Earthquake with magnitude of Md 2.3 on date 12-05-1986 and time 17:28:48 (Italy) in region 2 km SW Acquacanina (MC)

A magnitude Md 2.3 earthquake occured in region: 2 km SW Acquacanina (MC), on

  • 12-05-1986 15:28:48 (UTC)
  • 12-05-1986 17:28:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 13.17 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
Acquacanina MC 2 121 121
Fiastra MC 3 559 680
Bolognola MC 5 142 822
Fiordimonte MC 7 202 1024
Ussita MC 8 444 1468
Pievebovigliana MC 9 866 2334
Pieve Torina MC 10 1458 3792
Visso MC 11 1107 4899
Sarnano MC 11 3264 8163
Muccia MC 13 915 9078
Cessapalombo MC 13 512 9590
Castelsantangelo sul Nera MC 13 281 9871
Monte Cavallo MC 14 145 10016
Caldarola MC 15 1823 11839
Gualdo MC 15 815 12654
Camporotondo di Fiastrone MC 16 563 13217
Camerino MC 16 6974 20191
Amandola FM 16 3629 23820
San Ginesio MC 16 3498 27318
Montefortino FM 16 1178 28496
Belforte del Chienti MC 18 1886 30382
Preci PG 18 724 31106
Montemonaco AP 18 604 31710
Serrapetrona MC 18 966 32676
Serravalle di Chienti MC 19 1070 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
64 Km E of Perugia (166134 inhabitants)
66 Km NE of Terni (111501 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
76 Km N of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
98 Km NW of Montesilvano (53738 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
Rev 1000 Md 2.3 1986-05-12
15:28:48
43.01 13.17 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 27229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-12 15:28:48 ± 0.115
Latitude 43.01 ± 0.00
Longitude 13.17 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 27229

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) 894.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 228
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.0034
Epicentral distance of station farthest from the epicenter (degree) 0.00648
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 27229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:28:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-05-12T15:29:07.00 10.0 undecidable manual SG 341 0.0045 0.25 0.1
--.MNS.Z. 1986-05-12T15:29:03.00 10.0 undecidable manual PG 209 0.0065 0.06 1.4
--.ASS.Z. 1986-05-12T15:29:02.50 10.0 undecidable manual SG 277 0.0034 0 0.8
--.ARV.Z. 1986-05-12T15:28:58.90 10.0 undecidable manual PG 341 0.0045 -0.11 1.1
--.ASS.Z. 1986-05-12T15:28:56.50 10.0 undecidable manual PG 277 0.0034 -0.05 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download