Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 09-12-2023 and time 00:36:32 (Italy) in region 5 km SE Deruta (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km SE Deruta (PG), on

  • 08-12-2023 23:36:32 (UTC)
  • 09-12-2023 00:36:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9470, 12.4640 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Deruta PG 5 9669 9669
Collazzone PG 6 3473 13142
Bettona PG 8 4367 17509
Gualdo Cattaneo PG 9 6155 23664
Torgiano PG 9 6725 30389
Marsciano PG 11 18902 49291
Cannara PG 11 4305 53596
Bevagna PG 12 5081 58677
Fratta Todina PG 13 1839 60516
Monte Castello di Vibio PG 15 1567 62083
Bastia Umbra PG 15 21874 83957
Giano dell'Umbria PG 16 3846 87803
Montefalco PG 17 5679 93482
Spello PG 18 8645 102127
San Venanzo TR 18 2218 104345
Assisi PG 19 28299 132644
Todi PG 19 16851 149495
Perugia PG 19 166134 315629
Massa Martana PG 20 3770 319399
Foligno PG 20 57155 376554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SE of Perugia (166134 inhabitants)
20 Km W of Foligno (57155 inhabitants)
45 Km NW of Terni (111501 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
75 Km SE of Arezzo (99543 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.1 2023-12-08
23:36:32		 42.9467 12.4638 8 2023-12-08
23:43:23		 Sala Sismica INGV-Roma 123906271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-08 23:36:32 ± 0.07
Latitude 42.9467 ± 0.0027
Longitude 12.4638 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123906271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 411
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 189
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56028
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 123906271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-08 23:43:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2023-12-08T23:36:52.60 3.0 undecidable manual S -0.39 0
IV.SSFR.HHZ. 2023-12-08T23:36:51.79 0.6 undecidable manual S -0.08 0.95
IV.MTCE.HHZ. 2023-12-08T23:36:50.49 3.0 positive manual P 0.49 0
IV.NRCA.HHZ. 2023-12-08T23:36:49.78 0.3 undecidable manual S 103 54.3012 50 0.07 70
IV.ATMI.HHZ. 2023-12-08T23:36:47.30 0.3 undecidable manual S 340 45.8208 50 -0.14 70
IV.ATCC.EHZ. 2023-12-08T23:36:43.00 0.6 undecidable manual S 28 30.0477 105 0.06 49
IV.CSP1.EHZ. 2023-12-08T23:36:43.40 1.0 undecidable manual P 75 62.1933 50 -0.1 23
IV.ATMI.HHZ. 2023-12-08T23:36:41.15 0.1 undecidable manual P 340 45.8208 50 0.18 92
IV.NRCA.HHZ. 2023-12-08T23:36:41.98 1.0 undecidable manual P 103 54.3012 50 -0.3 22
IV.ASSB.HHZ. 2023-12-08T23:36:39.32 0.3 undecidable manual S 56 19.0698 113 -0.01 75
IV.ATCC.EHZ. 2023-12-08T23:36:38.25 0.1 undecidable manual P 28 30.0477 105 -0.12 96
IV.MOMA.HHZ. 2023-12-08T23:36:38.95 0.6 undecidable manual S 151 18.0708 115 -0.06 50
IV.MOMA.HHZ. 2023-12-08T23:36:36.12 0.1 undecidable manual P 151 18.0708 115 0.02 100
IV.ASSB.HHZ. 2023-12-08T23:36:36.37 0.1 negative manual P 56 19.0698 113 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:0.9 0.00006185 0.28 AML other m 2023-12-08T23:36:39.71
IV.MOMA.HHN. ML:1.3 0.000187 0.3 AML other m 2023-12-08T23:36:40.20
IV.ASSB.HHE. ML:0.9 0.00007225 0.54 AML other m 2023-12-08T23:36:40.90
IV.MOMA.HHE. ML:1.2 0.00014696345 0.192 AML other m 2023-12-08T23:36:39.05
IV.MOMA.HNE. ML:1.3 0.00016561039999999998 0.2048 AML other m 2023-12-08T23:36:40.35
IV.MOMA.HNN. ML:1.2 0.00014319585 0.3072 AML other m 2023-12-08T23:36:40.89
IV.ATCC.EHE. ML:1.0 0.000054679315 0.32 AML other m 2023-12-08T23:36:43.51
IV.NRCA.HHE. ML:1.0 0.0000236910163 0.256 AML other m 2023-12-08T23:36:51.87
IV.NRCA.HHN. ML:1.0 0.00002685209 0.128 AML other m 2023-12-08T23:36:51.34
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download