INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 11-10-2018 and time 20:11:37 (Italy) in region 7 km W Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 7 km W Accumoli (RI), on

  • 11-10-2018 18:11:37 (UTC)
  • 11-10-2018 20:11:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.71, 13.16 at 10 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
Accumoli RI 7 667 667
Cittareale RI 10 482 1149
Norcia PG 11 4957 6106
Cascia PG 12 3217 9323
Arquata del Tronto AP 13 1178 10501
Amatrice RI 13 2657 13158
Monteleone di Spoleto PG 18 599 13757
Poggiodomo PG 19 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NW of L'Aquila (69753 inhabitants)
45 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
90 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 inhabitants)
93 Km E of Viterbo (67173 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 1.2 2018-10-11
18:11:37
42.71 13.17 10 2018-10-11
18:20:28
Sala Sismica INGV-Roma 61848571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-11 18:11:37 ± 0.07
Latitude 42.71 ± 0.00
Longitude 13.17 ± 0.00
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61848571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35433
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 61848571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-11 18:20:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2018-10-11T18:13:35.44 3.0 undecidable manual Sg 13.59 0
IV.CRND.HNZ. 2018-10-11T18:13:10.33 3.0 undecidable manual Sn 3.11 0
RF.GEPF.HHZ. 2018-10-11T18:13:09.66 3.0 undecidable manual Sn -5.64 0
IV.NDIM.HHZ. 2018-10-11T18:13:03.81 3.0 undecidable manual Sg 8.98 0
IV.CAR1.HHZ. 2018-10-11T18:12:50.07 3.0 negative manual Pg 9.53 0
OX.CIMO.HHZ. 2018-10-11T18:12:41.56 3.0 positive manual Pg 8.1 0
IV.BRSN.HNZ. 2018-10-11T18:12:34.82 3.0 undecidable manual Sg 3.57 0
IV.VIVA.HHZ. 2018-10-11T18:12:11.86 3.0 undecidable manual S -0.68 0
IV.LMD.HHZ. 2018-10-11T18:12:10.13 3.0 undecidable manual Pg 2.83 0
IV.CSFT.HHZ. 2018-10-11T18:12:09.10 3.0 negative manual Pn -2.1 0
IV.ARVD.HHZ. 2018-10-11T18:12:04.81 3.0 undecidable manual S -1.2 0
IV.GIUL.HHZ. 2018-10-11T18:12:00.06 3.0 negative manual P 0.7 0
IV.MURB.HHZ. 2018-10-11T18:11:51.34 3.0 positive manual P -0.71 0
IV.MC2.EHZ. 2018-10-11T18:11:46.30 0.3 undecidable manual S 5 0.205 113 0.21 72
IV.MMO1.EHZ. 2018-10-11T18:11:46.60 0.3 undecidable manual S 32 0.2257 111 -0.23 72
IV.RM33.EHZ. 2018-10-11T18:11:45.70 0.1 undecidable manual S 170 0.2014 114 -0.26 95
IV.GAVE.EHZ. 2018-10-11T18:11:45.70 0.3 undecidable manual S 266 0.1996 114 -0.2 73
IV.MF5.EHZ. 2018-10-11T18:11:45.59 0.3 undecidable manual P 37 0.3543 50 0.43 67
IV.ARRO.EHZ. 2018-10-11T18:11:44.28 0.1 undecidable manual P 247 0.3202 50 -0.3 93
IV.SMA1.EHZ. 2018-10-11T18:11:44.10 0.3 undecidable manual S 121 0.1466 121 0.01 76
IV.FDMO.HHZ. 2018-10-11T18:11:44.85 0.1 undecidable manual P 350 0.3345 50 0.04 97
IV.MTRA.EHZ. 2018-10-11T18:11:44.70 0.1 undecidable manual S 74 0.1772 116 -0.42 93
IV.TERO.HHZ. 2018-10-11T18:11:44.43 3.0 undecidable manual Pg -0.39 0
IV.LNSS.HHZ. 2018-10-11T18:11:44.00 0.1 undecidable manual S 221 0.1385 122 0.17 98
IV.T1299.EHZ. 2018-10-11T18:11:43.30 0.3 undecidable manual S 130 0.1124 128 0.29 72
IV.NRCA.HHZ. 2018-10-11T18:11:43.50 0.3 undecidable manual S 344 0.1322 124 -0.1 75
IV.RM33.EHZ. 2018-10-11T18:11:42.23 0.1 undecidable manual P 170 0.2014 114 -0.16 98
IV.GAVE.EHZ. 2018-10-11T18:11:42.26 0.1 undecidable manual P 266 0.1996 114 -0.09 99
IV.MC2.EHZ. 2018-10-11T18:11:42.72 0.3 undecidable manual P 5 0.205 113 0.25 72
IV.MMO1.EHZ. 2018-10-11T18:11:42.76 0.1 undecidable manual P 32 0.2257 111 -0.13 98
IV.NRCA.HHZ. 2018-10-11T18:11:41.13 0.1 undecidable manual P 344 0.1322 124 0.1 100
IV.LNSS.HHZ. 2018-10-11T18:11:41.32 0.1 undecidable manual P 221 0.1385 122 0.16 99
IV.SMA1.EHZ. 2018-10-11T18:11:41.48 0.1 undecidable manual P 121 0.1466 121 0.17 98
IV.MTRA.EHZ. 2018-10-11T18:11:41.81 0.1 undecidable manual P 74 0.1772 116 -0.09 99
IV.T1299.EHZ. 2018-10-11T18:11:40.97 0.1 undecidable manual P 130 0.1124 128 0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.2 9.45E-5 0.22 AML other m 2018-10-11T18:11:47.26
IV.NRCA.HHN. ML:1.2 0.000157 0.14 AML other m 2018-10-11T18:11:43.83
IV.LNSS.HHN. ML:1.4 0.000223 0.14 AML other m 2018-10-11T18:11:44.16
IV.LNSS.HHE. ML:1.4 0.0002405 0.16 AML other m 2018-10-11T18:11:44.16
IV.SMA1.EHE. ML:1.3 0.000193 0.2 AML other m 2018-10-11T18:11:44.77
IV.SMA1.EHN. ML:1 9.43E-5 0.14 AML other m 2018-10-11T18:11:44.84
IV.NRCA.HHE. ML:1.4 0.0002355 0.18 AML other m 2018-10-11T18:11:43.83
IV.NRCA.HNE. ML:1.4 0.00022916985 0.192 AML other m 2018-10-11T18:11:43.74
IV.MTRA.EHE. ML:1.2 0.00011313985 0.3456 AML other m 2018-10-11T18:11:44.97
IV.MTRA.EHN. ML:1 7.5976235E-5 0.1664 AML other m 2018-10-11T18:11:45.61
IV.RM33.EHN. ML:0.7 3.282482E-5 0.1408 AML other m 2018-10-11T18:11:45.89
IV.RM33.EHE. ML:0.9 4.874268E-5 0.1792 AML other m 2018-10-11T18:11:47.19
IV.GAVE.EHN. ML:0.9 5.5157515E-5 0.1152 AML other m 2018-10-11T18:11:46.78
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