ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.8 on date 23-03-2019 and time 11:31:23 (UTC) in region 4 km SE Pietralunga (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 23-03-2019 11:31:23 (UTC)
  • 23-03-2019 12:31:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.42, 12.46 at 5 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
Pietralunga PG 4 2111 2111
Gubbio PG 12 32216 34327
Montone PG 12 1680 36007
Cantiano PU 15 2245 38252
Umbertide PG 16 16681 54933
Apecchio PU 16 1882 56815
Scheggia e Pascelupo PG 17 1393 58208
Città di Castello PG 19 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
55 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
92 Km E of Siena (53903 inhabitants)
96 Km N of Terni (111501 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 0.8 2019-03-23
11:31:23
43.42 12.47 5 2019-03-23
11:37:53
Sala Sismica INGV-Roma 66835071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-23 11:31:23 ± 0.11
Latitude 43.42 ± 0.00
Longitude 12.47 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66835071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 508
Semi-minor axis of confidence ellipse (meter) 124
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 60
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30217
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 66835071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-23 11:37:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
TV.SF04.EHZ. 2019-03-23T11:31:39.84 0.6 undecidable manual P -0.01 0.9
IV.ATCC.EHZ. 2019-03-23T11:31:34.15 0.6 undecidable manual S 151 0.2626 100 0.45 44
IV.BADI.EHZ. 2019-03-23T11:31:31.19 0.6 undecidable manual S 301 0.1862 104 0.37 46
IV.MURB.HHZ. 2019-03-23T11:31:30.23 0.6 undecidable manual S 164 0.1583 107 0.45 45
IV.MPAG.EHZ. 2019-03-23T11:31:29.75 0.1 undecidable manual P 45 0.3022 99 -0.47 87
IV.PIEI.HHZ. 2019-03-23T11:31:29.24 0.6 undecidable manual S 23 0.1304 110 0.45 45
IV.ATCC.EHZ. 2019-03-23T11:31:29.14 0.1 undecidable manual P 151 0.2626 100 -0.21 93
IV.ATTE.HHE. 2019-03-23T11:31:28.48 0.3 undecidable manual P 201 0.232 102 -0.2 70
IV.MURB.HHZ. 2019-03-23T11:31:27.12 0.6 undecidable manual P 164 0.1583 107 0.03 49
IV.ATFO.HHZ. 2019-03-23T11:31:27.48 0.6 undecidable manual S 122 0.0908 118 0.09 49
IV.BADI.EHZ. 2019-03-23T11:31:27.80 0.1 undecidable manual P 301 0.1862 104 0.11 96
IV.PIEI.HHZ. 2019-03-23T11:31:26.56 0.1 positive manual P 23 0.1304 110 0.04 99
IV.ATPI.EHZ. 2019-03-23T11:31:26.32 0.6 undecidable manual S 308 0.0576 130 0 50
IV.ATPI.EHZ. 2019-03-23T11:31:25.05 0.1 undecidable manual P 308 0.0576 130 -0.04 100
IV.ATFO.HHZ. 2019-03-23T11:31:25.70 0.6 positive manual P 122 0.0908 118 -0.01 50
IV.ATVO.HHZ. 2019-03-23T11:31:25.91 0.6 undecidable manual S 232 0.054 132 -0.29 48
IV.ATVO.HHZ. 2019-03-23T11:31:24.88 0.1 undecidable manual P 232 0.054 132 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0 0.00033816215 0.224 AML other m 2019-03-23T11:31:27.70
IV.ATVO.HHN. ML:0 0.0002065952 0.32 AML other m 2019-03-23T11:31:26.47
IV.ATPI.EHE. ML:0 0.0001794119 0.3008 AML other m 2019-03-23T11:31:27.63
IV.ATPI.EHN. ML:0 0.00014947835 0.3968 AML other m 2019-03-23T11:31:27.57
IV.ATFO.HHE. ML:0.8 0.00010964395 0.224 AML other m 2019-03-23T11:31:28.25
IV.ATFO.HHN. ML:0.7 8.560749E-5 0.1792 AML other m 2019-03-23T11:31:28.38
IV.PIEI.HHE. ML:0.7 6.0928095E-5 0.096 AML other m 2019-03-23T11:31:29.99
IV.PIEI.HHN. ML:0.3 2.65348755E-5 0.1408 AML other m 2019-03-23T11:31:30.49
IV.MURB.HNE. ML:1.4 0.00025519175 0.288 AML other m 2019-03-23T11:31:30.76
IV.MURB.HNN. ML:1.2 0.00015499015 0.2688 AML other m 2019-03-23T11:31:31.57
IV.MURB.HHE. ML:1.5 0.00027348035 0.3392 AML other m 2019-03-23T11:31:30.76
IV.MURB.HHN. ML:1.1 0.00012153445 0.2048 AML other m 2019-03-23T11:31:31.56
IV.BADI.EHE. ML:0.9 6.627147E-5 0.1408 AML other m 2019-03-23T11:31:31.41
IV.BADI.EHN. ML:0.8 5.5622545E-5 0.1408 AML other m 2019-03-23T11:31:31.49
IV.ATCC.EHE. ML:1 5.164599E-5 0.1408 AML other m 2019-03-23T11:31:34.33
IV.ATCC.EHN. ML:0.9 4.1705845E-5 0.16 AML other m 2019-03-23T11:31:34.43
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