Earthquake with magnitude of Md 3.0 on date 23-10-1993 and time 22:35:55 (Italy) in region 4 km E Arquata del Tronto (AP)

A magnitude Md 3.0 earthquake occured in region: 4 km E Arquata del Tronto (AP), on

  • 23-10-1993 21:35:55 (UTC)
  • 23-10-1993 22:35:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.34 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
Arquata del Tronto AP 4 1178 1178
Montegallo AP 6 523 1701
Acquasanta Terme AP 6 2916 4617
Montemonaco AP 12 604 5221
Accumoli RI 13 667 5888
Roccafluvione AP 14 2010 7898
Valle Castellana TE 14 977 8875
Palmiano AP 16 196 9071
Venarotta AP 16 2066 11137
Montefortino FM 17 1178 12315
Amatrice RI 18 2657 14972
Rocca Santa Maria TE 19 537 15509
Castelsantangelo sul Nera MC 19 281 15790
Comunanza AP 20 3166 18956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Teramo (54892 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
55 Km E of Foligno (57155 inhabitants)
62 Km E of Terni (111501 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
80 Km W of Pescara (121014 inhabitants)
83 Km NW of Chieti (51815 inhabitants)
85 Km E of Perugia (166134 inhabitants)
93 Km S of Ancona (100861 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 2.4
1993-10-23
21:35:55
42.79 13.34 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 198799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-10-23 21:35:55 ± 0.272
Latitude 42.79 ± 0.02
Longitude 13.34 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 198799

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) 3063.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00389
Epicentral distance of station farthest from the epicenter (degree) 0.02121
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 198799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:06:49

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 198799
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
--.FG2.Z. 1993-10-23T21:36:45.70 10.0 undecidable manual SN 125 0.015 0.27 0.5
--.CRE.Z. 1993-10-23T21:36:37.79 10.0 undecidable manual SN 309 0.0117 0.88 0.4
--.RSM.Z. 1993-10-23T21:36:37.80 10.0 undecidable manual SN 330 0.0117 0.16 0.6
--.SDI.Z. 1993-10-23T21:36:33.14 10.0 undecidable manual SN 162 0.0102 0.38 0.6
--.PII.Z. 1993-10-23T21:36:33.28 10.0 undecidable manual PN 295 0.0202 1.02 0.7
--.BDI.Z. 1993-10-23T21:36:33.81 10.0 undecidable manual PN 303 0.0212 0.02 1.1
--.SFI.Z. 1993-10-23T21:36:24.68 10.0 undecidable manual PN 316 0.0139 1.98 0.2
--.FG2.Z. 1993-10-23T21:36:23.57 10.0 undecidable manual PN 125 0.015 -0.67 1.1
--.ARV.Z. 1993-10-23T21:36:21.94 10.0 undecidable manual SG 337 0.0069 0.15 0.7
--.RSM.Z. 1993-10-23T21:36:20.71 10.0 undecidable manual PN 330 0.0117 1.38 0.6
--.MNS.Z. 1993-10-23T21:36:18.61 10.0 undecidable manual SG 230 0.0057 1.09 0.4
--.CRE.Z. 1993-10-23T21:36:18.82 10.0 undecidable manual PN 309 0.0117 -0.51 1.4
--.SDI.Z. 1993-10-23T21:36:17.73 10.0 undecidable manual PN 162 0.0102 0.8 1.2
--.RMP.Z. 1993-10-23T21:36:16.73 10.0 undecidable manual PN 206 0.0097 0.46 1.5
--.ASS.Z. 1993-10-23T21:36:15.13 10.0 undecidable manual SG 298 0.0051 -0.47 0.6
--.AQU.Z. 1993-10-23T21:36:09.96 10.0 undecidable manual SG 174 0.0039 -1.32 0.3
--.ARV.Z. 1993-10-23T21:36:09.12 10.0 positive manual PG 337 0.0069 -1.48 1
--.MNS.Z. 1993-10-23T21:36:07.71 10.0 positive manual PG 230 0.0057 -0.41 3.1
--.ASS.Z. 1993-10-23T21:36:06.23 10.0 positive manual PG 298 0.0051 -0.8 2.4
--.AQU.Z. 1993-10-23T21:36:03.99 10.0 undecidable manual PG 174 0.0039 -0.53 1.5
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