Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 22-08-2015 and time 14:42:53 (UTC) in region 9 km SE Randazzo (CT)

A magnitude ML 2.0 earthquake occured in region: 9 km SE Randazzo (CT), on

  • 22-08-2015 14:42:53 (UTC)
  • 22-08-2015 16:42:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8120, 15.0050 at 25 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
Randazzo CT 9 10900 10900
Moio Alcantara ME 11 717 11617
Santa Domenica Vittoria ME 12 980 12597
Maletto CT 12 3920 16517
Linguaglossa CT 13 5403 21920
Malvagna ME 13 733 22653
Castiglione di Sicilia CT 13 3215 25868
Roccella Valdemone ME 14 666 26534
Milo CT 14 1087 27621
Sant'Alfio CT 14 1582 29203
Bronte CT 15 19172 48375
Piedimonte Etneo CT 15 3963 52338
Francavilla di Sicilia ME 15 3945 56283
Zafferana Etnea CT 16 9517 65800
Motta Camastra ME 18 845 66645
Mascali CT 18 14282 80927
Fiumefreddo di Sicilia CT 18 9623 90550
Santa Venerina CT 18 8592 99142
Maniace CT 18 3765 102907
Giarre CT 18 27659 130566
Riposto CT 20 14838 145404
Calatabiano CT 20 5308 150712
Gaggi ME 20 3184 153896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
35 Km N of Catania (314555 inhabitants)
64 Km SW of Messina (238439 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
87 Km N of Siracusa (122291 inhabitants)
90 Km E 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 2.0 2015-08-22
14:42:53		 37.8118 15.0048 25 2016-01-08
08:46:44		 Bollettino Sismico Italiano INGV 22466731
Reviewed
Rev100 		ML 2.0 2015-08-22
14:42:53		 37.8193 14.9972 28 2015-08-22
14:48:42		 Sala Sismica INGV-Roma 21020611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-22 14:42:53 ± 0.12
Latitude 37.8118 ± 0.0036
Longitude 15.0048 ± 0.0091
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 22466731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 631
Semi-minor axis of confidence ellipse (meter) 466
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.85705
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 21020611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-22 14:48:41

