ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.9 on date 20-03-2019 and time 21:05:44 (UTC) in region 5 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km SE Castelsantangelo sul Nera (MC), on

  • 20-03-2019 21:05:44 (UTC)
  • 20-03-2019 22:05:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.87, 13.2 at 11 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
Castelsantangelo sul Nera MC 5 281 281
Ussita MC 10 444 725
Montemonaco AP 11 604 1329
Montegallo AP 11 523 1852
Visso MC 12 1107 2959
Norcia PG 12 4957 7916
Arquata del Tronto AP 13 1178 9094
Preci PG 14 724 9818
Montefortino FM 14 1178 10996
Bolognola MC 14 142 11138
Amandola FM 18 3629 14767
Acquacanina MC 18 121 14888
Fiastra MC 19 559 15447
Accumoli RI 19 667 16114
Comunanza AP 20 3166 19280
Acquasanta Terme AP 20 2916 22196

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
60 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
94 Km W of Pescara (121014 inhabitants)
98 Km NW of Chieti (51815 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 2019-03-20
21:05:44
42.87 13.2 11 2019-03-20
21:11:00
Sala Sismica INGV-Roma 66735671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 21:05:44 ± 0.06
Latitude 42.87 ± 0.00
Longitude 13.20 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66735671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 627
Semi-minor axis of confidence ellipse (meter) 340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 66735671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 21:11:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-03-20T21:05:57.71 0.6 undecidable manual S 130 0.3822 50 -0.12 46
IV.CESI.HHZ. 2019-03-20T21:05:54.25 0.3 undecidable manual S 302 0.259 50 0.07 71
IV.SMA1.EHZ. 2019-03-20T21:05:54.06 0.3 undecidable manual S 158 0.2554 50 -0.03 72
IV.TERO.HHZ. 2019-03-20T21:05:51.99 0.1 undecidable manual P 130 0.3822 50 -0.01 93
IV.FDMO.HHZ. 2019-03-20T21:05:51.94 0.3 undecidable manual S 333 0.1898 50 -0.19 70
IV.MTRA.EHZ. 2019-03-20T21:05:51.70 0.6 undecidable manual S 128 0.179 50 -0.12 48
IV.SMA1.EHZ. 2019-03-20T21:05:50.36 1.0 negative manual P 158 0.2554 50 0.51 22
IV.MMO1.EHZ. 2019-03-20T21:05:49.18 0.3 undecidable manual S 70 0.0953 136 -0.17 72
IV.CESI.HHZ. 2019-03-20T21:05:49.93 0.6 negative manual P 302 0.259 50 0.03 48
IV.FDMO.HHZ. 2019-03-20T21:05:48.63 0.1 undecidable manual P 333 0.1898 50 -0.08 96
IV.NRCA.HHZ. 2019-03-20T21:05:48.50 0.6 undecidable manual S 243 0.0737 143 -0.32 47
IV.MTRA.EHZ. 2019-03-20T21:05:48.91 0.6 undecidable manual P 128 0.179 50 0.37 45
IV.MC2.EHZ. 2019-03-20T21:05:48.25 0.1 undecidable manual S 346 0.045 155 0 100
IV.MC2.EHZ. 2019-03-20T21:05:46.93 0.1 undecidable manual P 346 0.045 155 0.46 91
IV.NRCA.HHZ. 2019-03-20T21:05:46.71 0.1 negative manual P 243 0.0737 143 -0.09 98
IV.MMO1.EHZ. 2019-03-20T21:05:46.96 0.6 positive manual P 70 0.0953 136 -0.15 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.7 0.00067433615 0.0768 AML other m 2019-03-20T21:05:49.22
IV.NRCA.HHN. ML:1.5 0.0003987357 0.128 AML other m 2019-03-20T21:05:49.24
IV.NRCA.HNE. ML:1.7 0.0006765291 0.0896 AML other m 2019-03-20T21:05:49.26
IV.NRCA.HNN. ML:1.4 0.00035534087 0.128 AML other m 2019-03-20T21:05:49.24
IV.FDMO.HHE. ML:0.6 2.5602125E-5 0.1152 AML other m 2019-03-20T21:05:52.79
IV.FDMO.HHN. ML:0.5 2.2418625E-5 0.1664 AML other m 2019-03-20T21:05:52.97
IV.MTRA.EHE. ML:0.7 3.44538745E-5 0.1152 AML other m 2019-03-20T21:05:52.29
IV.MTRA.EHN. ML:0.6 3.1961362E-5 0.2176 AML other m 2019-03-20T21:05:54.01
IV.MTRA.HNE. ML:1.1 9.087855E-5 0.5632 AML other m 2019-03-20T21:05:49.51
IV.MTRA.HNN. ML:1.2 0.00013093225 0.832 AML other m 2019-03-20T21:05:49.56
IV.CESI.HHE. ML:0.8 3.1503715E-5 0.1536 AML other m 2019-03-20T21:05:54.91
IV.CESI.HHN. ML:0.8 3.6653405E-5 0.1792 AML other m 2019-03-20T21:05:55.31
IV.SMA1.EHE. ML:0.6 1.8791895E-5 0.7936 AML other m 2019-03-20T21:06:02.02
IV.SMA1.EHN. ML:0.6 1.8946035E-5 0.8576 AML other m 2019-03-20T21:05:49.72
IV.TERO.HHE. ML:1 3.3394215E-5 1.344 AML other m 2019-03-20T21:06:07.41
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