ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.7 on date 17-03-2019 and time 08:29:34 (UTC) in region 9 km W Arquata del Tronto (AP)

A magnitude ML 0.7 earthquake occured in region: 9 km W Arquata del Tronto (AP), on

  • 17-03-2019 08:29:34 (UTC)
  • 17-03-2019 09:29:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.2 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
Norcia PG 9 4957 4957
Arquata del Tronto AP 9 1178 6135
Castelsantangelo sul Nera MC 10 281 6416
Montegallo AP 12 523 6939
Accumoli RI 13 667 7606
Montemonaco AP 15 604 8210
Preci PG 15 724 8934
Ussita MC 16 444 9378
Visso MC 16 1107 10485
Acquasanta Terme AP 18 2916 13401
Cascia PG 18 3217 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km S of Ancona (100861 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE of Tivoli (56533 inhabitants)
100 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 0.7 2019-03-17
08:29:34
42.81 13.2 10 2019-03-17
08:43:40
Sala Sismica INGV-Roma 66626261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-17 08:29:34 ± 0.05
Latitude 42.81 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66626261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 431
Semi-minor axis of confidence ellipse (meter) 219
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34984
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 66626261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-17 08:43:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2019-03-17T08:31:27.97 3.0 positive manual Pg 21.66 0
AC.PUK.HHZ. 2019-03-17T08:30:52.95 3.0 positive manual Pn 2.17 0
IV.CAGR.HHZ. 2019-03-17T08:30:51.15 3.0 positive manual Pn -1.67 0
MN.PDG.HHZ. 2019-03-17T08:30:50.00 3.0 undecidable manual Pn 6.36 0
GU.GORR.HHZ. 2019-03-17T08:30:39.18 3.0 undecidable manual Pg 11.97 0
IV.IMI.HHZ. 2019-03-17T08:30:34.26 3.0 negative manual Pn -1.79 0
CR.STON.BHZ. 2019-03-17T08:30:32.76 3.0 undecidable manual Pn 5.25 0
IV.MRLC.HHZ. 2019-03-17T08:30:23.08 3.0 undecidable manual Pg 5.41 0
IV.MGR.HHZ. 2019-03-17T08:30:20.41 3.0 undecidable manual Pn -4.4 0
IV.IMOL.HNZ. 2019-03-17T08:30:11.97 3.0 positive manual Pg 4.56 0
IV.PTQR.HHZ. 2019-03-17T08:29:58.29 3.0 undecidable manual S -3.76 0
IV.LIK.EHZ.01 2019-03-17T08:29:55.96 3.0 positive manual P -2.81 0
IV.RM33.HNZ. 2019-03-17T08:29:46.27 0.6 undecidable manual S 178 0.2995 50 0.21 47
IV.CSP1.EHZ. 2019-03-17T08:29:45.56 0.6 undecidable manual S 1 0.2833 50 0 49
IV.LNSS.HHZ. 2019-03-17T08:29:44.24 0.3 undecidable manual S 210 0.2365 50 0.04 73
IV.FDMO.HHZ. 2019-03-17T08:29:44.28 0.3 undecidable manual S 340 0.2419 50 -0.08 73
IV.SMA1.EHZ. 2019-03-17T08:29:42.70 0.3 undecidable manual S 151 0.2041 114 -0.35 69
IV.TERO.HHZ. 2019-03-17T08:29:42.02 0.6 undecidable manual P 122 0.3498 50 0 48
IV.MTRA.HNZ. 2019-03-17T08:29:41.22 0.6 undecidable manual S 110 0.1529 120 -0.08 49
IV.FDMO.HHZ. 2019-03-17T08:29:40.18 0.1 undecidable manual P 340 0.2419 50 0 98
IV.MMO1.EHZ. 2019-03-17T08:29:40.47 0.6 undecidable manual S 46 0.1295 125 -0.07 49
IV.CSP1.EHZ. 2019-03-17T08:29:40.90 0.1 undecidable manual P 1 0.2833 50 0.02 97
IV.LNSS.HHZ. 2019-03-17T08:29:40.13 0.1 undecidable manual P 210 0.2365 50 0.04 98
IV.RM33.HNZ. 2019-03-17T08:29:40.84 0.1 undecidable manual P 178 0.2995 50 -0.32 91
IV.T1299.HNZ. 2019-03-17T08:29:39.43 0.3 undecidable manual P 161 0.1844 116 0.4 69
IV.SMA1.EHZ. 2019-03-17T08:29:39.44 0.3 undecidable manual P 151 0.2041 114 0.01 74
IV.MMO1.EHZ. 2019-03-17T08:29:38.00 0.1 undecidable manual P 46 0.1295 125 0.02 100
IV.MTRA.HNZ. 2019-03-17T08:29:38.61 0.1 undecidable manual P 110 0.1529 120 0.19 96
IV.NRCA.HHZ. 2019-03-17T08:29:38.54 0.6 undecidable manual S 291 0.0674 143 -0.27 48
IV.NRCA.HHZ. 2019-03-17T08:29:37.12 0.1 undecidable manual P 291 0.0674 143 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHN. ML:0.6 1.695E-5 0.78 AML other m 2019-03-17T08:29:48.70
IV.NRCA.HHE. ML:1 0.0004135 1.34 AML other m 2019-03-17T08:29:39.73
IV.TERO.HHE. ML:0.4 1.91E-5 0.84 AML other m 2019-03-17T08:29:48.99
IV.NRCA.HHN. ML:1 0.000163813055 0.0576 AML other m 2019-03-17T08:29:38.59
IV.SMA1.EHN. ML:0.4 1.276365E-5 1.2416 AML other m 2019-03-17T08:29:42.95
IV.FDMO.HHE. ML:0 6.004137E-6 0.0768 AML other m 2019-03-17T08:29:44.43
IV.FDMO.HHN. ML:0.3 1.02189865E-5 0.704 AML other m 2019-03-17T08:29:44.10
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