Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 02-09-2020 and time 04:01:15 (Italy) in region 9 km S Palazzolo Acreide (SR)

A magnitude ML 2.1 earthquake occured in region: 9 km S Palazzolo Acreide (SR), on

  • 02-09-2020 02:01:15 (UTC)
  • 02-09-2020 04:01:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.9850, 14.9340 at 22 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
Palazzolo Acreide SR 9 8808 8808
Buscemi SR 12 1051 9859
Canicattini Bagni SR 13 7109 16968
Cassaro SR 14 821 17789
Giarratana RG 14 3048 20837
Ferla SR 15 2523 23360
Noto SR 16 23913 47273
Buccheri SR 17 1999 49272
Rosolini SR 18 21427 70699
Monterosso Almo RG 19 3032 73731
Ragusa RG 19 73313 147044
Avola SR 20 31708 178752

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Ragusa (73313 inhabitants)
21 Km NE of Modica (54633 inhabitants)
33 Km W of Siracusa (122291 inhabitants)
35 Km E of Vittoria (63339 inhabitants)
59 Km S of Catania (314555 inhabitants)
61 Km E of Gela (75827 inhabitants)
73 Km S of Acireale (52622 inhabitants)
96 Km SE of Caltanissetta (63360 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 2.1 2020-09-02
02:01:15		 36.9853 14.9338 22 2021-02-26
14:55:54		 Bollettino Sismico Italiano INGV 82585621
Reviewed
Rev100 		ML 2.2 2020-09-02
02:01:15		 36.9917 14.9367 26 2020-09-02
02:10:09		 Sala Sismica INGV-Roma 82547991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-02 02:01:15 ± 0.27
Latitude 36.9853 ± 0.0081
Longitude 14.9338 ± 0.0135
Depth (km) 22 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82585621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1199
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 1200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.55
Epicentral distance of station closest to the epicenter (degree) 0.15019
Epicentral distance of station farthest from the epicenter (degree) 1.05401
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 82547991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-02 02:10:09

