Earthquake with magnitude of Md 2.1 on date 13-04-1985 and time 15:00:39 (Italy) in region 3 km E Fabriano (AN)

A magnitude Md 2.1 earthquake occured in region: 3 km E Fabriano (AN), on

  • 13-04-1985 13:00:39 (UTC)
  • 13-04-1985 15:00:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.34, 12.94 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
Fabriano AN 3 31480 31480
Cerreto d'Esi AN 5 3817 35297
Genga AN 10 1797 37094
Esanatoglia MC 10 2034 39128
Matelica MC 11 9981 49109
Poggio San Vicino MC 12 246 49355
Sassoferrato AN 12 7285 56640
Serra San Quirico AN 13 2850 59490
Fossato di Vico PG 15 2840 62330
Gagliole MC 16 620 62950
Sigillo PG 16 2404 65354
Mergo AN 17 1037 66391
Apiro MC 17 2280 68671
Fiuminata MC 17 1402 70073
Gualdo Tadino PG 17 15208 85281
Castelraimondo MC 18 4587 89868
Arcevia AN 18 4612 94480
Costacciaro PG 18 1216 95696
Pioraco MC 19 1134 96830
Cupramontana AN 19 4756 101586
Rosora AN 19 1985 103571

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Foligno (57155 inhabitants)
52 Km NE of Perugia (166134 inhabitants)
56 Km SW of Ancona (100861 inhabitants)
56 Km S of Fano (60888 inhabitants)
63 Km S of Pesaro (94582 inhabitants)
85 Km SE of Rimini (147750 inhabitants)
86 Km E of Arezzo (99543 inhabitants)
90 Km N of Terni (111501 inhabitants)
98 Km NW of Teramo (54892 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 2.1 1985-04-13
13:00:39
43.34 12.94 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4589
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-13 13:00:39 ± 0.38
Latitude 43.34 ± 0.02
Longitude 12.94 ± 0.07
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4589

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) 5772.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.00874
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 4589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-04-13T13:01:13.00 10.0 undecidable manual SG 191 0.0087 0.54 0.5
--.PO9.Z. 1985-04-13T13:01:06.50 10.0 undecidable manual SG 179 0.0069 0.71 0.4
--.MNS.Z. 1985-04-13T13:00:57.00 10.0 undecidable manual PG 191 0.0087 -1.42 0.5
--.PO9.Z. 1985-04-13T13:00:54.50 10.0 undecidable manual PG 179 0.0069 -0.07 2
--.AS1.Z. 1985-04-13T13:00:53.00 10.0 undecidable manual SG 216 0.0031 0.65 0.7
--.AS1.Z. 1985-04-13T13:00:46.50 10.0 undecidable manual PG 216 0.0031 -0.3 2.3
--.AR1.Z. 1985-04-13T13:00:45.00 10.0 undecidable manual SG 1 0.0014 -1.16 0.4
--.AR1.Z. 1985-04-13T13:00:44.00 10.0 undecidable manual PG 1 0.0014 0.77 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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