Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 02-10-2023 and time 10:59:21 (UTC) in region 2 km SE Acqualagna (PU)

A magnitude ML 0.8 earthquake occured in region: 2 km SE Acqualagna (PU), on

  • 02-10-2023 10:59:21 (UTC)
  • 02-10-2023 12:59:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5970, 12.6830 at 17 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
Acqualagna PU 3 4393 4393
Cagli PU 6 8731 13124
Fermignano PU 9 8596 21720
Frontone PU 10 1300 23020
Pergola PU 13 6333 29353
Serra Sant'Abbondio PU 14 1027 30380
Piobbico PU 14 2029 32409
Cantiano PU 14 2245 34654
Fossombrone PU 14 9575 44229
Urbino PU 15 15019 59248
Urbania PU 15 7099 66347
Isola del Piano PU 18 594 66941
Fratte Rosa PU 18 966 67907
Sant'Ippolito PU 18 1563 69470
Peglio PU 19 696 70166
Montefelcino PU 20 2671 72837

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Fano (60888 inhabitants)
40 Km SW of Pesaro (94582 inhabitants)
53 Km S of Rimini (147750 inhabitants)
59 Km NE of Perugia (166134 inhabitants)
66 Km E of Arezzo (99543 inhabitants)
67 Km W of Ancona (100861 inhabitants)
70 Km SE of Cesena (96758 inhabitants)
71 Km N of Foligno (57155 inhabitants)
87 Km SE of Forlì (117913 inhabitants)
99 Km SE of Ravenna (159116 inhabitants)
100 Km SE of Faenza (58541 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 0.8 2023-10-02
10:59:21		 43.5972 12.6832 17 2023-10-02
11:11:10		 Sala Sismica INGV-Roma 121673191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-02 10:59:21 ± 0.12
Latitude 43.5972 ± 0.0054
Longitude 12.6832 ± 0.0062
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121673191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 299
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29408
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 121673191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-02 11:11:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
FR.SAOF.HHZ.00 2023-10-02T11:00:57.71 3.0 undecidable manual Sn 1.22 0
GU.MGRO.HHZ. 2023-10-02T11:00:49.22 3.0 undecidable manual Sn -2.95 0
IV.SPS2.HHZ. 2023-10-02T11:00:46.06 3.0 undecidable manual Pg 14.14 0
IV.CAR1.HHZ. 2023-10-02T11:00:39.74 3.0 negative manual Pg 8.09 0
IY.MCDA.HHZ.00 2023-10-02T11:00:38.45 3.0 negative manual Pn 0.51 0
OE.ARSA.BHZ. 2023-10-02T11:00:29.77 3.0 undecidable manual Pg 8.86 0
GU.IMI.HHZ. 2023-10-02T11:00:18.88 3.0 undecidable manual Pg 8.67 0
IV.LATB.EHZ. 2023-10-02T11:00:16.61 3.0 undecidable manual Sn 1.41 0
CH.FUSIO.HHZ. 2023-10-02T11:00:14.84 3.0 positive manual Pn -3.71 0
OX.MARN.HHZ. 2023-10-02T10:59:56.88 3.0 undecidable manual Pg 1.94 0
IV.SMA1.EHZ. 2023-10-02T10:59:48.10 3.0 undecidable manual Sn -2.3 0
IV.CERT.HHZ. 2023-10-02T10:59:43.10 3.0 negative manual Pn -1.21 0
IV.RCAV.EHZ. 2023-10-02T10:59:40.91 3.0 negative manual Pn -4.73 0
IV.SMA1.EHZ. 2023-10-02T10:59:34.24 3.0 negative manual P -2.3 0
IV.TSM2.DHZ.01 2023-10-02T10:59:31.20 0.6 undecidable manual S 215 27.1506 110 0.14 49
IV.ARVD.HHZ. 2023-10-02T10:59:30.06 0.6 undecidable manual S 118 23.4543 114 -0.09 50
IV.ATSC.EHZ. 2023-10-02T10:59:29.11 0.6 undecidable manual S 179 19.1697 121 -0.01 50
IV.ATVO.HHZ. 2023-10-02T10:59:28.16 1.0 undecidable manual P 223 32.6451 105 0.52 22
IV.ATPI.EHZ. 2023-10-02T10:59:27.11 1.0 undecidable manual P 234 27.8499 109 0.18 24
IV.PIEI.HHZ. 2023-10-02T10:59:27.88 0.3 undecidable manual S 240 13.7751 132 -0.07 74
IV.TSM1.DHZ.12 2023-10-02T10:59:27.12 1.0 undecidable manual P 194 28.749 108 0.05 24
IV.FRON.EHZ. 2023-10-02T10:59:27.36 0.3 undecidable manual S 159 9.4794 145 0.17 74
IV.ARVD.HHZ. 2023-10-02T10:59:26.05 0.6 undecidable manual P 118 23.4543 114 -0.26 48
IV.PE3.EHZ. 2023-10-02T10:59:26.18 1.0 undecidable manual P 306 18.5703 122 0.54 23
IV.MPAG.EHZ. 2023-10-02T10:59:26.98 0.3 undecidable manual S 60 7.0929 153 0.12 75
IV.ATPC.HNZ. 2023-10-02T10:59:26.26 1.0 undecidable manual P 235 22.3554 116 0.12 25
IV.NARO.HHZ. 2023-10-02T10:59:26.93 0.3 undecidable manual S 280 8.3805 148 -0.1 74
IV.TSM2.DHZ.01 2023-10-02T10:59:26.71 1.0 undecidable manual P 215 27.1506 110 -0.12 24
IV.ATSC.EHZ. 2023-10-02T10:59:25.57 0.3 undecidable manual P 179 19.1697 121 -0.15 73
IV.FRON.EHZ. 2023-10-02T10:59:24.66 0.6 undecidable manual P 159 9.4794 145 0.06 50
IV.PIEI.HHZ. 2023-10-02T10:59:24.91 0.6 negative manual P 240 13.7751 132 -0.13 49
IV.MPAG.EHZ. 2023-10-02T10:59:24.37 1.0 undecidable manual P 60 7.0929 153 -0.04 26
IV.NARO.HHZ. 2023-10-02T10:59:24.43 0.1 negative manual P 280 8.3805 148 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NARO.HHN. ML:0.8 0.00006555 0.28 AML other m 2023-10-02T10:59:27.21
IV.MPAG.EHE. ML:0.6 0.0000382 0.24 AML other m 2023-10-02T10:59:27.06
IV.NARO.HHE. ML:0.8 0.000054199999999999996 0.28 AML other m 2023-10-02T10:59:27.21
IV.FRON.EHN. ML:1.0 0.00008324999999999999 0.08 AML other m 2023-10-02T10:59:27.57
IV.FRON.EHE. ML:0.9 0.0000706 0.46 AML other m 2023-10-02T10:59:27.40
IV.MPAG.EHN. ML:0.7 0.00004575 1.28 AML other m 2023-10-02T10:59:27.20
IV.PIEI.HHN. ML:0.6 0.000029049999999999998 1.74 AML other m 2023-10-02T10:59:27.09
IV.PIEI.HHE. ML:0.8 0.000055 1.4 AML other m 2023-10-02T10:59:28.07
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