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 22466731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-11-28 17:09:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.USI.HHZ. 2015-08-22T14:43:47.99 3.0 undecidable manual Sg 4.96 0
IV.HAVL.HHZ. 2015-08-22T14:43:22.25 0.1 undecidable manual S 174 95.1381 100 0.55 76
IV.RAFF.HHZ. 2015-08-22T14:43:19.60 0.1 undecidable manual S 221 86.4468 101 0.18 86
IV.MEU.SHZ. 2015-08-22T14:43:17.54 0.1 undecidable manual S 191 79.2651 102 -0.01 90
IV.MSRU.HHZ. 2015-08-22T14:43:14.26 0.1 undecidable manual S 41 66.6777 105 -0.03 93
IV.AGST.EHZ. 2015-08-22T14:43:13.83 0.1 undecidable manual S 162 64.5909 105 0.08 90
IV.HLNI.HHZ. 2015-08-22T14:43:10.63 0.1 undecidable manual S 193 52.7028 109 -0.08 94
IV.MPAZ.HHZ. 2015-08-22T14:43:09.46 0.1 undecidable manual P 80 89.1441 100 0.57 76
IV.MPNC.HHZ. 2015-08-22T14:43:09.73 0.1 undecidable manual S 39 48.0186 111 0.2 92
IV.HAVL.HHZ. 2015-08-22T14:43:09.46 0.1 positive manual P 174 95.1381 100 -0.34 83
IV.RAFF.HHZ. 2015-08-22T14:43:08.80 0.1 positive manual P 221 86.4468 101 0.31 83
IV.MSFR.HHZ. 2015-08-22T14:43:08.47 0.1 undecidable manual S 304 43.7229 113 -0.01 95
IV.MEU.SHZ. 2015-08-22T14:43:06.90 0.1 positive manual P 191 79.2651 102 -0.5 82
IV.MCSR.HHZ. 2015-08-22T14:43:06.18 0.1 undecidable manual S 35 34.2435 120 -0.03 98
IV.SSY.HHZ. 2015-08-22T14:43:06.35 0.1 positive manual P 175 72.7716 103 -0.08 91
IV.MNO.SHZ. 2015-08-22T14:43:05.46 0.1 undecidable manual S 296 30.1476 124 0.18 97
IV.MSRU.HHZ. 2015-08-22T14:43:05.81 0.1 undecidable manual P 41 66.6777 105 0.29 87
IV.IVPL.HHZ. 2015-08-22T14:43:05.22 0.1 positive manual P 358 62.6928 106 0.3 88
IV.MUCR.HHZ. 2015-08-22T14:43:04.52 0.1 undecidable manual S 336 28.0497 126 -0.31 92
IV.AGST.EHZ. 2015-08-22T14:43:04.91 0.1 negative manual P 162 64.5909 105 -0.3 89
IV.NOV.HHZ. 2015-08-22T14:43:04.47 0.1 undecidable manual S 26 26.5512 128 -0.04 99
IV.HAGA.HHZ. 2015-08-22T14:43:04.34 0.1 positive manual P 167 59.8956 106 -0.17 92
IV.HLNI.HHZ. 2015-08-22T14:43:03.02 0.1 negative manual P 193 52.7028 109 -0.43 88
IV.EPZF.HHZ. 2015-08-22T14:43:02.30 0.1 undecidable manual S 276 12.9759 149 0.22 99
IV.GALF.HHZ. 2015-08-22T14:43:02.29 0.1 negative manual P 254 40.0266 116 0.64 83
IV.MPNC.HHZ. 2015-08-22T14:43:02.87 0.1 positive manual P 39 48.0186 111 0.1 93
IV.MSFR.HHZ. 2015-08-22T14:43:01.98 0.1 undecidable manual P 304 43.7229 113 -0.18 93
IV.EMSG.HHZ. 2015-08-22T14:43:01.93 0.1 undecidable manual S 282 4.8951 168 0.64 90
IV.MNO.SHZ. 2015-08-22T14:43:00.25 0.1 positive manual P 296 30.1476 124 -0.07 97
IV.MCSR.HHZ. 2015-08-22T14:43:00.75 0.1 negative manual P 35 34.2435 120 -0.11 97
IV.EPOZ.HHZ. 2015-08-22T14:43:00.05 3.0 undecidable manual P 0.5 0
IV.MUCR.HHZ. 2015-08-22T14:42:59.55 0.1 negative manual P 336 28.0497 126 -0.51 89
IV.NOV.HHZ. 2015-08-22T14:42:59.67 0.1 negative manual P 26 26.5512 128 -0.2 96
IV.ESML.HHE. 2015-08-22T14:42:59.60 0.1 undecidable manual P 207 24.1536 131 0.02 99
IV.EPZF.HHZ. 2015-08-22T14:42:58.14 0.1 positive manual P 276 12.9759 149 -0.33 95
IV.ESLN.HHZ. 2015-08-22T14:42:58.40 0.1 undecidable manual P 191 13.3755 149 -0.11 100
IV.EMSG.HHZ. 2015-08-22T14:42:57.78 0.1 positive manual P 282 4.8951 168 -0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:2.6 0.002615 0.24 AML other m 2015-08-22T14:43:02.03
IV.EMSG.HHE. ML:2.4 0.001565 0.18 AML other m 2015-08-22T14:43:01.98
IV.EPOZ.HHE. ML:1.9 0.00038349999999999994 1.58 AML other m 2015-08-22T14:43:07.06
IV.EPOZ.HHN. ML:2.2 0.0006815 0.84 AML other m 2015-08-22T14:43:08.49
IV.EPZF.HHE. ML:2.0 0.0006325 0.42 AML other m 2015-08-22T14:43:02.59
IV.EPZF.HHN. ML:2.2 0.0009675 1.1 AML other m 2015-08-22T14:43:03.06
IV.HAGA.HHN. ML:1.8 0.0001325 0.68 AML other m 2015-08-22T14:43:13.72
IV.HAGA.HHE. ML:1.9 0.000153 1.26 AML other m 2015-08-22T14:43:15.85
IV.HAVL.HHE. ML:2.0 0.00011599999999999999 1.36 AML other m 2015-08-22T14:43:24.11
IV.HAVL.HHN. ML:2.1 0.0001245 0.72 AML other m 2015-08-22T14:43:32.13
IV.HLNI.HHN. ML:1.7 0.00010400000000000001 0.24 AML other m 2015-08-22T14:43:12.78
IV.HLNI.HHE. ML:1.7 0.00011499999999999999 0.14 AML other m 2015-08-22T14:43:13.26
IV.MCSR.HHE. ML:2.5 0.0011400000000000002 0.32 AML other m 2015-08-22T14:43:07.14
IV.MCSR.HHN. ML:2.5 0.00117 0.3 AML other m 2015-08-22T14:43:06.96
IV.MEU.SHN. ML:0.0 0.000241 1.32 AML other m 2015-08-22T14:43:18.84
IV.MEU.SHE. ML:0.0 0.000184 1.16 AML other m 2015-08-22T14:43:21.06
IV.MNO.SHE. ML:0.0 0.000356 0.28 AML other m 2015-08-22T14:43:06.47
IV.MNO.SHN. ML:0.0 0.0002688 0.56 AML other m 2015-08-22T14:43:09.71
IV.MPNC.HHN. ML:2.2 0.000411 0.44 AML other m 2015-08-22T14:43:10.71
IV.MPNC.HHE. ML:2.2 0.0003735 0.52 AML other m 2015-08-22T14:43:11.20
IV.MSFR.HHN. ML:1.4 0.00005945 1.26 AML other m 2015-08-22T14:43:10.31
IV.MSFR.HHE. ML:1.3 0.00005555 0.9 AML other m 2015-08-22T14:43:09.38
IV.MSRU.HHE. ML:2.1 0.00019250000000000002 1.06 AML other m 2015-08-22T14:43:17.91
IV.MSRU.HHN. ML:1.8 0.000111 0.22 AML other m 2015-08-22T14:43:17.45
IV.MUCR.HHE. ML:1.6 0.000141 1.02 AML other m 2015-08-22T14:43:05.11
IV.MUCR.HHN. ML:1.7 0.000194 0.4 AML other m 2015-08-22T14:43:05.48
IV.NOV.HHE. ML:2.0 0.000456 0.36 AML other m 2015-08-22T14:43:04.62
IV.NOV.HHN. ML:1.8 0.00027 0.52 AML other m 2015-08-22T14:43:06.80
IV.RAFF.HHE. ML:1.9 0.0000894 0.26 AML other m 2015-08-22T14:43:22.07
IV.RAFF.HHN. ML:2.0 0.00011449999999999999 1.42 AML other m 2015-08-22T14:43:22.30
IV.SSY.HHN. ML:2.3 0.0003265 0.6 AML other m 2015-08-22T14:43:19.93
IV.SSY.HHE. ML:2.0 0.00014350000000000002 1.34 AML other m 2015-08-22T14:43:21.18
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