Earthquake with magnitude of Md 2.6 on date 05-01-1985 and time 09:32:41 (Italy) in region 3 km NW Fiastra (MC)

A magnitude Md 2.6 earthquake occured in region: 3 km NW Fiastra (MC), on

  • 05-01-1985 08:32:41 (UTC)
  • 05-01-1985 09:32:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.06, 13.14 at 3 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
Fiastra MC 3 559 559
Acquacanina MC 4 121 680
Pievebovigliana MC 4 866 1546
Fiordimonte MC 4 202 1748
Pieve Torina MC 7 1458 3206
Muccia MC 8 915 4121
Bolognola MC 10 142 4263
Camerino MC 11 6974 11237
Cessapalombo MC 12 512 11749
Caldarola MC 12 1823 13572
Ussita MC 12 444 14016
Monte Cavallo MC 13 145 14161
Camporotondo di Fiastrone MC 13 563 14724
Sarnano MC 13 3264 17988
Serrapetrona MC 14 966 18954
Visso MC 14 1107 20061
Belforte del Chienti MC 15 1886 21947
Serravalle di Chienti MC 15 1070 23017
San Ginesio MC 16 3498 26515
Gualdo MC 16 815 27330
Castelsantangelo sul Nera MC 18 281 27611
Sefro MC 18 422 28033
Castelraimondo MC 18 4587 32620
Pioraco MC 19 1134 33754
Amandola FM 20 3629 37383
San Severino Marche MC 20 12726 50109

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
61 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
68 Km NE of Terni (111501 inhabitants)
70 Km SW of Ancona (100861 inhabitants)
81 Km N of L'Aquila (69753 inhabitants)
88 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 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 2.6
ML-VAX 2.1
1985-01-05
08:32:41
43.06 13.14 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 69
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-05 08:32:41 ± 0.226
Latitude 43.06 ± 0.01
Longitude 13.14 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 69

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) 1610.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.02849
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 69
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:24

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 69
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
--.CTI.Z. 1985-01-05T08:33:33.50 10.0 undecidable manual PN 340 0.0285 0.87 0.1
--.MNS.Z. 1985-01-05T08:33:09.00 10.0 undecidable manual SG 206 0.0067 -0.28 0.7
--.CRE.Z. 1985-01-05T08:33:02.80 10.0 undecidable manual PG 303 0.0092 -0.11 1.3
--.PO9.Z. 1985-01-05T08:33:01.80 10.0 undecidable manual SG 196 0.0045 0.52 0.4
--.MNS.Z. 1985-01-05T08:32:57.20 10.0 undecidable manual PG 206 0.0067 -0.51 0.7
--.AQU.Z. 1985-01-05T08:32:57.00 10.0 undecidable manual PG 164 0.0065 -0.29 1.1
--.ASS.Z. 1985-01-05T08:32:55.50 10.0 undecidable manual SG 270 0.0032 -0.12 0.9
--.PO9.Z. 1985-01-05T08:32:53.40 10.0 undecidable manual PG 196 0.0045 0.31 1.1
--.ARV.Z. 1985-01-05T08:32:52.00 10.0 positive manual PG 341 0.0041 -0.25 2.4
--.ASS.Z. 1985-01-05T08:32:50.00 10.0 undecidable manual PG 270 0.0032 0.18 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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