Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-03-2023 and time 07:30:09 (UTC) in region 2 km SW Cervia (RA)

A magnitude ML 1.7 earthquake occured in region: 2 km SW Cervia (RA), on

  • 17-03-2023 07:30:09 (UTC)
  • 17-03-2023 08:30:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2420, 12.3390 at 20 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
Cervia RA 2 28940 28940
Cesenatico FC 7 25796 54736
Gambettola FC 14 10660 65396
Cesena FC 14 96758 162154
Bellaria-Igea Marina RN 14 19519 181673
Gatteo FC 15 9068 190741
San Mauro Pascoli FC 16 11690 202431
Savignano sul Rubicone FC 17 17766 220197
Montiano FC 18 1716 221913
Forlimpopoli FC 18 13290 235203
Longiano FC 19 7126 242329
Bertinoro FC 19 11059 253388

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Cesena (96758 inhabitants)
23 Km SE of Ravenna (159116 inhabitants)
24 Km E of Forlì (117913 inhabitants)
27 Km NW of Rimini (147750 inhabitants)
37 Km E of Faenza (58541 inhabitants)
51 Km E of Imola (69797 inhabitants)
59 Km NW of Pesaro (94582 inhabitants)
70 Km NW of Fano (60888 inhabitants)
84 Km E of Bologna (386663 inhabitants)
87 Km SE of Ferrara (133155 inhabitants)
94 Km NE of Arezzo (99543 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 1.7 2023-03-17
07:30:09		 44.2422 12.3393 20 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116489121
Reviewed
Rev100 		ML 1.6 2023-03-17
07:30:09		 44.2528 12.2947 10 2023-03-17
08:05:33		 Sala Sismica INGV-Roma 115461421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-17 07:30:09 ± 0.22
Latitude 44.2422 ± 0.0099
Longitude 12.3393 ± 0.0100
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116489121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1159
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 1160.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 240
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.13670
Epicentral distance of station farthest from the epicenter (degree) 1.06480
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 116489121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-14 15:01:29

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 115461421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-17 08:05:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2023-03-17T07:30:39.80 0.3 undecidable manual S 158 96.126 96 1.75 33
IV.BADI.EHE. 2023-03-17T07:30:34.45 0.3 undecidable manual S 185 81.5517 98 0.26 69
IV.NARO.HHE. 2023-03-17T07:30:31.73 0.3 undecidable manual S 165 72.6717 99 -0.09 74
IV.EL6.EHZ. 2023-03-17T07:30:30.68 0.3 undecidable manual P 149 118.1928 95 1.19 45
IV.PARC.HHZ. 2023-03-17T07:30:29.64 0.6 undecidable manual S 187 66.2781 100 -0.52 45
IV.SFI.EHZ. 2023-03-17T07:30:27.25 0.3 undecidable manual S 227 54.2013 103 0.26 74
IV.LMD.HHZ. 2023-03-17T07:30:27.52 0.3 undecidable manual S 250 53.502 103 0.71 66
IV.ATSC.EHZ. 2023-03-17T07:30:26.14 0.3 undecidable manual P 163 94.9383 96 0.23 68
IV.PESA.HHE. 2023-03-17T07:30:26.84 0.3 undecidable manual S 130 52.0035 103 0.42 70
IV.SSFR.HHZ. 2023-03-17T07:30:25.86 0.3 undecidable manual P 158 96.126 96 -0.25 68
IV.ATMC.EHE. 2023-03-17T07:30:24.62 0.3 undecidable manual P 188 89.0442 97 -0.39 67
IV.FRON.EHE. 2023-03-17T07:30:24.44 0.3 undecidable manual P 159 86.0472 97 -0.12 71
IV.ATBU.HNE. 2023-03-17T07:30:24.50 0.3 undecidable manual P 169 86.6466 97 -0.15 71
IV.BADI.EHE. 2023-03-17T07:30:23.62 0.1 undecidable manual P 185 81.5517 98 -0.26 93
IV.RUFI.EHZ. 2023-03-17T07:30:23.71 0.3 undecidable manual P 236 79.9644 98 0.09 73
IV.PIEI.HHZ. 2023-03-17T07:30:23.16 0.3 undecidable manual P 169 79.9644 98 -0.46 67
IV.MPAG.HNE. 2023-03-17T07:30:22.60 0.3 undecidable manual P 154 75.8685 98 -0.4 69
IV.NARO.HHE. 2023-03-17T07:30:22.08 0.3 undecidable manual P 165 72.6717 99 -0.43 68
IV.CRE.HHN. 2023-03-17T07:30:22.67 0.3 undecidable manual P 204 75.7686 98 -0.31 69
IV.RSM2.HHZ. 2023-03-17T07:30:22.01 0.3 undecidable manual S 166 34.8429 111 -0.01 80
IV.APEC.HHZ. 2023-03-17T07:30:22.92 0.3 undecidable manual P 175 76.0683 98 -0.12 72
IV.PARC.HHZ. 2023-03-17T07:30:21.06 0.3 undecidable manual P 187 66.2781 100 -0.49 68
IV.SFI.EHZ. 2023-03-17T07:30:19.45 0.1 undecidable manual P 227 54.2013 103 -0.27 97
IV.LMD.HHZ. 2023-03-17T07:30:19.81 0.1 undecidable manual P 250 53.502 103 0.2 100
IV.PESA.HHE. 2023-03-17T07:30:19.75 0.3 undecidable manual P 130 52.0035 103 0.36 72
IV.BLLA.EHN. 2023-03-17T07:30:17.55 0.3 undecidable manual S 137 15.1737 138 -0.07 81
IV.RSM2.HHZ. 2023-03-17T07:30:16.97 0.3 undecidable manual P 166 34.8429 111 0.12 78
IV.BLLA.EHN. 2023-03-17T07:30:14.24 0.3 undecidable manual P 137 15.1737 138 -0.07 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:1.6 0.0000837 0.56 AML other m 2023-03-17T07:30:28.36
IV.SFI.EHN. ML:1.7 0.00010855000000000001 1.02 AML other m 2023-03-17T07:30:28.28
IV.LMD.HHN. ML:1.6 0.00009815 0.7 AML other m 2023-03-17T07:30:28.96
IV.LMD.HHE. ML:1.7 0.00011350000000000001 0.18 AML other m 2023-03-17T07:30:29.34
IV.PIEI.HHN. ML:1.6 0.00004825 0.76 AML other m 2023-03-17T07:30:35.40
IV.PIEI.HHE. ML:1.7 0.0000635 0.18 AML other m 2023-03-17T07:30:35.76
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