Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 08-12-1993 and time 01:13:04 (UTC) in region 3 km W Stimigliano (RI)

A magnitude Md 2.3 earthquake occured in region: 3 km W Stimigliano (RI), on

  • 08-12-1993 01:13:04 (UTC)
  • 08-12-1993 02:13:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.2890, 12.5370 at 18 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.

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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
Stimigliano RI 3 2328 2328
Ponzano Romano RM 4 1155 3483
Forano RI 5 3179 6662
Collevecchio RI 5 1577 8239
Sant'Oreste RM 6 3687 11926
Filacciano RM 6 477 12403
Selci RI 8 1106 13509
Nazzano RM 8 1436 14945
Torrita Tiberina RM 9 1089 16034
Tarano RI 9 1444 17478
Magliano Sabina RI 9 3774 21252
Cantalupo in Sabina RI 9 1685 22937
Rignano Flaminio RM 10 10277 33214
Montebuono RI 10 883 34097
Civita Castellana VT 10 16491 50588
Faleria VT 10 2179 52767
Civitella San Paolo RM 11 2066 54833
Torri in Sabina RI 11 1256 56089
Calcata VT 12 918 57007
Poggio Mirteto RI 12 6315 63322
Casperia RI 12 1246 64568
Calvi dell'Umbria TR 13 1856 66424
Poggio Catino RI 13 1341 67765
Roccantica RI 13 563 68328
Fiano Romano RM 14 15360 83688
Vacone RI 14 256 83944
Montopoli di Sabina RI 14 4210 88154
Gallese VT 14 2849 91003
Castel Sant'Elia VT 15 2683 93686
Mazzano Romano RM 15 3165 96851
Otricoli TR 16 1869 98720
Montasola RI 16 395 99115
Corchiano VT 16 3869 102984
Nepi VT 16 9687 112671
Morlupo RM 16 8696 121367
Capena RM 16 10592 131959
Magliano Romano RM 16 1448 133407
Configni RI 17 633 134040
Salisano RI 18 567 134607
Cottanello RI 18 563 135170
Castelnuovo di Farfa RI 18 1059 136229
Fara in Sabina RI 18 13742 149971
Castelnuovo di Porto RM 18 8630 158601
Mompeo RI 18 530 159131
Toffia RI 20 1058 160189

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km S of Terni (111501 inhabitants)
36 Km NW of Guidonia Montecelio (88673 inhabitants)
38 Km E of Viterbo (67173 inhabitants)
42 Km NW of Tivoli (56533 inhabitants)
44 Km N of Roma (2864731 inhabitants)
63 Km NE of Fiumicino (78395 inhabitants)
65 Km E of Civitavecchia (52991 inhabitants)
69 Km N of Pomezia (62966 inhabitants)
70 Km N of Velletri (53303 inhabitants)
71 Km W of L'Aquila (69753 inhabitants)
76 Km S of Foligno (57155 inhabitants)
78 Km N of Aprilia (73446 inhabitants)
92 Km S of Perugia (166134 inhabitants)
94 Km N of Anzio (54211 inhabitants)
96 Km NW of Latina (125985 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
Bulletin
Rev1000 		Md 2.3
ML-VAX 1.5 		1993-12-08
01:13:04		 42.289 12.537 18 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 201609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-12-08 01:13:04 ± 0.433
Latitude 42.2890 ± 0.0152
Longitude 12.5370 ± 0.0675
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 201609

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 5803.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 200
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00996
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 201609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:09:33

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 201609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SDI.Z. 1993-12-08T01:13:38.83 10.0 undecidable manual SN 121 1.11 -0.8 0.1
--.ASS.Z. 1993-12-08T01:13:31.18 10.0 undecidable manual SG 6 0.777 -0.14 0.6
--.SDI.Z. 1993-12-08T01:13:25.36 10.0 undecidable manual PN 121 1.11 0.65 0.5
--.RDP.Z. 1993-12-08T01:13:24.51 10.0 undecidable manual SG 165 0.5439 0.51 0.4
--.ASS.Z. 1993-12-08T01:13:19.75 10.0 negative manual PG 6 0.777 -0.16 2.9
--.RDP.Z. 1993-12-08T01:13:14.94 10.0 undecidable manual PG 165 0.5439 -0.74 0.5
--.MNS.Z. 1993-12-08T01:13:11.31 10.0 undecidable manual SG 48 0.1332 -0.69 0.3
--.MNS.Z. 1993-12-08T01:13:09.11 10.0 negative manual PG 48 0.1332 0.35 2.6
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