Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-12-2023 and time 07:35:14 (UTC) in region 4 km SW Serra San Quirico (AN)

A magnitude ML 1.0 earthquake occured in region: 4 km SW Serra San Quirico (AN), on

  • 20-12-2023 07:35:14 (UTC)
  • 20-12-2023 08:35:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4180, 13.0000 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Serra San Quirico AN 4 2850 2850
Genga AN 5 1797 4647
Mergo AN 7 1037 5684
Poggio San Vicino MC 8 246 5930
Rosora AN 9 1985 7915
Cupramontana AN 10 4756 12671
Arcevia AN 10 4612 17283
Cerreto d'Esi AN 11 3817 21100
Castelplanio AN 11 3540 24640
Apiro MC 11 2280 26920
Sassoferrato AN 12 7285 34205
Fabriano AN 12 31480 65685
Maiolati Spontini AN 12 6248 71933
Poggio San Marcello AN 12 693 72626
Montecarotto AN 13 1987 74613
Monte Roberto AN 13 3061 77674
Castelbellino AN 14 4947 82621
Serra de' Conti AN 14 3746 86367
San Paolo di Jesi AN 15 933 87300
Staffolo AN 15 2253 89553
Matelica MC 18 9981 99534
Cingoli MC 18 10352 109886
Barbara AN 18 1368 111254
Esanatoglia MC 19 2034 113288

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km S of Fano (60888 inhabitants)
47 Km W of Ancona (100861 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
60 Km NE of Perugia (166134 inhabitants)
80 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
100 Km N of Terni (111501 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
Reviewed
Rev100 		ML 1.0 2023-12-20
07:35:14		 43.4182 12.9998 13 2023-12-20
08:05:59		 Sala Sismica INGV-Roma 124155571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-20 07:35:14 ± 0.33
Latitude 43.4182 ± 0.0090
Longitude 12.9998 ± 0.0136
Depth (km) 13 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124155571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1253
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 1250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16907
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.6
Num. used stations 12
Type of magnitude ML
Reference to an origin 124155571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-20 08:05:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2023-12-20T07:36:55.78 3.0 undecidable manual Pg 18.6 0
IV.HPAC.HHZ. 2023-12-20T07:36:43.28 3.0 undecidable manual Pn 0.62 0
IV.ESML.HHZ. 2023-12-20T07:36:42.66 3.0 positive manual Pg 12.45 0
IV.ECTS.HHZ. 2023-12-20T07:36:40.35 3.0 undecidable manual Pg 12.87 0
IV.RESU.HHZ. 2023-12-20T07:36:39.56 3.0 undecidable manual Pg 11.59 0
NI.VINO.HHZ. 2023-12-20T07:36:32.90 3.0 undecidable manual Sg 9.34 0
OX.VARN.HHZ. 2023-12-20T07:36:28.42 3.0 undecidable manual Sg 10.46 0
IV.CAVT.HHZ. 2023-12-20T07:36:22.71 3.0 undecidable manual Pn -3.72 0
NI.PALA.HHZ. 2023-12-20T07:36:21.86 3.0 undecidable manual Sn -1.05 0
GU.GBOS.HHZ. 2023-12-20T07:36:11.94 3.0 undecidable manual Pg 12.62 0
IV.MGR.HHZ. 2023-12-20T07:36:04.81 3.0 negative manual Pn 3.53 0
IV.SCHR.EHZ. 2023-12-20T07:36:03.10 3.0 undecidable manual Pn -0.54 0
FR.AJAC.HHZ.00 2023-12-20T07:35:59.72 3.0 undecidable manual Pg 5.59 0
NI.POLC.HHZ. 2023-12-20T07:35:46.50 3.0 positive manual Pn 0.96 0
IV.ARRO.EHZ. 2023-12-20T07:35:37.80 3.0 undecidable manual Sg 0.89 0
IV.FIAM.HNZ. 2023-12-20T07:35:24.37 3.0 undecidable manual Pn -1.73 0
IV.SFI.EHZ. 2023-12-20T07:35:22.06 3.0 undecidable manual P -1.22 0
IV.CING.HHZ. 2023-12-20T07:35:22.00 0.6 undecidable manual S 107 16.4724 107 0.44 47
IV.SNTG.HHZ. 2023-12-20T07:35:22.30 0.6 undecidable manual S 195 18.7701 103 0.16 50
IV.EL6.EHZ. 2023-12-20T07:35:20.65 0.6 undecidable manual S 140 12.876 118 -0.01 52
IV.ARVD.HHZ. 2023-12-20T07:35:19.99 0.6 undecidable manual S 332 9.9789 129 -0.05 52
IV.SNTG.HHZ. 2023-12-20T07:35:19.06 0.6 undecidable manual P 195 18.7701 103 0.09 51
IV.CING.HHZ. 2023-12-20T07:35:18.41 0.6 positive manual P 107 16.4724 107 -0.22 50
IV.ARVD.HHZ. 2023-12-20T07:35:17.89 0.3 undecidable manual P 332 9.9789 129 0.13 77
IV.EL6.EHZ. 2023-12-20T07:35:17.88 0.1 undecidable manual P 140 12.876 118 -0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:0.4 0.00002815 1.12 AML other m 2023-12-20T07:35:21.00
IV.ARVD.HHE. ML:0.4 0.00002533527 0.1408 AML other m 2023-12-20T07:35:21.51
IV.SNTG.HHE. ML:0.5 0.0000266 0.26 AML other m 2023-12-20T07:35:22.55
IV.SNTG.HHN. ML:0.8 0.00004405000000000001 0.16 AML other m 2023-12-20T07:35:22.78
IV.CING.HHN. ML:0.4 0.000022228925 0.1792 AML other m 2023-12-20T07:35:23.72
IV.CING.HHE. ML:0.3 0.000013878221999999999 0.1408 AML other m 2023-12-20T07:35:24.60
IV.ARRO.EHN. ML:1.5 0.0000336 1.82 AML other m 2023-12-20T07:35:40.00
IV.ARRO.EHE. ML:1.4 0.00002361 1.58 AML other m 2023-12-20T07:35:41.01
IV.CING.HNE. ML:2.7 0.00418607 0.64 AML other m 2023-12-20T07:35:22.70
IV.CING.HNN. ML:2.8 0.005554996 1.0688 AML other m 2023-12-20T07:35:21.56
IV.SNTG.HNE. ML:1.2 0.00010294638 0.7168 AML other m 2023-12-20T07:35:23.70
IV.SNTG.HNN. ML:1.3 0.00013471005 0.7488 AML other m 2023-12-20T07:35:27.65
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