Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 23-02-2023 and time 06:37:21 (UTC) in region 3 km NE Pollenza (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km NE Pollenza (MC), on

  • 23-02-2023 06:37:21 (UTC)
  • 23-02-2023 07:37:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2920, 13.3700 at 8 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
Pollenza MC 3 6618 6618
Treia MC 5 9403 16021
Macerata MC 7 42473 58494
Appignano MC 8 4213 62707
Montecassiano MC 10 7125 69832
Urbisaglia MC 11 2628 72460
Petriolo MC 11 1998 74458
Tolentino MC 12 20069 94527
Corridonia MC 12 15430 109957
Colmurano MC 14 1263 111220
Loro Piceno MC 15 2401 113621
Montefano MC 15 3541 117162
Mogliano MC 15 4696 121858
Cingoli MC 15 10352 132210
Filottrano AN 16 9499 141709
Ripe San Ginesio MC 17 852 142561
San Severino Marche MC 17 12726 155287
Montelupone MC 17 3596 158883
Morrovalle MC 17 10195 169078
Belforte del Chienti MC 18 1886 170964
Francavilla d'Ete FM 18 964 171928
Massa Fermana FM 18 963 172891
Recanati MC 19 21349 194240
Montappone FM 19 1682 195922
Serrapetrona MC 19 966 196888
Monte San Giusto MC 19 8191 205079
Camporotondo di Fiastrone MC 20 563 205642

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Ancona (100861 inhabitants)
66 Km NE of Foligno (57155 inhabitants)
68 Km SE of Fano (60888 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
78 Km SE of Pesaro (94582 inhabitants)
82 Km E of Perugia (166134 inhabitants)
100 Km NE 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
Bulletin
Rev1000 		ML 0.9 2023-02-23
06:37:21		 43.2925 13.3695 9 2024-03-01
17:17:57		 Bollettino Sismico Italiano INGV 115068901
Reviewed
Rev100 		ML 1.8 2023-02-23
06:37:21		 43.2927 13.3538 9 2023-02-23
06:46:16		 Sala Sismica INGV-Roma 114724951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-23 06:37:21 ± 0.19
Latitude 43.2925 ± 0.0072
Longitude 13.3695 ± 0.0136
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 115068901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1123
Semi-minor axis of confidence ellipse (meter) 707
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 239
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66190
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.6
Num. used stations 12
Type of magnitude ML
Reference to an origin 115068901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-03-07 12:54:56

