Earthquake with magnitude of Md 2.4 on date 09-05-1993 and time 19:45:11 (Italy) in region 5 km SW Norcia (PG)

A magnitude Md 2.4 earthquake occured in region: 5 km SW Norcia (PG), on

  • 09-05-1993 17:45:11 (UTC)
  • 09-05-1993 19:45:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7490, 13.0730 at 4 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
Norcia PG 5 4957 4957
Cascia PG 6 3217 8174
Poggiodomo PG 12 117 8291
Monteleone di Spoleto PG 15 599 8890
Preci PG 15 724 9614
Cerreto di Spoleto PG 15 1075 10689
Accumoli RI 16 667 11356
Cittareale RI 16 482 11838
Vallo di Nera PG 17 364 12202
Castelsantangelo sul Nera MC 18 281 12483
Arquata del Tronto AP 19 1178 13661
Sant'Anatolia di Narco PG 19 564 14225
Sellano PG 20 1079 15304

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
53 Km W of Teramo (54892 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
99 Km W of Pescara (121014 inhabitants)
100 Km W of Chieti (51815 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
1993-05-09
17:45:11
42.749 13.073 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 184779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-05-09 17:45:11 ± 0.096
Latitude 42.7490 ± 0.0040
Longitude 13.0730 ± 0.0095
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 184779

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) 891.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00389
Epicentral distance of station farthest from the epicenter (degree) 0.01052
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 184779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:53:27

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 184779
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
--.ARV.Z. 1993-05-09T17:45:39.50 10.0 undecidable manual SG 352 0.7437 -0.26 0.2
--.SDI.Z. 1993-05-09T17:45:35.33 10.0 undecidable manual PN 151 1.1655 0.21 0.5
--.AQU.Z. 1993-05-09T17:45:30.15 10.0 undecidable manual SG 148 0.4551 0.28 0.2
--.MNS.Z. 1993-05-09T17:45:30.70 10.0 undecidable manual SG 218 0.4551 0.14 0.5
--.ASS.Z. 1993-05-09T17:45:29.15 10.0 undecidable manual SG 315 0.4329 0.22 0.3
--.ARV.Z. 1993-05-09T17:45:27.64 10.0 undecidable manual PG 352 0.7437 -0.11 1.2
--.AQU.Z. 1993-05-09T17:45:22.15 10.0 undecidable manual PG 148 0.4551 -0.16 1.1
--.MNS.Z. 1993-05-09T17:45:22.17 10.0 positive manual PG 218 0.4551 -0.16 2.1
--.ASS.Z. 1993-05-09T17:45:21.84 10.0 negative manual PG 315 0.4329 0.08 3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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