Earthquake with magnitude of ML 1.4 on date 03-01-2020 and time 03:56:05 (Italy) in region 3 km E Acquasparta (TR)

A magnitude ML 1.4 earthquake occured in region: 3 km E Acquasparta (TR), on

  • 03-01-2020 02:56:05 (UTC)
  • 03-01-2020 03:56:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.69, 12.59 at 9 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
Acquasparta TR 3 4778 4778
San Gemini TR 9 5018 9796
Montecastrilli TR 9 5022 14818
Massa Martana PG 11 3770 18588
Avigliano Umbro TR 13 2558 21146
Spoleto PG 14 38218 59364
Terni TR 15 111501 170865
Giano dell'Umbria PG 16 3846 174711
Castel Ritaldi PG 17 3278 177989
Montefranco TR 18 1276 179265
Todi PG 18 16851 196116
Ferentillo TR 18 1913 198029
Arrone TR 19 2763 200792
Narni TR 19 19785 220577

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Terni (111501 inhabitants)
32 Km SW of Foligno (57155 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
49 Km NE of Viterbo (67173 inhabitants)
76 Km W of L'Aquila (69753 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
82 Km N of Tivoli (56533 inhabitants)
89 Km N of Roma (2864731 inhabitants)
92 Km W of Teramo (54892 inhabitants)
93 Km NE of Civitavecchia (52991 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 1.4 2020-01-03
02:56:05
42.69 12.59 9 2020-01-03
03:00:26
Sala Sismica INGV-Roma 75214441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-03 02:56:05 ± 0.1
Latitude 42.69 ± 0.01
Longitude 12.59 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75214441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 718
Semi-minor axis of confidence ellipse (meter) 458
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 720
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.74374
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 75214441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-03 03:00:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-01-03T02:56:31.10 0.6 undecidable manual S 30 0.7437 50 1.1 31
IV.MMO1.EHZ. 2020-01-03T02:56:25.54 0.6 undecidable manual S 68 0.5828 50 0.31 43
IV.EL6.EHZ. 2020-01-03T02:56:19.45 0.1 undecidable manual P 30 0.7437 50 -0.02 89
IV.CSP1.EHZ. 2020-01-03T02:56:17.14 0.6 undecidable manual P 48 0.607 50 0.01 46
IV.MMO1.EHZ. 2020-01-03T02:56:16.42 0.1 undecidable manual P 68 0.5828 50 -0.29 87
IV.NRCA.HHZ. 2020-01-03T02:56:13.57 0.1 positive manual P 69 0.4137 50 -0.25 91
IV.GAVE.EHZ. 2020-01-03T02:56:13.99 0.6 undecidable manual S 89 0.2266 110 -0.35 46
IV.CESI.HHZ. 2020-01-03T02:56:13.48 0.3 undecidable manual P 36 0.3939 50 0 72
IV.MGAB.HHZ. 2020-01-03T02:56:13.77 0.1 undecidable manual P 303 0.4146 50 -0.06 95
IV.ASSB.HHZ. 2020-01-03T02:56:12.70 0.3 negative manual P 8 0.3588 50 -0.18 70
IV.ARRO.EHZ. 2020-01-03T02:56:12.86 0.6 undecidable manual S 129 0.1709 116 0.5 45
IT.GNU.HGZ. 2020-01-03T02:56:10.54 0.6 undecidable manual S 354 0.1169 125 -0.04 50
IV.GAVE.EHZ. 2020-01-03T02:56:10.09 0.6 negative manual P 89 0.2266 110 -0.34 46
IV.MOMA.HHZ. 2020-01-03T02:56:10.49 0.6 undecidable manual S 354 0.1169 125 -0.09 50
IV.ARRO.EHZ. 2020-01-03T02:56:09.52 0.6 positive manual P 129 0.1709 116 0.24 48
IV.CESX.HHZ. 2020-01-03T02:56:09.31 0.6 undecidable manual S 180 0.0791 136 -0.15 50
IV.MOMA.HHZ. 2020-01-03T02:56:08.35 0.1 positive manual P 354 0.1169 125 0.09 99
IT.GNU.HGZ. 2020-01-03T02:56:08.37 0.1 undecidable manual P 354 0.1169 125 0.12 99
IV.CESX.HHZ. 2020-01-03T02:56:07.71 0.1 negative manual P 180 0.0791 136 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.7 0.00076 0.42 AML other m 2020-01-03T02:56:09.64
IV.CESX.HHE. ML:1.6 0.000548 0.2 AML other m 2020-01-03T02:56:09.81
IV.MOMA.HHN. ML:1.4 0.00027 0.42 AML other m 2020-01-03T02:56:10.59
IV.MOMA.HHE. ML:1.6 0.000449 0.2 AML other m 2020-01-03T02:56:11.82
IV.ARRO.EHN. ML:1 8.605E-5 0.18 AML other m 2020-01-03T02:56:13.65
IV.ARRO.EHE. ML:1 7.595E-5 0.2 AML other m 2020-01-03T02:56:14.27
IV.GAVE.EHE. ML:1.5 0.000197 0.24 AML other m 2020-01-03T02:56:14.47
IV.GAVE.EHN. ML:1.4 0.000135 0.16 AML other m 2020-01-03T02:56:15.50
IV.ASSB.HHN. ML:1.2 5.355E-5 0.52 AML other m 2020-01-03T02:56:20.02
IV.NRCA.HHN. ML:1.6 0.0001315 0.14 AML other m 2020-01-03T02:56:20.55
IV.NRCA.HHE. ML:1.6 0.000129 0.56 AML other m 2020-01-03T02:56:20.55
IV.ASSB.HHE. ML:1.2 5.01E-5 1.04 AML other m 2020-01-03T02:56:21.14
IV.CSP1.EHN. ML:1.4 4.875E-5 0.28 AML other m 2020-01-03T02:56:27.15
IV.CSP1.EHE. ML:1.6 6.695E-5 1.58 AML other m 2020-01-03T02:56:27.90
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