Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-01-2023 and time 01:10:23 (UTC) in region Costa Marchigiana Anconetana (Ancona)

A magnitude ML 1.4 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 04-01-2023 01:10:23 (UTC)
  • 04-01-2023 02:10:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9380, 13.3540 at 7 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Fano (60888 inhabitants)
35 Km E of Pesaro (94582 inhabitants)
38 Km NW of Ancona (100861 inhabitants)
65 Km E of Rimini (147750 inhabitants)
92 Km E of Cesena (96758 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 1.4 2023-01-04
01:10:23		 43.9377 13.3537 7 2024-03-01
17:17:58		 Bollettino Sismico Italiano INGV 115143801
Reviewed
Rev100 		Md 2.1
ML 1.5 		2023-01-04
01:10:23		 43.9613 13.3542 7 2023-01-04
02:44:52		 Sala Sismica INGV-Roma 113295361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-04 01:10:23 ± 0.25
Latitude 43.9377 ± 0.0099
Longitude 13.3537 ± 0.0100
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115143801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1206
Semi-minor axis of confidence ellipse (meter) 416
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 1210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 244
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 31
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) 0.79230
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 115143801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-29 22:26:42

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 113295361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-04 02:44:52

Md:2.1

Field Value
Value 2.1
Uncertainty 0.0
Num. used stations 1
Type of magnitude Md
Reference to an origin 113295361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-04 02:44:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2023-01-04T01:11:29.15 3.0 undecidable manual Sn -2.41 0
IV.AOI.HHE. 2023-01-04T01:10:39.91 0.6 undecidable manual S 155 47.3193 50 0.05 50
IV.FOSV.HNE. 2023-01-04T01:10:39.44 1.0 undecidable manual P 214 85.7475 50 0.41 22
IV.ATPC.HHE. 2023-01-04T01:10:39.96 1.0 undecidable manual P 235 87.9453 50 0.58 21
IV.COR1.HNN. 2023-01-04T01:10:39.56 1.0 undecidable manual S 220 44.2224 50 0.56 23
IV.SNTG.HHE. 2023-01-04T01:10:38.27 1.0 undecidable manual P 204 82.6506 50 -0.29 22
IV.CRTC.HNE. 2023-01-04T01:10:38.17 1.0 undecidable manual S 244 42.0246 50 -0.27 24
IV.PIEI.HNN. 2023-01-04T01:10:38.38 1.0 undecidable manual P 236 79.365 50 0.33 22
IV.PESA.HHE. 2023-01-04T01:10:38.73 0.6 undecidable manual S 271 41.0256 50 0.57 46
IV.ATSC.EHE. 2023-01-04T01:10:38.35 1.0 undecidable manual P 223 78.1662 50 0.48 22
IV.ATBU.EHZ. 2023-01-04T01:10:38.74 0.6 undecidable manual P 232 82.4508 50 0.21 45
Y1.T1743.HNN. 2023-01-04T01:10:37.27 1.0 undecidable manual S 255 38.5281 50 -0.23 25
Y1.T1742.EHZ. 2023-01-04T01:10:37.76 0.6 undecidable manual S 199 37.5291 101 0.57 43
IV.PE3.EHE. 2023-01-04T01:10:37.53 1.0 undecidable manual P 249 73.6707 50 0.35 22
IV.PCRO.HNE. 2023-01-04T01:10:37.50 0.6 undecidable manual S 159 39.3273 50 -0.2 49
IV.FRON.EHZ. 2023-01-04T01:10:36.02 0.3 undecidable manual P 227 68.5758 50 -0.37 67
IV.EL6.EHZ. 2023-01-04T01:10:36.37 0.3 undecidable manual P 197 70.4739 50 -0.31 68
IV.NARO.HHN. 2023-01-04T01:10:36.51 0.3 undecidable manual P 240 71.7726 50 -0.37 67
IV.CING.HNZ. 2023-01-04T01:10:35.46 0.3 undecidable manual P 192 63.5919 50 -0.17 71
Y1.T1741.HNZ. 2023-01-04T01:10:35.01 1.0 undecidable manual S 231 32.6451 103 -0.51 24
IV.MPAG.EHZ. 2023-01-04T01:10:34.47 1.0 undecidable manual P 234 58.5969 50 -0.38 23
IV.ARVD.HHE. 2023-01-04T01:10:34.42 0.3 undecidable manual P 214 58.8966 50 -0.48 67
IV.AOI.HHE. 2023-01-04T01:10:33.26 0.3 undecidable manual P 155 47.3193 50 0.14 74
IV.SENI.HNN. 2023-01-04T01:10:33.51 0.6 undecidable manual S 201 27.5502 105 -0.29 50
IV.PCRO.HNE. 2023-01-04T01:10:32.36 1.0 undecidable manual P 159 39.3273 50 0.48 23
IV.PESA.HHE. 2023-01-04T01:10:32.20 0.3 undecidable manual P 271 41.0256 50 0.06 76
IV.COR1.HNN. 2023-01-04T01:10:32.74 0.3 undecidable manual P 220 44.2224 50 0.11 75
IV.CRTC.HNE. 2023-01-04T01:10:32.20 0.3 undecidable manual P 244 42.0246 50 -0.1 75
Y1.T1742.EHZ. 2023-01-04T01:10:31.86 0.1 undecidable manual P 199 37.5291 101 0.28 96
Y1.T1743.HNN. 2023-01-04T01:10:31.58 0.3 undecidable manual P 255 38.5281 50 -0.18 75
Y1.T1741.HNZ. 2023-01-04T01:10:30.74 0.1 undecidable manual P 231 32.6451 103 0.12 100
IV.SENI.HNN. 2023-01-04T01:10:29.80 0.3 undecidable manual P 201 27.5502 105 0.17 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHN. ML:1.4 0.000039017741 4.34 AML other m 2023-01-04T01:10:48.20
IV.EL6.EHE. ML:1.2 0.000027141385 3.02 AML other m 2023-01-04T01:10:46.88
IV.MML1.EHN. ML:1.3 0.00001826472 6.04 AML other m 2023-01-04T01:10:56.69
IV.CSP1.EHE. ML:1.6 0.000046341755 3.64 AML other m 2023-01-04T01:10:56.85
IV.CSP1.EHN. ML:1.6 0.00004652075 5.98 AML other m 2023-01-04T01:10:55.82
IV.MML1.EHE. ML:1.0 0.0000108591725 0.76 AML other m 2023-01-04T01:10:55.83
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