Earthquake with magnitude of ML 1.8 on date 02-10-2023 and time 16:33:23 (UTC) in region 7 km SE Comiso (RG)

A magnitude ML 1.8 earthquake occured in region: 7 km SE Comiso (RG), on

  • 02-10-2023 16:33:23 (UTC)
  • 02-10-2023 18:33:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.8940, 14.6490 at 9 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
Comiso RG 7 30156 30156
Ragusa RG 8 73313 103469
Modica RG 11 54633 158102
Vittoria RG 12 63339 221441
Scicli RG 12 27077 248518
Santa Croce Camerina RG 13 10823 259341
Chiaramonte Gulfi RG 16 8238 267579

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km W of Ragusa (73313 inhabitants)
11 Km W of Modica (54633 inhabitants)
12 Km SE of Vittoria (63339 inhabitants)
40 Km SE of Gela (75827 inhabitants)
60 Km W of Siracusa (122291 inhabitants)
78 Km SW of Catania (314555 inhabitants)
85 Km SE of Caltanissetta (63360 inhabitants)
92 Km SW of Acireale (52622 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 1.8 2023-10-02
16:33:23
36.8935 14.6492 9 2023-10-02
16:37:58
Sala Sismica INGV-Roma 121682521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-02 16:33:23 ± 0.1
Latitude 36.8935 ± 0.0063
Longitude 14.6492 ± 0.0056
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121682521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 662
Semi-minor axis of confidence ellipse (meter) 495
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 198
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48833
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 121682521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-02 16:37:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RESU.HHZ. 2023-10-02T16:33:54.77 3.0 undecidable manual S -0.3 0
IV.HLNI.HHZ. 2023-10-02T16:33:41.77 0.3 undecidable manual S 21 54.2013 50 0.59 62
IV.HAVL.HHZ. 2023-10-02T16:33:37.92 0.6 undecidable manual S 80 42.5241 50 -0.16 47
IV.HVZN.HHZ. 2023-10-02T16:33:34.85 0.6 undecidable manual S 11 32.1456 50 -0.44 45
IV.HLNI.HHZ. 2023-10-02T16:33:33.61 0.1 undecidable manual P 21 54.2013 50 -0.25 89
IV.ISPIC.HHZ. 2023-10-02T16:33:33.51 0.6 undecidable manual S 119 25.8519 110 0.13 48
IV.RAFF.HHZ. 2023-10-02T16:33:32.89 0.6 positive manual P 325 44.4222 50 0.53 43
IV.HAVL.HHZ. 2023-10-02T16:33:31.62 1.0 undecidable manual P 80 42.5241 50 -0.45 22
IV.HVZN.HHZ. 2023-10-02T16:33:30.43 0.3 negative manual P 11 32.1456 50 -0.03 73
IV.HVIT.HHZ. 2023-10-02T16:33:30.04 0.6 undecidable manual S 314 15.7731 121 -0.18 49
IV.CROCE.HNZ. 2023-10-02T16:33:29.17 0.6 undecidable manual S 236 12.1767 127 -0.02 51
IV.ISPIC.HHZ. 2023-10-02T16:33:29.25 0.6 undecidable manual P 119 25.8519 110 -0.11 48
IV.HMDC.HHZ. 2023-10-02T16:33:29.72 0.6 undecidable manual S 58 13.9749 124 0.04 50
IV.CROCE.HNZ. 2023-10-02T16:33:27.01 0.1 undecidable manual P 236 12.1767 127 0.07 100
IV.HMDC.HHZ. 2023-10-02T16:33:27.30 0.1 negative manual P 58 13.9749 124 0.08 100
IV.HVIT.HHZ. 2023-10-02T16:33:27.48 0.1 negative manual P 314 15.7731 121 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CROCE.HHN. ML:2.0 0.001081 0.14 AML other m 2023-10-02T16:33:29.36
IV.CROCE.HNN. ML:2.0 0.0013334999999999998 0.14 AML other m 2023-10-02T16:33:29.36
IV.CROCE.HHE. ML:1.8 0.000758 0.26 AML other m 2023-10-02T16:33:29.28
IV.CROCE.HNE. ML:1.9 0.0009595000000000001 0.26 AML other m 2023-10-02T16:33:29.28
IV.HMDC.HHE. ML:1.9 0.0008935 0.6 AML other m 2023-10-02T16:33:29.52
IV.HMDC.HNE. ML:1.9 0.0008209999999999999 1.6 AML other m 2023-10-02T16:33:29.03
IV.HMDC.HNN. ML:1.9 0.000861 1.46 AML other m 2023-10-02T16:33:29.95
IV.HVIT.HHN. ML:2.0 0.0010585 0.64 AML other m 2023-10-02T16:33:30.12
IV.HMDC.HHN. ML:2.1 0.00128 0.82 AML other m 2023-10-02T16:33:30.92
IV.HVIT.HHE. ML:1.9 0.0007765 0.3 AML other m 2023-10-02T16:33:31.57
IV.ISPIC.HNN. ML:1.6 0.0002505 1.44 AML other m 2023-10-02T16:33:33.74
IV.ISPIC.HHN. ML:1.6 0.000256 1.44 AML other m 2023-10-02T16:33:33.74
IV.ISPIC.HHE. ML:1.7 0.0003045 0.56 AML other m 2023-10-02T16:33:34.73
IV.ISPIC.HNE. ML:1.7 0.0003095 0.54 AML other m 2023-10-02T16:33:34.73
IV.HVZN.HHN. ML:1.6 0.000164 0.76 AML other m 2023-10-02T16:33:37.15
IV.HVZN.HNN. ML:1.6 0.0002 0.5 AML other m 2023-10-02T16:33:37.54
IV.HAVL.HHN. ML:1.8 0.000191 1.36 AML other m 2023-10-02T16:33:39.24
IV.HAVL.HHE. ML:1.9 0.0002305 0.16 AML other m 2023-10-02T16:33:39.61
IV.HVZN.HHE. ML:1.5 0.00014700000000000002 0.58 AML other m 2023-10-02T16:33:40.66
IV.HVZN.HNE. ML:1.6 0.0001885 1.36 AML other m 2023-10-02T16:33:41.68
IV.HLNI.HHE. ML:1.8 0.00014549999999999999 1.8 AML other m 2023-10-02T16:33:42.06
IV.HLNI.HHN. ML:2.0 0.00026000000000000003 0.68 AML other m 2023-10-02T16:33:43.52
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