25.76 0.3 undecidable manual P 126 78.1662 50 0.75 56
GU.PCP.HHZ. 2022-09-22T22:46:25.32 0.6 undecidable manual S 281 41.7249 50 0 49
GU.CANO.HHE. 2022-09-22T22:46:24.11 0.3 undecidable manual P 246 71.6727 50 0.09 68
IV.MSSA.HHZ. 2022-09-22T22:46:24.28 0.6 undecidable manual S 115 39.7269 50 -0.51 44
IV.QLNO.HHE. 2022-09-22T22:46:21.70 0.3 undecidable manual P 254 59.0964 50 -0.37 66
IV.BOB.HNE. 2022-09-22T22:46:20.12 0.6 undecidable manual P 42 44.9217 50 0.22 47
GU.PCP.HHZ. 2022-09-22T22:46:19.27 0.3 undecidable manual P 281 41.7249 50 -0.13 72
GU.GORR.HHZ. 2022-09-22T22:46:19.86 0.6 undecidable manual S 50 23.754 111 -0.3 48
IV.MSSA.HHZ. 2022-09-22T22:46:18.89 0.3 undecidable manual P 115 39.7269 50 -0.21 71
GU.GORR.HHZ. 2022-09-22T22:46:16.39 0.3 undecidable manual P 50 23.754 111 -0.03 76
IT.GNV.HGE. 2022-09-22T22:46:16.40 0.6 undecidable manual S 248 11.1777 130 0.03 52
GU.GENL.EHN. 2022-09-22T22:46:15.80 0.6 undecidable manual S 227 10.1787 132 -0.32 49
GU.RNCA.HHZ. 2022-09-22T22:46:15.84 0.6 undecidable manual S 271 8.88 136 0.06 51
GU.RNCA.HHZ. 2022-09-22T22:46:14.09 0.1 undecidable manual P 271 8.88 136 0.2 100
IT.GNV.HGE. 2022-09-22T22:46:14.38 0.3 undecidable manual P 248 11.1777 130 0.14 75
GU.GENL.EHN. 2022-09-22T22:46:13.96 0.3 undecidable manual P 227 10.1787 132 -0.13 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RNCA.HHN. ML:1.5 0.0004535 1.76 AML other m 2022-09-22T22:46:16.01
GU.RNCA.HHE. ML:1.4 0.000368 0.08 AML other m 2022-09-22T22:46:16.12
IV.MSSA.HHN. ML:1.3 0.0000736 0.08 AML other m 2022-09-22T22:46:24.47
IV.MSSA.HHE. ML:1.5 0.000105 1.24 AML other m 2022-09-22T22:46:25.66
GU.GSCL.HHE. ML:1.7 0.00003595 1.76 AML other m 2022-09-22T22:46:53.03
IV.BDI.HHE. ML:1.7 0.0000337 1.16 AML other m 2022-09-22T22:46:54.74
GU.GSCL.HHN. ML:1.9 0.00005495 0.14 AML other m 2022-09-22T22:46:54.11
IV.BDI.HHN. ML:1.7 0.000029749999999999998 0.5 AML other m 2022-09-22T22:46:54.60
GU.POPM.HHE. ML:1.7 0.00002755 0.54 AML other m 2022-09-22T22:46:56.34
GU.POPM.HHN. ML:1.8 0.000035799999999999996 0.68 AML other m 2022-09-22T22:46:56.56
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