INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 17-03-2017 and time 02:33:33 (Italy) in region 4 km S Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 4 km S Amatrice (RI), on

  • 17-03-2017 01:33:33 (UTC)
  • 17-03-2017 02:33:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6, 13.28 at 7 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
Amatrice RI 4 2657 2657
Montereale AQ 9 2581 5238
Capitignano AQ 9 665 5903
Campotosto AQ 9 542 6445
Cittareale RI 10 482 6927
Accumoli RI 11 667 7594
Borbona RI 15 617 8211
Cagnano Amiterno AQ 16 1369 9580
Barete AQ 16 737 10317
Posta RI 17 694 11011
Crognaleto TE 18 1297 12308
Pizzoli AQ 18 4326 16634
Cortino TE 19 656 17290
Arquata del Tronto AP 20 1178 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
78 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
98 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 0.9 2017-03-17
01:33:33
42.6 13.28 7 2017-03-17
01:51:46
Sala Sismica INGV-Roma 42518401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-17 01:33:33 ± 0.27
Latitude 42.60 ± 0.00
Longitude 13.28 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 42518401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 784
Semi-minor axis of confidence ellipse (meter) 537
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 780
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.22933
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 42518401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-17 01:51:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2017-03-17T01:34:33.26 3.0 negative manual Pn -0.19 0
IV.ERC.EHZ. 2017-03-17T01:34:32.64 3.0 undecidable manual Pn 1.24 0
RD.PGF.BHZ. 2017-03-17T01:34:27.90 3.0 undecidable manual Pn 12.13 0
IV.T1212.EHZ. 2017-03-17T01:33:42.61 0.1 undecidable manual S 312 0.2293 105 -0.29 91
IV.T1218.EHZ. 2017-03-17T01:33:39.86 0.3 undecidable manual S 301 0.1385 114 0.26 70
IV.T1212.EHZ. 2017-03-17T01:33:39.13 0.3 undecidable manual P 312 0.2293 105 0.09 71
IV.RM33.EHZ. 2017-03-17T01:33:38.28 0.1 undecidable manual S 207 0.1007 121 -0.03 99
IV.T1218.EHZ. 2017-03-17T01:33:37.28 0.3 undecidable manual P 301 0.1385 114 0.14 72
IV.T1101.HNZ. 2017-03-17T01:33:37.10 3.0 undecidable manual Pn -2.87 0
IV.T1299.EHZ. 2017-03-17T01:33:36.46 0.1 undecidable manual S 6 0.036 150 -0.02 100
IV.RM33.EHZ. 2017-03-17T01:33:36.34 0.1 undecidable manual P 207 0.1007 121 -0.05 98
IV.T1299.EHZ. 2017-03-17T01:33:35.36 0.1 undecidable manual P 6 0.036 150 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.2 0.0001939492 1.04 AML other m 2017-03-17T01:33:59.80
IV.RM33.EHE. ML:0.6 5.812318E-5 0.16 AML other m 2017-03-17T01:33:40.00
IV.RM33.HNN. ML:0.9 0.000113935085 0.8896 AML other m 2017-03-17T01:33:37.47
IV.RM33.EHN. ML:0.7 6.7152595E-5 0.28 AML other m 2017-03-17T01:33:38.68
IV.T1212.HNN. ML:1.1 6.756088E-5 0.64 AML other m 2017-03-17T01:33:41.45
IV.T1212.HNE. ML:1.4 0.00014217551 0.736 AML other m 2017-03-17T01:33:47.19
IV.T1218.EHN. ML:0.5 3.204253E-5 0.112 AML other m 2017-03-17T01:33:40.54
IV.T1218.HNN. ML:1.1 0.0001234951 0.864 AML other m 2017-03-17T01:34:02.81
IV.T1218.EHE. ML:0.6 3.75237755E-5 0.192 AML other m 2017-03-17T01:33:40.06
IV.T1218.HNE. ML:0.9 7.833889E-5 1.152 AML other m 2017-03-17T01:34:11.99
IV.T1299.EHE. ML:0 0.00017854465 0.2 AML other m 2017-03-17T01:33:36.72
IV.T1299.HNE. ML:0 0.000194854875 0.2 AML other m 2017-03-17T01:33:36.81
IV.T1299.EHN. ML:0 8.3659225E-5 0.1 AML other m 2017-03-17T01:33:36.60
IV.T1299.HNN. ML:0 0.00018299975 0.92 AML other m 2017-03-17T01:33:39.60
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