Earthquake with magnitude of Md 2.4 on date 09-07-1985 and time 09:16:44 (Italy) in region 1 km NE Foligno (PG)

A magnitude Md 2.4 earthquake occured in region: 1 km NE Foligno (PG), on

  • 09-07-1985 07:16:44 (UTC)
  • 09-07-1985 09:16:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.71 at 9 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
Foligno PG 1 57155 57155
Spello PG 4 8645 65800
Bevagna PG 9 5081 70881
Montefalco PG 9 5679 76560
Trevi PG 10 8469 85029
Cannara PG 11 4305 89334
Valtopina PG 11 1398 90732
Gualdo Cattaneo PG 14 6155 96887
Assisi PG 14 28299 125186
Castel Ritaldi PG 16 3278 128464
Campello sul Clitunno PG 17 2442 130906
Bastia Umbra PG 17 21874 152780
Nocera Umbra PG 18 5839 158619
Giano dell'Umbria PG 18 3846 162465
Bettona PG 19 4367 166832
Sellano PG 20 1079 167911

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km NE of Foligno (57155 inhabitants)
31 Km SE of Perugia (166134 inhabitants)
45 Km N of Terni (111501 inhabitants)
78 Km NE of Viterbo (67173 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
88 Km W of Teramo (54892 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
98 Km SW of Ancona (100861 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 2.4 1985-07-09
07:16:44
42.97 12.71 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 9909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-07-09 07:16:44 ± 0.122
Latitude 42.97 ± 0.02
Longitude 12.71 ± 0.05
Depth (km) 9 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 9909

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) 4551.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00518
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 9909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:13:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-07-09T07:17:05.00 10.0 undecidable manual SG 182 0.0052 -0.18 0.3
--.CM2.Z. 1985-07-09T07:16:59.40 10.0 undecidable manual SG 54 0.0035 0.36 0.3
--.MNS.Z. 1985-07-09T07:16:56.50 10.0 undecidable manual PG 182 0.0052 0.11 1
--.PO9.Z. 1985-07-09T07:16:53.50 10.0 undecidable manual PG 156 0.0038 -0.04 1.4
--.CM2.Z. 1985-07-09T07:16:52.60 10.0 positive manual PG 54 0.0035 -0.25 1.7
--.AS1.Z. 1985-07-09T07:16:49.00 10.0 undecidable manual SG 336 0.0009 -0.45 0.1
--.AS1.Z. 1985-07-09T07:16:47.50 10.0 positive manual PG 336 0.0009 0.19 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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