Earthquake with magnitude of ML 0.5 on date 03-04-2020 and time 23:52:07 (Italy) in region 2 km W Frontone (PU)

A magnitude ML 0.5 earthquake occured in region: 2 km W Frontone (PU), on

  • 03-04-2020 21:52:07 (UTC)
  • 03-04-2020 23:52:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.51, 12.72 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
Frontone PU 2 1300 1300
Serra Sant'Abbondio PU 5 1027 2327
Cagli PU 7 8731 11058
Cantiano PU 8 2245 13303
Pergola PU 11 6333 19636
Acqualagna PU 12 4393 24029
Scheggia e Pascelupo PG 13 1393 25422
Sassoferrato AN 14 7285 32707
Costacciaro PG 17 1216 33923
Arcevia AN 18 4612 38535
Piobbico PU 19 2029 40564
Fermignano PU 19 8596 49160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SW of Fano (60888 inhabitants)
47 Km SW of Pesaro (94582 inhabitants)
52 Km NE of Perugia (166134 inhabitants)
62 Km N of Foligno (57155 inhabitants)
62 Km S of Rimini (147750 inhabitants)
66 Km W of Ancona (100861 inhabitants)
67 Km E of Arezzo (99543 inhabitants)
79 Km SE of Cesena (96758 inhabitants)
96 Km SE of Forlì (117913 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 0.5 2020-04-03
21:52:07
43.51 12.72 11 2020-04-03
22:04:31
Sala Sismica INGV-Roma 77849681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-03 21:52:07 ± 0.1
Latitude 43.51 ± 0.01
Longitude 12.72 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77849681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 917
Semi-minor axis of confidence ellipse (meter) 314
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 920
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16458
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 77849681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-03 22:04:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-04-03T21:53:13.24 3.0 undecidable manual Sg 12.11 0
IV.PTRJ.HNZ. 2020-04-03T21:53:11.76 3.0 undecidable manual Sn 0.49 0
IV.PAOL.HHZ. 2020-04-03T21:53:11.84 3.0 undecidable manual Sn -6.7 0
CR.STON.BHZ. 2020-04-03T21:53:01.48 3.0 positive manual Pn 1.6 0
ST.OZOL.EHZ. 2020-04-03T21:52:55.91 3.0 negative manual Pg 2.55 0
IV.MILN.HNZ. 2020-04-03T21:52:49.50 3.0 undecidable manual Pn -3.79 0
IV.IFOR.HHZ. 2020-04-03T21:52:48.02 3.0 undecidable manual Pn 0.87 0
IV.PAOL.HHZ. 2020-04-03T21:52:48.84 3.0 undecidable manual Pg 2.62 0
IV.MBAL.EHZ. 2020-04-03T21:52:45.44 3.0 negative manual Pg 0.08 0
IV.FIR.HHZ. 2020-04-03T21:52:38.60 3.0 undecidable manual Sg -0.21 0
IV.MIDA.HHZ. 2020-04-03T21:52:38.45 3.0 undecidable manual Pg 1.05 0
IV.OSSC.HHZ. 2020-04-03T21:52:37.90 3.0 undecidable manual Sg 0.52 0
IV.MC2.EHZ. 2020-04-03T21:52:15.75 3.0 undecidable manual P -1.19 0
IV.NARO.HHZ. 2020-04-03T21:52:14.14 0.1 undecidable manual S 315 0.1385 98 -0.05 97
IV.ARVD.HHZ. 2020-04-03T21:52:14.79 0.1 undecidable manual S 95 0.1646 94 -0.16 94
IV.PIEI.HHZ. 2020-04-03T21:52:13.93 0.1 undecidable manual S 280 0.1331 100 -0.1 95
IV.PIEI.HHZ. 2020-04-03T21:52:11.48 0.6 undecidable manual P 280 0.1331 100 0.15 48
IV.NARO.HHZ. 2020-04-03T21:52:11.61 0.6 undecidable manual P 315 0.1385 98 0.19 47
IV.FRON.EHZ. 2020-04-03T21:52:11.57 0.1 undecidable manual S 56 0.009 174 0 100
IV.ARVD.HHZ. 2020-04-03T21:52:11.96 0.6 undecidable manual P 95 0.1646 94 0.11 48
IV.FRON.EHZ. 2020-04-03T21:52:10.09 1.0 undecidable manual P 56 0.009 174 0.19 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHN. ML:0.3 1.94E-5 0.42 AML other m 2020-04-03T21:52:13.14
IV.NARO.HHE. ML:0.5 3.22E-5 0.06 AML other m 2020-04-03T21:52:14.33
IV.PIEI.HHE. ML:0.6 3.305E-5 0.06 AML other m 2020-04-03T21:52:14.39
IV.NARO.HHN. ML:0.4 2.005E-5 0.62 AML other m 2020-04-03T21:52:14.22
IV.MBAL.HNE. ML:3.2 0.0002315 0.42 AML other m 2020-04-03T21:53:15.05
IV.MBAL.HNN. ML:3.2 0.000236 0.54 AML other m 2020-04-03T21:53:48.91
IV.MBAL.EHE. ML:3.2 0.0002085 0.06 AML other m 2020-04-03T21:53:48.92
IV.MBAL.EHN. ML:3 0.0001565 1.14 AML other m 2020-04-03T21:53:52.39
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