Earthquake with magnitude of ML 1.0 on date 31-01-2023 and time 07:34:39 (UTC) in region 5 km S Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km S Amatrice (RI), on

  • 31-01-2023 07:34:39 (UTC)
  • 31-01-2023 08:34:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5860, 13.2910 at 18 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 5 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 7 665 3864
Montereale AQ 8 2581 6445
Cittareale RI 11 482 6927
Accumoli RI 13 667 7594
Cagnano Amiterno AQ 15 1369 8963
Barete AQ 15 737 9700
Borbona RI 15 617 10317
Crognaleto TE 16 1297 11614
Pizzoli AQ 17 4326 15940
Posta RI 17 694 16634
Cortino TE 18 656 17290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 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 2023-01-31
07:34:39
42.5863 13.2912 18 2023-01-31
08:15:53
Sala Sismica INGV-Roma 113930791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-31 07:34:39 ± 0.13
Latitude 42.5863 ± 0.0036
Longitude 13.2912 ± 0.0049
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113930791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 433
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.33365
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 113930791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-31 08:15:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHN. 2023-01-31T07:34:53.04 0.6 undecidable manual S 347 37.0296 106 0.51 43
7F.SIB1.EHE. 2023-01-31T07:34:52.32 0.3 undecidable manual S 357 34.2435 108 0.5 65
7F.SIB2.EHE. 2023-01-31T07:34:51.56 0.3 undecidable manual S 2 33.8439 108 -0.16 70
7F.SIB3.EHE. 2023-01-31T07:34:51.37 0.3 undecidable manual S 357 32.0457 109 0.09 71
IV.GIGS.HHZ. 2023-01-31T07:34:50.11 0.1 undecidable manual S 123 27.3504 114 0 98
IV.NRCA.HHZ. 2023-01-31T07:34:50.74 0.3 undecidable manual S 332 30.9468 110 -0.26 69
IV.TERO.HHZ. 2023-01-31T07:34:49.71 0.3 undecidable manual S 81 25.8519 115 -0.03 73
IV.LNSS.HHZ. 2023-01-31T07:34:48.52 0.3 undecidable manual S 275 20.5683 123 0.02 74
IV.MTRA.EHE. 2023-01-31T07:34:48.10 0.3 undecidable manual S 24 20.7681 122 -0.45 68
IV.MC2.EHN. 2023-01-31T07:34:47.18 0.3 undecidable manual P 347 37.0296 106 -0.02 72
7F.SIB2.EHE. 2023-01-31T07:34:46.51 0.6 undecidable manual P 2 33.8439 108 -0.22 46
IV.CAMP.HHN. 2023-01-31T07:34:46.68 0.3 undecidable manual S 120 11.1777 143 0.03 75
IV.NRCA.HHZ. 2023-01-31T07:34:46.08 0.3 undecidable manual P 332 30.9468 110 -0.23 70
7F.SIB3.EHE. 2023-01-31T07:34:46.98 0.6 undecidable manual P 357 32.0457 109 0.51 43
IV.SMA1.EHZ. 2023-01-31T07:34:46.06 0.3 undecidable manual S 36 6.0939 159 0.08 75
7F.SIB1.EHE. 2023-01-31T07:34:46.65 0.3 undecidable manual P 357 34.2435 108 -0.14 71
IV.RM33.EHZ. 2023-01-31T07:34:46.56 0.3 undecidable manual S 216 10.5783 145 0 75
IV.GIGS.HHZ. 2023-01-31T07:34:45.76 0.1 undecidable manual P 123 27.3504 114 -0.04 97
IV.MTRA.EHE. 2023-01-31T07:34:45.16 1.0 undecidable manual P 24 20.7681 122 0.26 23
IV.TERO.HHZ. 2023-01-31T07:34:45.53 0.1 undecidable manual P 81 25.8519 115 -0.06 97
IV.LNSS.HHZ. 2023-01-31T07:34:44.68 0.3 undecidable manual P 275 20.5683 123 -0.19 71
IV.SMA1.EHZ. 2023-01-31T07:34:43.51 0.1 undecidable manual P 36 6.0939 159 0.09 100
IV.RM33.EHZ. 2023-01-31T07:34:43.84 0.1 undecidable manual P 216 10.5783 145 0.09 99
IV.CAMP.HHN. 2023-01-31T07:34:43.84 0.1 undecidable manual P 120 11.1777 143 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.4 0.000199 0.3 AML other m 2023-01-31T07:34:46.79
IV.SMA1.EHN. ML:1.0 0.0000838 0.56 AML other m 2023-01-31T07:34:46.84
IV.SMA1.EHE. ML:1.2 0.00014150000000000002 1.86 AML other m 2023-01-31T07:34:47.01
IV.RM33.EHE. ML:1.3 0.000144 1.36 AML other m 2023-01-31T07:34:47.86
IV.TERO.HHE. ML:1.1 0.00005475 0.06 AML other m 2023-01-31T07:34:49.91
IV.TERO.HHN. ML:1.1 0.00006735 0.06 AML other m 2023-01-31T07:34:49.97
IV.GIGS.HHE. ML:0.6 0.0000193689865 0.0576 AML other m 2023-01-31T07:34:50.20
IV.GIGS.HHN. ML:0.5 0.000016871169500000002 0.064 AML other m 2023-01-31T07:34:50.27
IV.NRCA.HHE. ML:1.2 0.000060173745 0.096 AML other m 2023-01-31T07:34:50.91
IV.NRCA.HHN. ML:0.8 0.00002529174 0.1024 AML other m 2023-01-31T07:34:51.90
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