Earthquake with magnitude of ML 1.6 on date 16-10-2023 and time 08:46:00 (UTC) in region 3 km W Cagnano Amiterno (AQ)

A magnitude ML 1.6 earthquake occured in region: 3 km W Cagnano Amiterno (AQ), on

  • 16-10-2023 08:46:00 (UTC)
  • 16-10-2023 10:46:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4580, 13.1900 at 13 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
Cagnano Amiterno AQ 3 1369 1369
Barete AQ 8 737 2106
Borbona RI 8 617 2723
Montereale AQ 9 2581 5304
Pizzoli AQ 9 4326 9630
Antrodoco RI 10 2588 12218
Posta RI 11 694 12912
Micigliano RI 11 127 13039
Scoppito AQ 11 3727 16766
Capitignano AQ 12 665 17431
Borgo Velino RI 12 972 18403
Castel Sant'Angelo RI 15 1308 19711
Cittareale RI 18 482 20193
Campotosto AQ 19 542 20735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
46 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
92 Km NE of Velletri (53303 inhabitants)
97 Km SE of Perugia (166134 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 1.6 2023-10-16
08:46:00
42.4578 13.1898 13 2023-10-16
08:56:49
Sala Sismica INGV-Roma 122123381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-16 08:46:00 ± 0.08
Latitude 42.4578 ± 0.0027
Longitude 13.1898 ± 0.0061
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 122123381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 492
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 122123381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-16 08:56:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2023-10-16T08:46:12.93 0.6 undecidable manual S 61 38.4282 95 -0.01 48
IV.LNSS.HHZ. 2023-10-16T08:46:08.08 0.6 undecidable manual S 323 20.1687 104 -0.04 50
IV.FIAM.HHZ. 2023-10-16T08:46:08.51 0.6 undecidable manual S 196 21.867 102 -0.04 49
IV.SMA1.EHZ. 2023-10-16T08:46:08.90 0.6 undecidable manual S 32 22.5552 102 0.17 48
IV.TERO.HHZ. 2023-10-16T08:46:07.40 0.1 undecidable manual P 61 38.4282 95 -0.16 94
IV.FIAM.HHZ. 2023-10-16T08:46:05.12 0.3 undecidable manual P 196 21.867 102 0.1 73
IV.SMA1.EHZ. 2023-10-16T08:46:05.18 0.1 undecidable manual P 32 22.5552 102 0.06 98
IV.RM33.EHZ. 2023-10-16T08:46:04.87 0.6 undecidable manual S 20 5.994 149 -0.15 50
IV.LNSS.HHZ. 2023-10-16T08:46:04.68 0.3 undecidable manual P 323 20.1687 104 -0.09 74
IV.RM33.EHZ. 2023-10-16T08:46:03.10 0.1 undecidable manual P 20 5.994 149 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.8 0.000826 1.7 AML other m 2023-10-16T08:45:57.00
IV.RM33.EHE. ML:2.0 0.001284873 0.2432 AML other m 2023-10-16T08:46:05.61
IV.RM33.EHN. ML:1.6 0.0005893872499999999 0.1408 AML other m 2023-10-16T08:46:05.16
IV.RM33.HNN. ML:1.6 0.0005649408 0.0832 AML other m 2023-10-16T08:46:05.41
IV.LNSS.HHE. ML:1.6 0.0002415 0.98 AML other m 2023-10-16T08:46:08.11
IV.LNSS.HHN. ML:1.7 0.0003135 0.44 AML other m 2023-10-16T08:46:08.12
IV.FIAM.HHN. ML:1.3 0.0001245 1.42 AML other m 2023-10-16T08:46:09.03
IV.SMA1.EHE. ML:1.7 0.000316 0.42 AML other m 2023-10-16T08:46:09.25
IV.FIAM.HHE. ML:1.5 0.00019350000000000001 0.68 AML other m 2023-10-16T08:46:09.78
IV.SMA1.EHN. ML:1.5 0.00021100000000000003 0.42 AML other m 2023-10-16T08:46:10.38
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download