Earthquake with magnitude of Md 1.9 on date 08-12-1989 and time 06:16:02 (Italy) in region 7 km SE Valtopina (PG)

A magnitude Md 1.9 earthquake occured in region: 7 km SE Valtopina (PG), on

  • 08-12-1989 05:16:02 (UTC)
  • 08-12-1989 06:16:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0190, 12.8280 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
Valtopina PG 8 1398 1398
Nocera Umbra PG 11 5839 7237
Serravalle di Chienti MC 12 1070 8307
Foligno PG 12 57155 65462
Spello PG 13 8645 74107
Monte Cavallo MC 14 145 74252
Sellano PG 17 1079 75331
Trevi PG 17 8469 83800
Sefro MC 17 422 84222
Assisi PG 18 28299 112521
Pieve Torina MC 18 1458 113979
Muccia MC 19 915 114894
Montefalco PG 20 5679 120573

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
53 Km N of Terni (111501 inhabitants)
82 Km W of Teramo (54892 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
93 Km S of Fano (60888 inhabitants)
99 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
Bulletin
Rev1000
Md 1.9
ML-VAX 1.9
1989-12-08
05:16:02
43.019 12.828 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 105739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-12-08 05:16:02 ± 0.056
Latitude 43.0190 ± 0.0032
Longitude 12.8280 ± 0.0046
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 105739

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) 511.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00575
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 105739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:38:30

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 105739
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(km) Takeoff_angle Residual Weight
--.MNS.Z. 1989-12-08T05:16:25.25 10.0 undecidable manual SG 189 0.6327 -0.08 0.5
--.ARV.Z. 1989-12-08T05:16:20.33 10.0 undecidable manual SG 9 0.4884 0 0.7
--.MNS.Z. 1989-12-08T05:16:15.74 10.0 negative manual PG 189 0.6327 -0.06 2.5
--.CM8.Z. 1989-12-08T05:16:14.50 10.0 undecidable manual SG 52 0.2886 0.05 1.2
--.RM8.Z. 1989-12-08T05:16:14.14 10.0 undecidable manual SG 102 0.2775 0.26 0.4
--.ARV.Z. 1989-12-08T05:16:12.68 10.0 undecidable manual PG 9 0.4884 -0.23 0.6
--.ASS.Z. 1989-12-08T05:16:09.30 10.0 undecidable manual SG 288 0.1332 -0.01 0.8
--.CM8.Z. 1989-12-08T05:16:09.70 10.0 undecidable manual PG 52 0.2886 -0.19 1
--.RM8.Z. 1989-12-08T05:16:09.20 10.0 undecidable manual PG 102 0.2775 0.01 2
--.ASS.Z. 1989-12-08T05:16:06.72 10.0 undecidable manual PG 288 0.1332 0.32 0.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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