ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.4 on date 12-12-2018 and time 07:14:39 (UTC) in region 4 km E Sellano (PG)

A magnitude ML 0.4 earthquake occured in region: 4 km E Sellano (PG), on

  • 12-12-2018 07:14:39 (UTC)
  • 12-12-2018 08:14:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.88, 12.97 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 4 1079 1079
Preci PG 5 724 1803
Cerreto di Spoleto PG 8 1075 2878
Visso MC 11 1107 3985
Monte Cavallo MC 13 145 4130
Norcia PG 14 4957 9087
Castelsantangelo sul Nera MC 15 281 9368
Ussita MC 15 444 9812
Vallo di Nera PG 16 364 10176
Campello sul Clitunno PG 18 2442 12618
Trevi PG 18 8469 21087
Cascia PG 19 3217 24304
Pieve Torina MC 19 1458 25762
Poggiodomo PG 19 117 25879
Fiordimonte MC 20 202 26081

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
100 Km N of Guidonia Montecelio (88673 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.4 2018-12-12
07:14:39
42.88 12.97 5 2018-12-12
07:23:06
Sala Sismica INGV-Roma 63856041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-12 07:14:39 ± 0.22
Latitude 42.88 ± 0.00
Longitude 12.97 ± 0.01
Depth (km) 5 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 63856041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 186
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.19965
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 63856041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-12 07:23:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAGR.HHZ. 2018-12-12T07:16:03.95 3.0 positive manual Pg 23.66 0
IV.EUCT.HNZ. 2018-12-12T07:16:01.35 3.0 undecidable manual Sg 4.72 0
IV.IFIL.HHZ. 2018-12-12T07:15:53.97 3.0 undecidable manual Pg 25.66 0
IV.GALF.HHZ. 2018-12-12T07:15:48.13 3.0 undecidable manual Pn 8.86 0
OX.AGOR.HHZ. 2018-12-12T07:15:47.74 3.0 undecidable manual Sn -1.58 0
IV.ORI.HHZ. 2018-12-12T07:15:40.55 3.0 negative manual Pg 21.57 0
IV.RNI2.HHZ. 2018-12-12T07:15:34.49 3.0 undecidable manual Sg 16.77 0
IV.NDIM.HNZ. 2018-12-12T07:15:31.59 3.0 undecidable manual Sg -0.02 0
IV.MILN.HNZ. 2018-12-12T07:15:22.91 3.0 undecidable manual Pg 8.53 0
IV.EUCT.HNZ. 2018-12-12T07:15:19.64 3.0 undecidable manual Pg 6.67 0
IV.PE3.EHZ. 2018-12-12T07:15:04.08 3.0 undecidable manual Sg -0.31 0
IV.MMO1.EHZ. 2018-12-12T07:14:48.62 3.0 undecidable manual S 0
IV.GAVE.EHZ. 2018-12-12T07:14:47.16 0.3 undecidable manual S 197 0.1996 103 -0.07 73
IV.BRSN.HNZ. 2018-12-12T07:14:47.05 3.0 positive manual P -1.45 0
IV.LNSS.HHZ. 2018-12-12T07:14:47.94 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2018-12-12T07:14:46.17 0.3 undecidable manual S 28 0.1736 105 -0.08 73
IV.MMO1.EHZ. 2018-12-12T07:14:46.37 3.0 undecidable manual P 0
IV.TOLF.HHZ. 2018-12-12T07:14:45.10 3.0 positive manual Pn -3.16 0
IV.MC2.EHE. 2018-12-12T07:14:45.58 0.3 undecidable manual S 80 0.1592 106 -0.14 73
IV.NRCA.HHE. 2018-12-12T07:14:44.16 0.1 undecidable manual S 116 0.1142 112 0.1 99
IV.CESI.HHZ. 2018-12-12T07:14:44.63 0.3 undecidable manual S 337 0.1313 109 -0.07 74
IV.MC2.EHE. 2018-12-12T07:14:43.43 0.6 undecidable manual P 80 0.1592 106 0.41 46
IV.FDMO.HHZ. 2018-12-12T07:14:43.11 0.3 undecidable manual P 28 0.1736 105 -0.21 71
IV.GAVE.EHZ. 2018-12-12T07:14:43.80 0.3 undecidable manual P 197 0.1996 103 -0.09 73
IV.NRCA.HHE. 2018-12-12T07:14:42.03 0.1 undecidable manual P 116 0.1142 112 -0.03 100
IV.CESI.HHZ. 2018-12-12T07:14:42.66 0.1 undecidable manual P 337 0.1313 109 0.23 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NDIM.HNE. ML:3.8 0.000953 0.1 AML other m 2018-12-12T07:15:52.77
IV.EUCT.HNE. ML:4.6 0.002255 0.08 AML other m 2018-12-12T07:15:36.14
IV.CESI.HHE. ML:0.3 2.3037925E-5 0.16 AML other m 2018-12-12T07:14:45.46
IV.CESI.HHN. ML:0.4 2.8246E-5 0.1216 AML other m 2018-12-12T07:14:45.43
IV.FDMO.HHE. ML:0.2 1.625792E-5 0.1792 AML other m 2018-12-12T07:14:46.25
IV.GAVE.EHE. ML:0.7 3.850534E-5 0.16 AML other m 2018-12-12T07:14:47.48
IV.GAVE.EHN. ML:0.4 2.2427676E-5 0.16 AML other m 2018-12-12T07:14:47.66
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download