Earthquake with magnitude of Md 2.4 on date 14-12-1993 and time 08:15:26 (Italy) in region 4 km W Vallo di Nera (PG)

A magnitude Md 2.4 earthquake occured in region: 4 km W Vallo di Nera (PG), on

  • 14-12-1993 07:15:26 (UTC)
  • 14-12-1993 08:15:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.78, 12.813 at 2 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
Vallo di Nera PG 4 364 364
Campello sul Clitunno PG 5 2442 2806
Sant'Anatolia di Narco PG 6 564 3370
Scheggino PG 8 461 3831
Spoleto PG 8 38218 42049
Cerreto di Spoleto PG 10 1075 43124
Trevi PG 12 8469 51593
Castel Ritaldi PG 12 3278 54871
Poggiodomo PG 13 117 54988
Sellano PG 15 1079 56067
Ferentillo TR 18 1913 57980
Cascia PG 18 3217 61197
Montefalco PG 18 5679 66876
Monteleone di Spoleto PG 18 599 67475

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
28 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
71 Km NE of Viterbo (67173 inhabitants)
74 Km W of Teramo (54892 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 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 2.4
ML-VAX 1.7
1993-12-14
07:15:26
42.78 12.813 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 201939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-12-14 07:15:26 ± 0.204
Latitude 42.7800 ± 0.0057
Longitude 12.8130 ± 0.0343
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 201939

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) 2866.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.00939
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 201939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:09:52

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 201939
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 Takeoff_angle Residual Weight
--.ARV.Z. 1993-12-14T07:15:52.97 10.0 undecidable manual SG 7 0.0065 -0.37 0.1
--.CRE.Z. 1993-12-14T07:15:48.23 10.0 undecidable manual PG 323 0.0094 0.14 0.9
--.ARV.Z. 1993-12-14T07:15:42.18 10.0 undecidable manual PG 7 0.0065 0.09 1.3
--.MNS.Z. 1993-12-14T07:15:42.90 10.0 undecidable manual SG 193 0.0036 -0.34 0.1
--.ASS.Z. 1993-12-14T07:15:38.12 10.0 undecidable manual SG 337 0.0027 -0.4 0.1
--.MNS.Z. 1993-12-14T07:15:35.86 10.0 undecidable manual PG 193 0.0036 0.07 1.5
--.ASS.Z. 1993-12-14T07:15:33.61 10.0 positive manual PG 337 0.0027 0.08 3
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