INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.8 on date 12-09-2018 and time 04:34:34 (Italy) in region 10 km SW Serravalle di Chienti (MC)

A magnitude ML 0.8 earthquake occured in region: 10 km SW Serravalle di Chienti (MC), on

  • 12-09-2018 02:34:34 (UTC)
  • 12-09-2018 04:34:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 12.88 at 8 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
Serravalle di Chienti MC 10 1070 1070
Monte Cavallo MC 10 145 1215
Valtopina PG 12 1398 2613
Sellano PG 13 1079 3692
Nocera Umbra PG 14 5839 9531
Pieve Torina MC 15 1458 10989
Foligno PG 15 57155 68144
Muccia MC 16 915 69059
Sefro MC 17 422 69481
Spello PG 17 8645 78126
Fiordimonte MC 18 202 78328
Trevi PG 18 8469 86797
Pievebovigliana MC 18 866 87663
Visso MC 19 1107 88770
Preci PG 19 724 89494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
41 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
94 Km S of Fano (60888 inhabitants)
96 Km SE of Arezzo (99543 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 0.8 2018-09-12
02:34:34
43.01 12.88 8 2018-09-12
03:59:17
Sala Sismica INGV-Roma 60844981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-12 02:34:34 ± 0.06
Latitude 43.01 ± 0.00
Longitude 12.88 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 60844981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 186
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 60844981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-12 03:59:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SAMA.HHZ. 2018-09-12T02:35:14.25 3.0 undecidable manual S -0.43 0
IV.PE3.EHZ. 2018-09-12T02:35:00.26 3.0 undecidable manual S -0.34 0
IV.MURB.HHZ. 2018-09-12T02:34:48.60 0.6 undecidable manual S 315 0.3651 50 0.29 46
IV.MMO1.EHZ. 2018-09-12T02:34:47.70 0.6 undecidable manual S 108 0.3444 50 0 49
OB.GAVE.EHZ. 2018-09-12T02:34:46.96 0.6 undecidable manual S 178 0.313 103 0.23 47
IV.ATCC.EHZ. 2018-09-12T02:34:44.57 0.6 undecidable manual S 316 0.25 106 0.17 48
IV.MURB.HHZ. 2018-09-12T02:34:42.27 0.6 negative manual P 315 0.3651 50 -0.14 47
IV.EL6.EHZ. 2018-09-12T02:34:42.49 3.0 negative manual P 0.67 0
IV.MMO1.EHZ. 2018-09-12T02:34:41.84 0.1 undecidable manual P 108 0.3444 50 -0.22 93
OB.GAVE.EHZ. 2018-09-12T02:34:41.56 0.1 undecidable manual P 178 0.313 103 0.06 97
IV.ASSB.HHZ. 2018-09-12T02:34:41.21 0.6 undecidable manual S 283 0.1655 114 -0.09 49
IV.FDMO.HHZ. 2018-09-12T02:34:41.15 0.6 undecidable manual S 78 0.1556 115 0.19 49
IV.ATCC.EHZ. 2018-09-12T02:34:40.06 0.6 undecidable manual P 316 0.25 106 -0.1 49
IV.CSP1.EHZ. 2018-09-12T02:34:40.38 3.0 negative manual P 0.6 0
IV.ASSB.HHZ. 2018-09-12T02:34:38.33 0.1 positive manual P 283 0.1655 114 -0.04 100
IV.FDMO.HHZ. 2018-09-12T02:34:38.41 0.6 positive manual P 78 0.1556 115 0.24 48
IV.CESI.HHZ. 2018-09-12T02:34:35.84 0.1 undecidable manual P 91 0.0189 165 -0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0 0.000301 0.24 AML other m 2018-09-12T02:34:36.70
IV.CESI.HHE. ML:0 0.000425 0.36 AML other m 2018-09-12T02:34:36.78
IV.FDMO.HHE. ML:0.5 2.945E-5 0.32 AML other m 2018-09-12T02:34:41.55
IV.FDMO.HHN. ML:0.7 4.3E-5 0.2 AML other m 2018-09-12T02:34:41.45
IV.ASSB.HHE. ML:1 7.42E-5 0.2 AML other m 2018-09-12T02:34:42.26
IV.ASSB.HHN. ML:0.9 6.735E-5 0.94 AML other m 2018-09-12T02:34:42.53
IV.SAMA.HHN. ML:2.9 0.000519 0.06 AML other m 2018-09-12T02:35:16.59
IV.SAMA.HHE. ML:2.9 0.0004525 0.06 AML other m 2018-09-12T02:35:16.56
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