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 82585621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-30 10:30:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NOV.HHZ. 2020-09-02T02:01:35.33 0.3 undecidable manual P 9 116.994 96 0.31 60
IV.RAFF.HHZ. 2020-09-02T02:01:34.62 0.6 undecidable manual S 298 56.9985 104 1.11 33
IV.ECTS.HHZ. 2020-09-02T02:01:32.72 0.3 undecidable manual P 9 100.8213 97 0.18 64
IV.GALF.HHZ. 2020-09-02T02:01:31.11 0.3 undecidable manual P 338 86.7465 99 0.72 56
IV.CPTP.HHZ. 2020-09-02T02:01:31.27 0.3 undecidable manual P 305 82.6506 99 1.49 38
IV.CLTA.HHE. 2020-09-02T02:01:31.10 0.3 undecidable manual P 283 88.1451 98 0.5 60
IV.AGST.EHZ. 2020-09-02T02:01:29.00 0.6 undecidable manual S 41 39.7269 111 -0.12 48
IV.EPOZ.HHZ. 2020-09-02T02:01:29.76 0.3 undecidable manual P 16 79.365 99 0.48 62
IV.ENIC.HHE. 2020-09-02T02:01:29.04 0.3 undecidable manual P 6 72.0723 101 0.88 54
IV.HLNI.HHZ. 2020-09-02T02:01:28.40 0.3 undecidable manual S 352 40.626 111 -0.95 54
IV.HAGA.HHZ. 2020-09-02T02:01:28.60 0.3 undecidable manual S 30 38.5281 112 -0.23 70
IV.CROCE.HHZ. 2020-09-02T02:01:28.20 0.3 undecidable manual S 245 39.2274 112 -0.8 60
IT.LNT.HGE. 2020-09-02T02:01:27.60 0.6 undecidable manual S 10 34.1436 115 -0.15 48
IV.HPAC.HHZ. 2020-09-02T02:01:27.90 0.3 undecidable manual S 163 32.0457 117 0.65 63
IV.SSY.HHZ. 2020-09-02T02:01:25.30 0.3 undecidable manual S 33 22.755 128 0.15 75
IV.MEU.EHZ. 2020-09-02T02:01:25.24 0.3 undecidable manual S 327 16.6722 138 1.28 49
IV.HVZN.HNZ. 2020-09-02T02:01:25.70 0.3 undecidable manual S 318 28.8489 120 -0.79 60
IV.RAFF.HHZ. 2020-09-02T02:01:25.79 0.1 undecidable manual P 298 56.9985 104 -0.1 94
IV.ISPIC.EHZ. 2020-09-02T02:01:24.81 0.6 undecidable manual S 187 22.8549 128 -0.37 47
IV.AGST.EHZ. 2020-09-02T02:01:23.05 0.1 undecidable manual P 41 39.7269 111 -0.3 92
IV.HPAC.HHZ. 2020-09-02T02:01:22.53 0.1 undecidable manual P 163 32.0457 117 0.25 94
IV.MEU.EHZ. 2020-09-02T02:01:22.03 0.1 undecidable manual P 327 16.6722 138 1.65 52
IT.LNT.HGE. 2020-09-02T02:01:22.24 0.3 undecidable manual P 10 34.1436 115 -0.32 69
IV.CROCE.HHZ. 2020-09-02T02:01:22.51 0.1 undecidable manual P 245 39.2274 112 -0.78 80
IV.HAGA.HHZ. 2020-09-02T02:01:22.83 0.1 undecidable manual P 30 38.5281 112 -0.36 91
IV.HLNI.HHZ. 2020-09-02T02:01:22.79 0.1 undecidable manual P 352 40.626 111 -0.69 81
IV.SSY.HHZ. 2020-09-02T02:01:21.02 0.1 undecidable manual P 33 22.755 128 -0.04 100
IV.ISPIC.EHZ. 2020-09-02T02:01:20.85 0.1 undecidable manual P 187 22.8549 128 -0.23 97
IV.HVZN.HNZ. 2020-09-02T02:01:20.99 0.1 undecidable manual P 318 28.8489 120 -0.85 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MEU.EHN. ML:2.0 0.000622 0.36 AML other m 2020-09-02T02:01:25.42
IV.MEU.EHE. ML:1.7 0.000311 0.18 AML other m 2020-09-02T02:01:25.91
IV.SSY.HHE. ML:2.4 0.001346117 0.24 AML other m 2020-09-02T02:01:26.76
IV.HPAC.HHE. ML:2.4 0.0009989999999999999 0.28 AML other m 2020-09-02T02:01:28.25
IV.CROCE.HNE. ML:2.1 0.00041749999999999996 0.12 AML other m 2020-09-02T02:01:28.69
IV.CROCE.HHE. ML:2.1 0.000348 0.1 AML other m 2020-09-02T02:01:28.64
IV.CROCE.HNN. ML:2.2 0.000491 0.5 AML other m 2020-09-02T02:01:28.51
IV.HPAC.HHN. ML:2.3 0.0007585 0.96 AML other m 2020-09-02T02:01:28.28
IV.CROCE.HHN. ML:2.1 0.00041200000000000004 0.5 AML other m 2020-09-02T02:01:28.52
IV.HLNI.HHE. ML:2.3 0.000592 0.22 AML other m 2020-09-02T02:01:28.77
IV.HLNI.HHN. ML:2.1 0.0003575 1.18 AML other m 2020-09-02T02:01:28.80
IV.HAGA.HHN. ML:1.9 0.000224 0.44 AML other m 2020-09-02T02:01:29.07
IV.HAGA.HHE. ML:1.9 0.0002265 1.66 AML other m 2020-09-02T02:01:29.13
IV.AGST.EHN. ML:2.1 0.00040079065000000005 1.3792 AML other m 2020-09-02T02:01:31.78
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
Waveforms Seismic signals in miniseed + resp format Download