Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 31-12-2013 and time 18:53:45 (Italy) in region 8 km SE Viggianello (PZ)

A magnitude ML 1.3 earthquake occured in region: 8 km SE Viggianello (PZ), on

  • 31-12-2013 17:53:45 (UTC)
  • 31-12-2013 18:53:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.9300, 16.1580 at 2 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
Viggianello PZ 8 3025 3025
Morano Calabro CS 10 4576 7601
San Severino Lucano PZ 10 1563 9164
Rotonda PZ 11 3494 12658
Terranova di Pollino PZ 13 1208 13866
San Basile CS 13 1055 14921
Frascineto CS 14 2154 17075
Castrovillari CS 14 22240 39315
Mormanno CS 15 3027 42342
San Lorenzo Bellizzi CS 15 644 42986
Laino Castello CS 16 848 43834
Laino Borgo CS 16 1921 45755
Episcopia PZ 17 1434 47189
Saracena CS 17 3828 51017
San Costantino Albanese PZ 17 729 51746
Francavilla in Sinni PZ 17 4215 55961
Civita CS 17 902 56863
Castelluccio Superiore PZ 18 824 57687
Castelluccio Inferiore PZ 18 2131 59818
Alessandria del Carretto CS 19 462 60280
San Paolo Albanese PZ 19 294 60574

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km N of Cosenza (67546 inhabitants)
84 Km SE of Potenza (67122 inhabitants)
90 Km SW of Matera (60436 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 1.3 2013-12-31
17:53:45		 39.9303 16.1585 2 2015-01-20
11:30:49		 Bollettino Sismico Italiano INGV 6359651
Reviewed
Rev100 		ML 1.4 2013-12-31
17:53:45		 39.9213 16.1697 9 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 5130331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-12-31 17:53:45 ± 0.09
Latitude 39.9303 ± 0.0045
Longitude 16.1585 ± 0.0059
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 6359651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 29
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.13490
Epicentral distance of station farthest from the epicenter (degree) 0.59175
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 6359651
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:08:22

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 5130331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-12-31 18:04:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2013-12-31T17:53:59.04 0.3 undecidable manual S 319 37.3293 92 0.13 71
IV.CELI.HHE. 2013-12-31T17:53:59.39 0.6 undecidable manual P 153 65.6898 50 0.67 39
IV.SCHR.EHZ. 2013-12-31T17:53:56.87 0.3 undecidable manual S 347 30.6471 93 0.27 70
IV.CET2.HHE. 2013-12-31T17:53:55.23 0.1 undecidable manual P 201 47.8188 92 -0.31 90
IV.SIRI.HHZ. 2013-12-31T17:53:53.04 0.3 undecidable manual P 319 37.3293 92 -0.4 67
IV.SALB.HHZ. 2013-12-31T17:53:51.95 0.1 undecidable manual S 110 16.9719 95 0.07 100
IV.MMN.HHZ. 2013-12-31T17:53:51.36 0.1 undecidable manual S 253 14.9739 96 0.19 98
IV.SCHR.EHZ. 2013-12-31T17:53:51.92 0.1 undecidable manual P 347 30.6471 93 -0.18 95
MN.CUC.HHZ. 2013-12-31T17:53:51.62 0.6 undecidable manual P 284 30.0477 93 -0.35 46
IV.SALB.HHZ. 2013-12-31T17:53:49.33 0.1 undecidable manual P 110 16.9719 95 -0.05 100
IV.T0721.EHZ. 2013-12-31T17:53:49.26 0.3 undecidable manual P 273 15.4734 96 0.19 73
IV.MMN.HHZ. 2013-12-31T17:53:48.99 0.3 undecidable manual P 253 14.9739 96 0.02 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CUC.HHN. ML:1.0 0.0000577 1.26 AML other m 2013-12-31T17:53:59.06
MN.CUC.HHE. ML:1.2 0.00008335 1.14 AML other m 2013-12-31T17:53:59.78
IV.MMN.HHE. ML:1.2 0.0002 0.14 AML other m 2013-12-31T17:53:51.50
IV.MMN.HHN. ML:1.6 0.000448 0.22 AML other m 2013-12-31T17:53:52.14
IV.SALB.HNN. ML:1.3 0.00020150000000000002 0.56 AML other m 2013-12-31T17:53:52.27
IV.SALB.HHN. ML:1.3 0.0002165 0.56 AML other m 2013-12-31T17:53:52.27
IV.SALB.HHE. ML:1.4 0.000249 0.5 AML other m 2013-12-31T17:53:52.25
IV.SALB.HNE. ML:1.4 0.0002585 0.52 AML other m 2013-12-31T17:53:52.25
IV.SIRI.HHN. ML:1.3 0.0000816 0.5 AML other m 2013-12-31T17:54:02.59
IV.SIRI.HHE. ML:1.3 0.00008345 0.3 AML other m 2013-12-31T17:54:03.83
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