ML:1.8

Field Value
Value 1.8
Uncertainty 1.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 114724951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-23 06:46:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRP.HHZ. 2023-02-23T06:39:11.01 3.0 undecidable manual Sg 14.73 0
IV.MCRV.HHZ. 2023-02-23T06:38:51.23 3.0 undecidable manual Sg 9.07 0
IV.LATB.EHZ. 2023-02-23T06:38:13.37 3.0 undecidable manual Sn -4.28 0
IV.POFI.HNZ. 2023-02-23T06:38:10.92 3.0 undecidable manual S -0.84 0
IV.MCIV.CHZ. 2023-02-23T06:38:07.00 3.0 undecidable manual S -0.74 0
OX.CAE.HHZ. 2023-02-23T06:38:07.72 3.0 negative manual Pn -0.41 0
OX.VARN.HHZ. 2023-02-23T06:38:07.46 3.0 positive manual Pn -1.38 0
IV.FREG.EHZ. 2023-02-23T06:38:06.83 3.0 undecidable manual Pn -1.65 0
IV.IMOL.HNZ. 2023-02-23T06:37:52.79 3.0 negative manual Pg 1.24 0
IV.SMA1.EHZ. 2023-02-23T06:37:44.39 0.6 undecidable manual S 182 73.4709 50 0.65 38
IV.NRCA.HHZ. 2023-02-23T06:37:39.27 0.3 undecidable manual S 202 55.0005 50 0.47 62
IV.MC2.EHZ. 2023-02-23T06:37:36.61 0.6 undecidable manual S 199 44.7219 50 0.54 41
IV.MMO1.EHZ. 2023-02-23T06:37:35.94 0.3 undecidable manual S 185 43.7229 50 0.13 68
IV.FDMO.HHZ. 2023-02-23T06:37:33.42 0.3 undecidable manual S 219 36.4413 50 -0.44 65
IV.MML1.EHZ. 2023-02-23T06:37:33.99 0.3 undecidable manual S 238 37.8288 50 -0.23 68
IV.SMA1.EHZ. 2023-02-23T06:37:33.60 0.6 undecidable manual P 182 73.4709 50 -0.57 39
IV.NRCA.HHZ. 2023-02-23T06:37:31.03 0.3 undecidable manual P 202 55.0005 50 -0.28 65
IV.CSP1.EHZ. 2023-02-23T06:37:30.59 0.3 undecidable manual S 211 25.9518 108 0.04 72
IV.MC2.EHZ. 2023-02-23T06:37:29.45 0.3 undecidable manual P 199 44.7219 50 -0.29 66
IV.MMO1.EHZ. 2023-02-23T06:37:29.86 0.3 undecidable manual P 185 43.7229 50 0.28 66
IV.EL6.EHZ. 2023-02-23T06:37:29.32 0.3 undecidable manual S 281 21.9669 111 0.06 72
IV.FDMO.HHZ. 2023-02-23T06:37:28.20 0.1 undecidable manual P 219 36.4413 50 -0.26 90
IV.MML1.EHZ. 2023-02-23T06:37:28.56 0.6 undecidable manual P 238 37.8288 50 -0.11 46
IV.CING.HHZ. 2023-02-23T06:37:27.91 0.3 undecidable manual S 303 16.7721 117 0.3 69
IV.CSP1.EHZ. 2023-02-23T06:37:26.45 0.3 undecidable manual P 211 25.9518 108 -0.1 71
IV.EL6.EHZ. 2023-02-23T06:37:25.91 0.1 undecidable manual P 281 21.9669 111 0.11 95
IV.CING.HHZ. 2023-02-23T06:37:25.05 0.3 undecidable manual P 303 16.7721 117 0.2 71
IV.TRE1.HNE. 2023-02-23T06:37:24.24 0.3 undecidable manual S 294 4.995 149 -0.25 71
IV.TRE1.HNE. 2023-02-23T06:37:23.05 0.1 undecidable manual P 294 4.995 149 0 100
IV.PP3.EHZ. 2023-02-23T06:37:15.94 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHN. ML:0.5 0.0000296 0.4 AML other m 2023-02-23T06:37:28.41
IV.CING.HHE. ML:0.6 0.000032550000000000005 0.92 AML other m 2023-02-23T06:37:28.59
IV.FDMO.HHN. ML:0.4 0.000011900000000000001 0.38 AML other m 2023-02-23T06:37:33.74
IV.FDMO.HHE. ML:0.7 0.000019885 1.22 AML other m 2023-02-23T06:37:34.64
IV.MML1.EHN. ML:0.8 0.00002515 0.58 AML other m 2023-02-23T06:37:34.10
IV.MML1.EHE. ML:0.7 0.00001965 0.6 AML other m 2023-02-23T06:37:34.54
IV.NRCA.HHE. ML:0.9 0.000019799999999999997 0.62 AML other m 2023-02-23T06:37:42.64
IV.NRCA.HHN. ML:0.8 0.0000166 0.56 AML other m 2023-02-23T06:37:42.66
OX.VARN.HHN. ML:2.6 0.0000465 1.88 AML other m 2023-02-23T06:38:10.94
OX.VARN.HHE. ML:2.7 0.0000498 0.54 AML other m 2023-02-23T06:38:10.47
OX.CAE.HHE. ML:2.5 0.0000373 1.78 AML other m 2023-02-23T06:38:11.05
OX.CAE.HHN. ML:2.5 0.00003505 0.16 AML other m 2023-02-23T06:38:11.20
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