Earthquake with magnitude of ML 1.2 on date 07-12-2021 and time 11:08:38 (Italy) in region 5 km N Belmonte in Sabina (RI)

A magnitude ML 1.2 earthquake occured in region: 5 km N Belmonte in Sabina (RI), on

  • 07-12-2021 10:08:38 (UTC)
  • 07-12-2021 11:08:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3620, 12.8990 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Belmonte in Sabina RI 5 636 636
Cittaducale RI 5 6828 7464
Rieti RI 6 47698 55162
Concerviano RI 8 291 55453
Rocca Sinibalda RI 10 815 56268
Monte San Giovanni in Sabina RI 11 714 56982
Longone Sabino RI 11 597 57579
Montenero Sabino RI 11 299 57878
Torricella in Sabina RI 11 1342 59220
Castel Sant'Angelo RI 12 1308 60528
Cantalice RI 12 2755 63283
Contigliano RI 12 3783 67066
Poggio San Lorenzo RI 13 589 67655
Borgo Velino RI 14 972 68627
Casaprota RI 14 744 69371
Monteleone Sabino RI 15 1224 70595
Greccio RI 15 1558 72153
Poggio Bustone RI 16 2055 74208
Petrella Salto RI 16 1197 75405
Antrodoco RI 16 2588 77993
Micigliano RI 16 127 78120
Frasso Sabino RI 17 743 78863
Varco Sabino RI 17 187 79050
Colle di Tora RI 17 372 79422
Castel di Tora RI 17 288 79710
Salisano RI 17 567 80277
Mompeo RI 17 530 80807
Roccantica RI 18 563 81370
Rivodutri RI 18 1253 82623
Poggio Moiano RI 18 2751 85374
Montasola RI 18 395 85769
Cottanello RI 18 563 86332
Poggio Nativo RI 18 2622 88954
Colli sul Velino RI 18 533 89487
Poggio Catino RI 19 1341 90828
Casperia RI 19 1246 92074
Morro Reatino RI 19 373 92447
Castelnuovo di Farfa RI 19 1059 93506
Marcetelli RI 19 89 93595
Labro RI 20 374 93969
Ascrea RI 20 234 94203

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of Terni (111501 inhabitants)
41 Km W of L'Aquila (69753 inhabitants)
43 Km NE of Guidonia Montecelio (88673 inhabitants)
45 Km N of Tivoli (56533 inhabitants)
62 Km NE of Roma (2864731 inhabitants)
66 Km E of Viterbo (67173 inhabitants)
68 Km S of Foligno (57155 inhabitants)
74 Km W of Teramo (54892 inhabitants)
76 Km N of Velletri (53303 inhabitants)
84 Km NE of Pomezia (62966 inhabitants)
85 Km NE of Fiumicino (78395 inhabitants)
88 Km N of Aprilia (73446 inhabitants)
93 Km SE of Perugia (166134 inhabitants)
96 Km E of Civitavecchia (52991 inhabitants)
99 Km N of Latina (125985 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.2 2021-12-07
10:08:38
42.3617 12.8993 10 2022-03-30
13:04:22
Bollettino Sismico Italiano INGV 98617091
Reviewed
Rev100
ML 1.4 2021-12-07
10:08:38
42.3538 12.8935 17 2021-12-07
10:16:47
Sala Sismica INGV-Roma 98233931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 10:08:38 ± 0.05
Latitude 42.3617 ± 0.0135
Longitude 12.8993 ± 0.0049
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98617091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1459
Semi-minor axis of confidence ellipse (meter) 368
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 1460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.15828
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98617091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-17 09:47:43

ML:1.4

Field Value
Value 1.4
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 98233931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 10:16:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-12-07T10:08:55.59 0.6 undecidable manual S 18 0.4973 50 -0.11 46
IV.GAVE.EHZ. 2021-12-07T10:08:50.67 0.3 undecidable manual S 359 0.3301 50 -0.08 72
IV.RM33.HNN. 2021-12-07T10:08:49.15 0.3 undecidable manual S 58 0.2752 50 0.03 73
IV.LNSS.HHZ. 2021-12-07T10:08:48.99 0.3 undecidable manual S 23 0.2626 50 0.25 70
IV.NRCA.HHZ. 2021-12-07T10:08:48.48 0.1 undecidable manual P 18 0.4973 50 0.12 92
IV.ARRO.EHZ. 2021-12-07T10:08:47.63 0.6 undecidable manual S 336 0.2383 50 -0.4 46
IV.FIAM.HHZ. 2021-12-07T10:08:46.05 0.6 undecidable manual S 120 0.1862 116 -0.28 47
IT.MMP1.HGE. 2021-12-07T10:08:45.35 0.3 undecidable manual S 225 0.1583 120 -0.04 75
IV.CESX.HHE. 2021-12-07T10:08:45.38 1.0 undecidable manual P 317 0.3372 50 -0.24 23
IV.GAVE.EHZ. 2021-12-07T10:08:45.63 0.1 undecidable manual P 359 0.3301 50 0.13 95
IV.LNSS.HHZ. 2021-12-07T10:08:44.33 0.1 undecidable manual P 23 0.2626 50 -0.01 99
IV.RM33.HNN. 2021-12-07T10:08:44.50 0.1 undecidable manual P 58 0.2752 50 -0.05 97
IV.ARRO.EHZ. 2021-12-07T10:08:43.87 0.3 undecidable manual P 336 0.2383 50 -0.06 74
IT.MMP1.HGE. 2021-12-07T10:08:42.56 0.1 undecidable manual P 225 0.1583 120 0.16 98
IV.FIAM.HHZ. 2021-12-07T10:08:42.96 0.1 undecidable manual P 120 0.1862 116 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.3 0.00010535 0.78 AML other m 2021-12-07T10:08:49.19
IV.LNSS.HHE. ML:1.4 0.00011700000000000001 0.14 AML other m 2021-12-07T10:08:49.52
IV.FIAM.HHN. ML:0.8 0.00004377116 0.16 AML other m 2021-12-07T10:08:46.58
IV.FIAM.HHE. ML:0.8 0.000046466 0.0768 AML other m 2021-12-07T10:08:46.45
IV.GAVE.EHN. ML:1.2 0.000060122085000000004 0.16 AML other m 2021-12-07T10:08:52.67
IV.GAVE.EHE. ML:1.3 0.00007415981 0.256 AML other m 2021-12-07T10:08:50.85
IV.NRCA.HHE. ML:1.3 0.000049182135 0.16 AML other m 2021-12-07T10:08:56.55
IV.NRCA.HHN. ML:1.2 0.000033657595 0.1216 AML other m 2021-12-07T10:08:57.79
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download