Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-02-2015 and time 04:01:06 (Italy) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 1.5 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 23-02-2015 03:01:06 (UTC)
  • 23-02-2015 04:01:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.4360, 15.8140 at 11 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
Gioia Tauro RC 7 19864 19864
Palmi RC 9 18930 38794
San Ferdinando RC 11 4490 43284
Seminara RC 12 2811 46095
Rizziconi RC 13 7829 53924
Melicuccà RC 16 930 54854
Rosarno RC 16 14841 69695
Nicotera VV 16 6290 75985
Bagnara Calabra RC 17 10255 86240
Joppolo VV 18 1926 88166
San Procopio RC 18 534 88700
Limbadi VV 19 3695 92395
Sant'Eufemia d'Aspromonte RC 20 4120 96515
Taurianova RC 20 15636 112151
Sinopoli RC 20 2089 114240
Varapodio RC 20 2160 116400

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Messina (238439 inhabitants)
39 Km NE of Reggio di Calabria (183035 inhabitants)
74 Km SW of Lamezia Terme (70714 inhabitants)
86 Km SW of Catanzaro (90612 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 1.5 2015-02-23
03:01:06		 38.436 15.8135 11 2015-10-19
09:27:21		 Bollettino Sismico Italiano INGV 20249931
Reviewed
Rev100 		ML 1.5 2015-02-23
03:01:06		 38.4342 15.8138 10 2015-02-23
03:09:48		 Sala Sismica INGV-Roma 17198301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-02-23 03:01:06 ± 0.04
Latitude 38.4360 ± 0.0018
Longitude 15.8135 ± 0.0034
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 20249931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.17986
Epicentral distance of station farthest from the epicenter (degree) 0.65561
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 20249931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-07-11 08:32:39

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 17198301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-02-23 03:09:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2015-02-23T03:01:23.11 0.3 undecidable manual S 231 51.4152 50 -0.07 71
IV.MILZ.HHE. 2015-02-23T03:01:23.78 0.6 undecidable manual S 250 53.8017 50 -0.06 47
IV.IVPL.HHE. 2015-02-23T03:01:19.54 0.1 undecidable manual P 265 72.7716 50 -0.09 90
IV.MILZ.HHE. 2015-02-23T03:01:16.68 0.3 undecidable manual P 250 53.8017 50 -0.04 71
IV.MPNC.HHZ. 2015-02-23T03:01:16.51 0.1 undecidable manual P 231 51.4152 50 0.17 92
IV.MSCL.HHZ. 2015-02-23T03:01:15.53 0.3 undecidable manual S 185 22.755 50 0 75
MN.CEL.HHZ. 2015-02-23T03:01:14.79 0.3 undecidable manual S 160 20.6682 50 -0.2 73
IV.JOPP.HHZ. 2015-02-23T03:01:14.71 0.3 undecidable manual S 18 19.9689 50 -0.08 75
IV.MSCL.HHZ. 2015-02-23T03:01:12.04 0.1 undecidable manual P 185 22.755 50 0.12 98
IV.JOPP.HHZ. 2015-02-23T03:01:11.55 0.1 undecidable manual P 18 19.9689 50 0.05 100
MN.CEL.HHZ. 2015-02-23T03:01:11.67 0.1 undecidable manual P 160 20.6682 50 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:1.5 0.00023999999999999998 0.2 AML other m 2015-02-23T03:01:15.02
MN.CEL.HNN. ML:1.4 0.0001885 0.18 AML other m 2015-02-23T03:01:15.03
MN.CEL.HNE. ML:1.2 0.0001212 0.14 AML other m 2015-02-23T03:01:15.01
MN.CEL.HHE. ML:1.4 0.0001615 0.62 AML other m 2015-02-23T03:01:15.39
IV.MSCL.HHN. ML:2.0 0.0006319999999999999 0.68 AML other m 2015-02-23T03:01:16.02
IV.MSCL.HHE. ML:1.8 0.0004255 1 AML other m 2015-02-23T03:01:16.52
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