Earthquake with magnitude of ML 1.2 on date 01-09-2019 and time 07:01:47 (Italy) in region 4 km E Massa Martana (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km E Massa Martana (PG), on

  • 01-09-2019 05:01:47 (UTC)
  • 01-09-2019 07:01:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 12.57 at 8 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
Massa Martana PG 4 3770 3770
Giano dell'Umbria PG 6 3846 7616
Castel Ritaldi PG 10 3278 10894
Acquasparta TR 11 4778 15672
Todi PG 13 16851 32523
Gualdo Cattaneo PG 14 6155 38678
Montefalco PG 14 5679 44357
Spoleto PG 15 38218 82575
Collazzone PG 16 3473 86048
Montecastrilli TR 16 5022 91070
Bevagna PG 17 5081 96151
Campello sul Clitunno PG 18 2442 98593
Trevi PG 18 8469 107062
Fratta Todina PG 18 1839 108901
Avigliano Umbro TR 18 2558 111459
Monte Castello di Vibio PG 19 1567 113026
San Gemini TR 19 5018 118044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
39 Km SE of Perugia (166134 inhabitants)
56 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 inhabitants)
94 Km W of Teramo (54892 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
99 Km N of Roma (2864731 inhabitants)
100 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 1.2 2019-09-01
05:01:47
42.78 12.57 8 2019-09-01
05:09:49
Sala Sismica INGV-Roma 71998351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-01 05:01:47 ± 0.14
Latitude 42.78 ± 0.00
Longitude 12.57 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71998351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1086
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 1090
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45596
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 71998351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-01 05:09:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PZUN.HHZ. 2019-09-01T05:03:29.88 3.0 undecidable manual Sg 8 0
IV.MCRV.HHZ. 2019-09-01T05:03:15.31 3.0 undecidable manual Sg 4.2 0
IV.PTRJ.HHZ. 2019-09-01T05:02:21.01 3.0 undecidable manual Pn -3.15 0
IV.FDMO.HHZ. 2019-09-01T05:02:04.24 0.1 undecidable manual S 56 0.456 50 0.26 90
IV.NRCA.HHZ. 2019-09-01T05:02:02.51 0.1 undecidable manual S 83 0.4029 50 0.08 94
IV.LNSS.HHZ. 2019-09-01T05:02:01.74 0.1 undecidable manual S 118 0.3912 50 -0.34 90
IV.ARRO.EHZ. 2019-09-01T05:01:57.53 0.1 undecidable manual S 145 0.2518 106 0.03 98
IV.ASSB.HHZ. 2019-09-01T05:01:57.93 0.1 undecidable manual S 14 0.2662 106 -0.1 96
IV.NRCA.HHZ. 2019-09-01T05:01:56.06 0.1 undecidable manual P 83 0.4029 50 -0.01 96
IV.FDMO.HHZ. 2019-09-01T05:01:56.88 1.0 negative manual P 56 0.456 50 -0.09 23
IV.LNSS.HHZ. 2019-09-01T05:01:55.89 0.3 undecidable manual P 118 0.3912 50 0.02 72
IV.MGAB.HHZ. 2019-09-01T05:01:55.34 3.0 negative manual P 0.97 0
IV.CESX.HHZ. 2019-09-01T05:01:54.77 0.1 undecidable manual S 176 0.1763 113 -0.01 100
IV.ARRO.EHZ. 2019-09-01T05:01:53.34 0.6 negative manual P 145 0.2518 106 0.11 48
IV.ASSB.HHZ. 2019-09-01T05:01:53.47 0.3 positive manual P 14 0.2662 106 -0.07 73
IV.CESX.HHZ. 2019-09-01T05:01:51.85 0.6 undecidable manual P 176 0.1763 113 0.19 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.2 0.000119 0.42 AML other m 2019-09-01T05:01:56.14
IV.CESX.HHE. ML:1.3 0.0001495 0.48 AML other m 2019-09-01T05:01:56.16
IV.ASSB.HHE. ML:0.9 3.81E-5 0.3 AML other m 2019-09-01T05:01:58.48
IV.ASSB.HHN. ML:0.8 3.74E-5 0.7 AML other m 2019-09-01T05:01:59.48
IV.ARRO.EHE. ML:0.8 3.21E-5 0.88 AML other m 2019-09-01T05:01:59.84
IV.ARRO.EHN. ML:0.8 3.61E-5 1.16 AML other m 2019-09-01T05:02:00.61
IV.LNSS.HHE. ML:1.3 6.68E-5 1.4 AML other m 2019-09-01T05:02:02.00
IV.MGAB.HHE. ML:1.2 5.77E-5 0.56 AML other m 2019-09-01T05:02:02.01
IV.NRCA.HHN. ML:1.3 6.605E-5 0.14 AML other m 2019-09-01T05:02:03.15
IV.MGAB.HHN. ML:1 3.395E-5 0.4 AML other m 2019-09-01T05:02:03.70
IV.NRCA.HHE. ML:1.5 9.205E-5 1.04 AML other m 2019-09-01T05:02:04.26
IV.LNSS.HHN. ML:1.2 5.165E-5 1.52 AML other m 2019-09-01T05:02:04.07
IV.FDMO.HHN. ML:1.2 3.805E-5 0.12 AML other m 2019-09-01T05:02:04.93
IV.FDMO.HHE. ML:1.1 3.33E-5 1 AML other m 2019-09-01T05:02:04.47
IV.PTRJ.HHE. ML:1.8 1.3425E-5 0.98 AML other m 2019-09-01T05:02:59.25
IV.PTRJ.HHN. ML:2.2 3.605E-5 0.12 AML other m 2019-09-01T05:03:16.80
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