Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 04-09-2015 and time 23:20:43 (Italy) in region Mar Ionio Settentrionale (MARE)

A magnitude ML 1.9 earthquake occured in region: Mar Ionio Settentrionale (MARE), on

  • 04-09-2015 21:20:43 (UTC)
  • 04-09-2015 23:20:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9670, 16.6080 at 40 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
86 Km E of Reggio di Calabria (183035 inhabitants)
96 Km E of Messina (238439 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 1.9 2015-09-04
21:20:43		 37.9673 16.6083 40 2016-02-19
13:21:47		 Bollettino Sismico Italiano INGV 23034601
Reviewed
Rev100 		ML 1.8 2015-09-04
21:20:43		 37.9673 16.6083 40 2015-09-04
21:33:58		 Sala Sismica INGV-Roma 21228651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-09-04 21:20:43 ± 0.19
Latitude 37.9673 ± 0.0072
Longitude 16.6083 ± 0.0148
Depth (km) 40 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 23034601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1323
Semi-minor axis of confidence ellipse (meter) 436
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 118
Circular confidence region, given by single value of horizontal uncertainty (meter) 1320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 227
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 24
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) 1.64846
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 23034601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-01-11 11:07:24

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 21228651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-09-04 21:33:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NDIM.HNZ. 2015-09-04T21:22:41.45 3.0 positive manual Pn 1.41 0
IV.ARCI.HHZ. 2015-09-04T21:22:30.72 3.0 undecidable manual Pg 16.309999 0
IV.PTRJ.HHZ. 2015-09-04T21:22:26.99 3.0 undecidable manual Sn 1.34 0
IV.OVO.HHZ. 2015-09-04T21:22:25.99 3.0 undecidable manual Sg 10.9 0
IV.MRB1.HHZ. 2015-09-04T21:22:17.99 3.0 undecidable manual Sn 1.15 0
IV.RNI2.HHZ. 2015-09-04T21:22:01.75 3.0 undecidable manual Pg 16.110001 0
IV.SACR.HHZ. 2015-09-04T21:21:36.43 3.0 positive manual Pn -2.85 0
AC.VLO.HHZ. 2015-09-04T21:21:29.47 3.0 undecidable manual Pn -1.78 0
IV.MEU.SHZ. 2015-09-04T21:21:29.83 0.1 undecidable manual S 239 182.9835 91 -0.63 56
IV.HAVL.HHZ. 2015-09-04T21:21:27.80 0.3 undecidable manual S 230 172.0944 91 -0.32 50
IV.AMUR.HHZ. 2015-09-04T21:21:27.54 3.0 positive manual Pn -0.03 0
IV.HLNI.HHZ. 2015-09-04T21:21:26.84 0.1 undecidable manual S 246 167.2104 91 -0.22 70
IV.SSY.HHZ. 2015-09-04T21:21:25.51 0.1 undecidable manual S 237 162.1155 91 -0.45 67
IV.NOCI.HHZ. 2015-09-04T21:21:25.84 3.0 undecidable manual Pn -0.09 0
IV.MIGL.HHZ. 2015-09-04T21:21:24.26 3.0 negative manual Pn 0.67 0
IV.MSRU.HHZ. 2015-09-04T21:21:13.08 0.3 undecidable manual S 289 101.5206 92 0.18 67
IV.JOPP.HHE. 2015-09-04T21:21:11.31 0.1 undecidable manual S 319 94.8384 92 -0.15 89
IV.MEU.SHZ. 2015-09-04T21:21:10.85 0.1 undecidable manual P 239 182.9835 91 0.12 69
IV.HAVL.HHZ. 2015-09-04T21:21:09.53 0.1 undecidable manual P 230 172.0944 91 0.16 72
IV.MTTG.HHZ. 2015-09-04T21:21:08.42 0.3 undecidable manual S 273 79.5648 93 0.25 70
IV.SSY.HHZ. 2015-09-04T21:21:08.48 0.1 undecidable manual P 237 162.1155 91 0.35 73
IV.HLNI.HHZ. 2015-09-04T21:21:08.49 0.1 undecidable manual P 246 167.2104 91 -0.27 70
MN.CEL.HHE. 2015-09-04T21:21:06.09 0.3 undecidable manual S 298 70.2741 94 -0.09 70
IV.HAGA.HHZ. 2015-09-04T21:21:06.24 0.1 undecidable manual P 240 148.4403 91 -0.19 78
IV.SERS.HHE. 2015-09-04T21:21:02.64 0.1 undecidable manual P 3 118.7922 92 -0.09 88
IV.PLAC.HHZ. 2015-09-04T21:21:02.86 0.1 undecidable manual S 345 55.5 100 -0.16 98
IV.MPAZ.HHZ. 2015-09-04T21:21:02.56 0.1 undecidable manual S 268 52.6029 102 0.15 99
IV.MSRU.HHZ. 2015-09-04T21:21:00.72 0.1 undecidable manual P 289 101.5206 92 0.13 89
IV.JOPP.HHE. 2015-09-04T21:20:59.24 0.3 undecidable manual P 319 94.8384 92 -0.52 62
IV.MTTG.HHZ. 2015-09-04T21:20:58.46 0.1 undecidable manual P 273 79.5648 93 0.6 84
IV.GMB.BHZ. 2015-09-04T21:20:57.05 0.1 undecidable manual P 288 71.5728 94 0.17 94
MN.CEL.HHE. 2015-09-04T21:20:56.85 0.3 undecidable manual P 298 70.2741 94 0.14 71
IV.MPAZ.HHZ. 2015-09-04T21:20:55.06 0.1 undecidable manual P 268 52.6029 102 0.53 90
IV.PLAC.HHZ. 2015-09-04T21:20:54.38 0.1 undecidable manual P 345 55.5 100 -0.5 91
IV.SOI.EHZ. 2015-09-04T21:20:54.24 0.1 undecidable manual P 284 49.8168 104 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GMB.BHN. ML:2.2 0.00021300000000000003 0.36 AML other m 2015-09-04T21:21:07.34
IV.GMB.BHE. ML:2.1 0.00016249999999999997 1.32 AML other m 2015-09-04T21:21:09.04
IV.HAGA.HHE. ML:1.8 0.0000292 1.02 AML other m 2015-09-04T21:21:14.38
IV.HAGA.HHN. ML:1.8 0.000029400000000000003 1.04 AML other m 2015-09-04T21:21:26.62
IV.HLNI.HHE. ML:2.0 0.0000393 0.74 AML other m 2015-09-04T21:21:27.49
IV.HLNI.HHN. ML:1.9 0.0000346 1 AML other m 2015-09-04T21:21:28.55
IV.MPAZ.HHN. ML:1.7 0.00009895 0.78 AML other m 2015-09-04T21:21:03.31
IV.MPAZ.HHE. ML:1.6 0.0000789 0.44 AML other m 2015-09-04T21:21:03.93
IV.MTTG.HHN. ML:1.7 0.00006645 0.72 AML other m 2015-09-04T21:21:14.66
IV.MTTG.HHE. ML:1.7 0.00005375 1.54 AML other m 2015-09-04T21:21:11.01
IV.PLAC.HHE. ML:1.6 0.00007719999999999999 0.46 AML other m 2015-09-04T21:21:03.02
IV.PLAC.HHN. ML:1.8 0.00010499999999999999 0.5 AML other m 2015-09-04T21:21:03.31
AC.VLO.HHN. ML:4.6 0.003105 0.06 AML other m 2015-09-04T21:22:57.28
AC.VLO.HHE. ML:4.4 0.001695 0.06 AML other m 2015-09-04T21:22:57.37
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