Earthquake with magnitude of Md 3.0 on date 20-10-1993 and time 23:02:24 (Italy) in region 3 km E Trevi (PG)

A magnitude Md 3.0 earthquake occured in region: 3 km E Trevi (PG), on

  • 20-10-1993 22:02:24 (UTC)
  • 20-10-1993 23:02:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.87, 12.79 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
Trevi PG 3 8469 8469
Campello sul Clitunno PG 6 2442 10911
Castel Ritaldi PG 11 3278 14189
Montefalco PG 11 5679 19868
Sellano PG 11 1079 20947
Foligno PG 12 57155 78102
Cerreto di Spoleto PG 12 1075 79177
Vallo di Nera PG 13 364 79541
Sant'Anatolia di Narco PG 16 564 80105
Spoleto PG 16 38218 118323
Bevagna PG 16 5081 123404
Spello PG 16 8645 132049
Giano dell'Umbria PG 18 3846 135895
Scheggino PG 18 461 136356
Gualdo Cattaneo PG 19 6155 142511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of Foligno (57155 inhabitants)
37 Km NE of Terni (111501 inhabitants)
42 Km SE of Perugia (166134 inhabitants)
76 Km NE of Viterbo (67173 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
99 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
Bulletin
Rev1000
Md 3.0
ML-VAX 2.1
1993-10-20
22:02:24
42.87 12.79 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 198609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-10-20 22:02:24 ± 0.171
Latitude 42.87 ± 0.01
Longitude 12.79 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 198609

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) 1919.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.01781
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 198609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:06:39

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 198609
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
--.RDP.Z. 1993-10-20T22:03:03.58 10.0 undecidable manual SN 182 0.01 1.66 0
--.RMP.Z. 1993-10-20T22:03:00.63 10.0 undecidable manual SN 183 0.0096 -0.05 0.5
--.BDI.Z. 1993-10-20T22:02:58.85 10.0 undecidable manual PN 307 0.0178 0.64 0.6
--.CRE.Z. 1993-10-20T22:02:57.00 10.0 undecidable manual SG 320 0.0087 -0.76 0.3
--.PGD.Z. 1993-10-20T22:02:50.90 10.0 undecidable manual PN 322 0.0113 1.75 0
--.SDI.Z. 1993-10-20T22:02:50.00 10.0 undecidable manual PN 146 0.0125 0.01 1.1
--.SSO.Z. 1993-10-20T22:02:49.90 10.0 undecidable manual SG! 47 0.0056 3.12 0
--.AQU.Z. 1993-10-20T22:02:48.81 10.0 undecidable manual SG 138 0.0062 -0.06 0.6
--.SFI.Z. 1993-10-20T22:02:48.57 10.0 undecidable manual PN 326 0.0111 0.64 0.8
--.RSM.Z. 1993-10-20T22:02:47.10 10.0 undecidable manual PN 346 0.0097 1.28 0.2
--.RDP.Z. 1993-10-20T22:02:46.12 10.0 undecidable manual PN 182 0.01 -0.16 1.2
--.ARV.Z. 1993-10-20T22:02:46.88 10.0 undecidable manual SG 9 0.0057 -0.3 0.5
--.RMP.Z. 1993-10-20T22:02:45.21 10.0 undecidable manual PN 183 0.0096 -0.34 1.2
--.CRE.Z. 1993-10-20T22:02:43.10 10.0 undecidable manual PG 320 0.0087 -0.77 0.7
--.MNS.Z. 1993-10-20T22:02:42.11 10.0 undecidable manual SG 189 0.0045 -0.6 0.4
--.SSO.Z. 1993-10-20T22:02:40.00 10.0 undecidable manual PG! 47 0.0056 2.47 0
--.AQU.Z. 1993-10-20T22:02:38.76 10.0 undecidable manual PG 138 0.0062 0.02 1.5
--.ARV.Z. 1993-10-20T22:02:37.22 10.0 positive manual PG 9 0.0057 -0.55 2.2
--.ALP.Z. 1993-10-20T22:02:36.70 10.0 undecidable manual PG 98 0.0052 0.01 3
--.RMF.Z. 1993-10-20T22:02:36.50 10.0 undecidable manual SG 75 0.0028 -0.48 0.7
--.MNS.Z. 1993-10-20T22:02:34.61 10.0 positive manual PG 189 0.0045 -0.58 2.1
--.RMF.Z. 1993-10-20T22:02:32.20 10.0 undecidable manual PG 75 0.0028 0.33 2.7
--.ASS.Z. 1993-10-20T22:02:32.49 10.0 undecidable manual SG 331 0.0019 -1.19 0.1
--.ASS.Z. 1993-10-20T22:02:29.52 10.0 positive manual PG 331 0.0019 -0.45 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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