Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 11-10-2023 and time 22:43:16 (Italy) in region Costa Marchigiana Picena (Ascoli Piceno)

A magnitude ML 1.3 earthquake occured in region: Costa Marchigiana Picena (Ascoli Piceno), on

  • 11-10-2023 20:43:16 (UTC)
  • 11-10-2023 22:43:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0460, 14.1330 at 44 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km NE of Teramo (54892 inhabitants)
59 Km N of Montesilvano (53738 inhabitants)
65 Km N of Pescara (121014 inhabitants)
77 Km N of Chieti (51815 inhabitants)
81 Km SE of Ancona (100861 inhabitants)
98 Km NE of L'Aquila (69753 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 1.3 2023-10-11
20:43:16		 43.0463 14.1332 44 2023-10-11
20:51:02		 Sala Sismica INGV-Roma 121995771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-11 20:43:16 ± 0.55
Latitude 43.0463 ± 0.0216
Longitude 14.1332 ± 0.0295
Depth (km) 44 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121995771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2562
Semi-minor axis of confidence ellipse (meter) 824
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 2560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 309
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76352
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 121995771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-11 20:51:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.MARN.HHZ. 2023-10-11T20:44:49.16 3.0 undecidable manual Sn -0.64 0
CH.MUGIO.HHZ. 2023-10-11T20:44:41.08 3.0 negative manual Pg 12.91 0
AC.SRN.HHZ. 2023-10-11T20:44:40.10 3.0 undecidable manual Pn -1.27 0
7C.SPAOL.HNZ. 2023-10-11T20:44:39.66 3.0 negative manual Pn -0.63 0
GU.IMI.HHZ. 2023-10-11T20:44:29.85 3.0 undecidable manual Pn 3.15 0
IV.CSNT.HHZ. 2023-10-11T20:44:20.79 3.0 undecidable manual Sg 3.97 0
IV.PTRP.HHZ. 2023-10-11T20:44:13.00 3.0 undecidable manual Pg 7.57 0
IX.SCL3.EHZ.02 2023-10-11T20:44:05.28 3.0 negative manual Pg 4.85 0
MN.TRI.HHZ. 2023-10-11T20:44:01.89 3.0 undecidable manual Pn -1.66 0
IV.SRES.HHZ. 2023-10-11T20:43:56.26 3.0 undecidable manual Sn -2.45 0
IV.NARO.HHZ. 2023-10-11T20:43:53.41 3.0 undecidable manual Sn -3.83 0
IV.CSP1.EHZ. 2023-10-11T20:43:41.44 0.6 undecidable manual S 274 75.369 101 1.1 40
IV.SMA1.EHZ. 2023-10-11T20:43:41.54 0.6 undecidable manual S 235 79.6647 100 0.3 50
IV.MMO1.EHZ. 2023-10-11T20:43:37.74 0.6 undecidable manual S 256 67.4769 104 -0.93 38
IV.TERO.HHZ. 2023-10-11T20:43:37.86 0.6 undecidable manual S 223 63.6918 106 -0.03 53
IV.MF5.EHZ. 2023-10-11T20:43:35.84 0.6 undecidable manual S 263 55.0005 111 -0.26 51
IV.OFFI.HHZ. 2023-10-11T20:43:33.35 0.6 undecidable manual S 251 38.3283 126 0.41 49
IV.FDMO.HHZ. 2023-10-11T20:43:31.47 1.0 negative manual P 270 84.7485 99 -0.04 25
IV.SMA1.EHZ. 2023-10-11T20:43:30.82 1.0 positive manual P 235 79.6647 100 -0.05 25
IV.CSP1.EHZ. 2023-10-11T20:43:30.51 1.0 undecidable manual P 274 75.369 101 0.15 26
IV.MMO1.EHZ. 2023-10-11T20:43:28.93 1.0 negative manual P 256 67.4769 104 -0.46 24
IV.TERO.HHZ. 2023-10-11T20:43:28.60 0.1 undecidable manual P 223 63.6918 106 -0.34 100
IV.MF5.EHZ. 2023-10-11T20:43:27.72 1.0 positive manual P 263 55.0005 111 -0.19 26
IV.OFFI.HHZ. 2023-10-11T20:43:26.24 0.3 undecidable manual P 251 38.3283 126 0.16 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OFFI.HHE. ML:1.8 0.00012645 0.38 AML other m 2023-10-11T20:43:34.20
IV.OFFI.HHN. ML:1.6 0.00009065000000000001 0.44 AML other m 2023-10-11T20:43:38.32
IV.TERO.HHE. ML:1.0 0.000014200000000000001 0.72 AML other m 2023-10-11T20:43:40.36
IV.TERO.HHN. ML:1.0 0.0000149 1.56 AML other m 2023-10-11T20:43:46.08
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