Earthquake with magnitude of Md 3.7 on date 02-08-1986 and time 12:44:43 (UTC) in region 4 km SE Pietralunga (PG)

A magnitude Md 3.7 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 02-08-1986 12:44:43 (UTC)
  • 02-08-1986 14:44:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.421, 12.475 at 5 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
Pietralunga PG 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Apecchio PU 16 1882 41527
Umbertide PG 17 16681 58208
Piobbico PU 19 2029 60237
CittĂ  di Castello PG 20 39913 100150
Cagli PU 20 8731 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
55 Km NW of Foligno (57155 inhabitants)
64 Km SW of Fano (60888 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
96 Km SE of Forlì (117913 inhabitants)
97 Km N of Terni (111501 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 3.7 1986-08-02
12:44:43
43.421 12.475 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 31909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-02 12:44:43 ± 0.176
Latitude 43.4210 ± 0.0173
Longitude 12.4750 ± 0.0219
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 31909

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) 2614.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.06961
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitude information

Md:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 31909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:32:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.VAY.Z. 1986-08-02T12:46:37.00 10.0 undecidable manual PN 102 0.0696 0.77 0.6
--.KBN.Z. 1986-08-02T12:46:24.40 10.0 undecidable manual PN 111 0.0609 1.5 0.3
--.TIR.Z. 1986-08-02T12:46:11.50 10.0 undecidable manual PN 108 0.0525 1.45 0.3
--.BRT.Z. 1986-08-02T12:45:50.00 10.0 undecidable manual PN 125 0.0386 1.02 0.7
--.SOO.Z. 1986-08-02T12:45:45.50 10.0 undecidable manual PN 287 0.0361 0.41 1.2
--.ORO.Z. 1986-08-02T12:45:44.50 10.0 undecidable manual PN 306 0.035 1.14 0.6
--.STV.Z. 1986-08-02T12:45:41.40 10.0 undecidable manual PN 284 0.0342 -0.76 1
--.SGO.Z. 1986-08-02T12:45:39.00 10.0 undecidable manual PN 143 0.0319 0.27 1.3
--.IMP.Z. 1986-08-02T12:45:36.00 10.0 undecidable manual PN 280 0.0301 0.04 1.4
--.ROB.Z. 1986-08-02T12:45:35.80 10.0 undecidable manual PN 286 0.0308 -1.28 0.6
--.CKI.Z. 1986-08-02T12:45:34.00 10.0 undecidable manual PN 290 0.0286 0.34 1.4
--.MDI.Z. 1986-08-02T12:45:33.00 10.0 undecidable manual PN 321 0.0276 0.89 0.9
--.RBL.Z. 1986-08-02T12:45:32.00 10.0 undecidable manual PN 14 0.028 -0.76 1.1
--.FIN.Z. 1986-08-02T12:45:32.20 10.0 undecidable manual PN 286 0.0286 -1.38 0.5
--.LJU.Z. 1986-08-02T12:45:31.00 10.0 undecidable manual PN? 28 0.027 -0.16 0.6
--.CTI.Z. 1986-08-02T12:45:28.00 10.0 undecidable manual PN 348 0.0242 1.09 0.8
--.GEN.Z. 1986-08-02T12:45:27.00 10.0 undecidable manual PN 292 0.0245 -0.52 1.3
--.VOY.Z. 1986-08-02T12:45:27.40 10.0 undecidable manual PN 20 0.0251 -0.98 0.9
--.CO9.Z. 1986-08-02T12:45:27.00 10.0 undecidable manual PN 303 0.023 1.93 0.2
--.CEY.Z. 1986-08-02T12:45:26.20 10.0 undecidable manual PN 30 0.0243 -0.87 1
--.SAL.Z. 1986-08-02T12:45:26.00 10.0 undecidable manual PN 328 0.0232 0.46 1.3
--.TRI.Z. 1986-08-02T12:45:22.50 10.0 undecidable manual PN 21 0.0221 -1.31 0.6
--.BVT.Z. 1986-08-02T12:45:19.50 10.0 undecidable manual PN 300 0.0196 -0.46 1.3
--.PS9.Z. 1986-08-02T12:45:09.50 10.0 undecidable manual PN 282 0.013 -0.31 1.4
--.MAO.Z. 1986-08-02T12:45:09.00 10.0 undecidable manual PN 224 0.0125 -0.12 1.5
--.AQU.Z. 1986-08-02T12:45:07.00 10.0 undecidable manual PN 147 0.0113 -0.34 1.4
--.PRO.Z. 1986-08-02T12:44:56.60 10.0 undecidable manual PG 30 0.0052 1.06 0.8
--.ASS.Z. 1986-08-02T12:44:51.00 10.0 negative manual PG 160 0.0034 -0.68 2.3
--.ARV.Z. 1986-08-02T12:44:50.00 10.0 negative manual PG 77 0.0031 -0.97 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download