INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.7 on date 09-08-2018 and time 06:58:29 (Italy) in region 3 km E Pietralunga (PG)

A magnitude ML 0.7 earthquake occured in region: 3 km E Pietralunga (PG), on

  • 09-08-2018 04:58:29 (UTC)
  • 09-08-2018 06:58:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.44, 12.47 at 6 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 3 2111 2111
Cantiano PU 13 2245 4356
Gubbio PG 13 32216 36572
Apecchio PU 14 1882 38454
Montone PG 14 1680 40134
Piobbico PU 17 2029 42163
Scheggia e Pascelupo PG 17 1393 43556
Cagli PU 19 8731 52287
Città di Castello PG 19 39913 92200
Umbertide PG 19 16681 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
57 Km NW of Foligno (57155 inhabitants)
63 Km SW of Fano (60888 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
69 Km S of Rimini (147750 inhabitants)
79 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
93 Km SE of Forlì (117913 inhabitants)
99 Km N of Terni (111501 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 Md 0.9
ML 0.7
2018-08-09
04:58:29
43.44 12.47 6 2018-08-09
05:07:01
Sala Sismica INGV-Roma 59541241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-09 04:58:29 ± 0.19
Latitude 43.44 ± 0.00
Longitude 12.47 ± 0.01
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59541241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 401
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.20055
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 59541241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-09 05:07:01

Md:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 2
Type of magnitude Md
Reference to an origin 59541241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-09 05:07:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CPOZ.HHZ. 2018-08-09T04:59:45.50 3.0 undecidable manual Sn -3.89 0
IV.IST3.HHZ. 2018-08-09T04:59:39.09 3.0 positive manual Pn 0.85 0
SL.KOGS.BHZ. 2018-08-09T04:59:34.92 3.0 undecidable manual Pg 12.7 0
IV.MRGE.HHZ. 2018-08-09T04:59:12.18 3.0 positive manual Pn -0.4 0
IV.MILN.HNZ. 2018-08-09T04:58:54.67 3.0 negative manual Pn 0.56 0
IV.FRON.EHZ. 2018-08-09T04:58:37.73 0.3 undecidable manual S 68 0.2005 104 0.05 73
IV.APEC.HHZ. 2018-08-09T04:58:35.01 0.3 undecidable manual S 343 0.1205 113 0.24 71
IV.FRON.EHZ. 2018-08-09T04:58:34.23 0.1 undecidable manual P 68 0.2005 104 -0.09 96
IV.ATVO.HHZ. 2018-08-09T04:58:33.34 0.3 undecidable manual S 217 0.0755 124 0.09 74
IV.RIBO.EHZ.01 2018-08-09T04:58:33.21 3.0 undecidable manual P 2.64 0
IV.APEC.HHZ. 2018-08-09T04:58:32.53 0.1 undecidable manual P 343 0.1205 113 -0.11 98
IV.ATPI.EHZ. 2018-08-09T04:58:32.30 0.3 undecidable manual S 279 0.0495 136 -0.16 73
IV.ATPI.EHZ. 2018-08-09T04:58:31.25 0.1 undecidable manual P 279 0.0495 136 -0.05 100
IV.ATVO.HHZ. 2018-08-09T04:58:31.83 0.1 undecidable manual P 217 0.0755 124 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:0 8.67E-5 0.28 AML other m 2018-08-09T04:58:32.41
IV.ATPI.EHE. ML:0 6.745E-5 1.64 AML other m 2018-08-09T04:58:32.90
IV.ATVO.HHN. ML:0.5 5.94E-5 0.4 AML other m 2018-08-09T04:58:33.72
IV.ATVO.HHE. ML:0.8 0.0001185 0.12 AML other m 2018-08-09T04:58:33.72
IV.APEC.HHE. ML:0.7 6.215E-5 0.16 AML other m 2018-08-09T04:58:35.38
IV.APEC.HHN. ML:0.6 5.17E-5 0.08 AML other m 2018-08-09T04:58:43.99
IV.ATPI.EHZ. Md:0.9 7 END duration s
IV.ATVO.HHZ. Md:0.9 7 END duration s
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