Earthquake with magnitude of Md 2.0 on date 17-05-1991 and time 21:24:59 (Italy) in region 2 km NE Borgo Pace (PU)

A magnitude Md 2.0 earthquake occured in region: 2 km NE Borgo Pace (PU), on

  • 17-05-1991 19:24:59 (UTC)
  • 17-05-1991 21:24:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6740, 12.3150 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
Borgo Pace PU 2 606 606
Mercatello sul Metauro PU 3 1378 1984
Sestino AR 4 1355 3339
Belforte all'Isauro PU 7 769 4108
Sant'Angelo in Vado PU 8 4133 8241
Piandimeleto PU 10 2167 10408
Badia Tedalda AR 11 1087 11495
Frontino PU 11 293 11788
Lunano PU 12 1527 13315
Carpegna PU 12 1674 14989
Peglio PU 15 696 15685
Apecchio PU 15 1882 17567
Pietrarubbia PU 15 660 18227
Pennabilli RN 17 2869 21096
Urbania PU 17 7099 28195
San Giustino PG 18 11297 39492
Macerata Feltria PU 18 1990 41482
Sansepolcro AR 18 15884 57366
Casteldelci RN 18 407 57773
Piobbico PU 18 2029 59802
Sassocorvaro PU 19 3504 63306
Montecopiolo PU 19 1128 64434

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NE of Arezzo (99543 inhabitants)
48 Km SW of Rimini (147750 inhabitants)
52 Km S of Cesena (96758 inhabitants)
55 Km W of Pesaro (94582 inhabitants)
60 Km W of Fano (60888 inhabitants)
63 Km N of Perugia (166134 inhabitants)
65 Km SE of Forlì (117913 inhabitants)
76 Km SE of Faenza (58541 inhabitants)
83 Km S of Ravenna (159116 inhabitants)
86 Km E of Firenze (382808 inhabitants)
86 Km NW of Foligno (57155 inhabitants)
89 Km E of Siena (53903 inhabitants)
90 Km SE of Imola (69797 inhabitants)
92 Km E of Scandicci (50609 inhabitants)
97 Km W 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
Bulletin
Rev1000
Md 2.0 1991-05-17
19:24:59
43.674 12.315 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 141359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-05-17 19:24:59 ± 0.323
Latitude 43.6740 ± 0.0266
Longitude 12.3150 ± 0.0251
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 141359

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) 3584.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
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) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00591
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 141359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:11:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ASS.Z. 1991-05-17T19:25:22.11 10.0 undecidable manual SG 157 0.6549 -0.6 0.6
--.ARV.Z. 1991-05-17T19:25:18.67 10.0 undecidable manual SG 110 0.4884 1.45 0.2
--.SFI.Z. 1991-05-17T19:25:14.89 10.0 undecidable manual SG 304 0.3996 0.21 0.9
--.ASS.Z. 1991-05-17T19:25:12.40 10.0 undecidable manual PG 157 0.6549 -0.57 1.4
--.CRE.Z. 1991-05-17T19:25:10.70 10.0 undecidable manual SG 258 0.2553 -0.15 0.9
--.ARV.Z. 1991-05-17T19:25:09.44 10.0 undecidable manual PG 110 0.4884 -0.36 2
--.SFI.Z. 1991-05-17T19:25:07.49 10.0 undecidable manual PG 304 0.3996 -0.84 1.3
--.CRE.Z. 1991-05-17T19:25:06.83 10.0 undecidable manual PG 258 0.2553 1.08 0.9
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