Earthquake with magnitude of Md 2.8 on date 25-05-1991 and time 22:57:30 (Italy) in region Costa Marchigiana Pesarese (Pesaro Urbino)

A magnitude Md 2.8 earthquake occured in region: Costa Marchigiana Pesarese (Pesaro Urbino), on

  • 25-05-1991 20:57:30 (UTC)
  • 25-05-1991 22:57:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9, 13.14 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
Fano PU 11 60888 60888
San Costanzo PU 16 4786 65674
Mondolfo PU 17 14277 79951
Pesaro PU 18 94582 174533

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Fano (60888 inhabitants)
18 Km E of Pesaro (94582 inhabitants)
44 Km NW of Ancona (100861 inhabitants)
49 Km E of Rimini (147750 inhabitants)
76 Km E of Cesena (96758 inhabitants)
94 Km SE of Ravenna (159116 inhabitants)
95 Km E of Forlì (117913 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 2.8
M 3.0
1991-05-25
20:57:30
43.9 13.14 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 141849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-05-25 20:57:30 ± 0.275
Latitude 43.90 ± 0.02
Longitude 13.14 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 141849

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) 2691
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.02857
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 141849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:12:25

M:3

Field Value
Value 3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 141849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:44:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FVI.Z. 1991-05-25T20:58:43.89 10.0 undecidable manual SN 354 0.0243 -2.52 0
--.CTI.Z. 1991-05-25T20:58:38.00 10.0 undecidable manual SN 334 0.0215 -0.94 0.3
--.BDI.Z. 1991-05-25T20:58:27.41 10.0 undecidable manual SN 275 0.0164 1.73 0.1
--.PII.Z. 1991-05-25T20:58:27.41 10.0 undecidable manual SN 265 0.017 0.34 0.6
--.TRI.Z. 1991-05-25T20:58:25.87 10.0 undecidable manual SN 13 0.0168 -0.53 0.6
--.MME.Z. 1991-05-25T20:58:25.50 10.0 undecidable manual SN 280 0.0159 1.23 0.3
--.RIY.Z. 1991-05-25T20:58:23.40 10.0 undecidable manual SN 31 0.0152 1.01 0.6
--.KBA.Z. 1991-05-25T20:58:22.00 10.0 positive manual PN 2 0.0286 1.24 0.9
--.FVI.Z. 1991-05-25T20:58:12.50 10.0 undecidable manual PN 354 0.0243 -1.72 0.2
--.CTI.Z. 1991-05-25T20:58:10.00 10.0 undecidable manual PN 334 0.0215 0.09 1.4
--.PGD.Z. 1991-05-25T20:58:07.94 10.0 undecidable manual SG 269 0.0091 2.12 0
--.ASS.Z. 1991-05-25T20:58:03.14 10.0 undecidable manual SG 202 0.0081 0.95 0.4
--.PII.Z. 1991-05-25T20:58:03.99 10.0 undecidable manual PN 265 0.017 0.94 1
--.CRE.Z. 1991-05-25T20:58:02.82 10.0 undecidable manual SG 252 0.0081 0.84 0.5
--.SFI.Z. 1991-05-25T20:58:02.33 10.0 undecidable manual SG 270 0.0083 -0.55 0.6
--.TRI.Z. 1991-05-25T20:58:02.15 10.0 undecidable manual PN 13 0.0168 -0.52 1.4
--.BDI.Z. 1991-05-25T20:58:02.45 10.0 undecidable manual PN 275 0.0164 0.21 1.6
--.MME.Z. 1991-05-25T20:58:01.50 10.0 undecidable manual PN 280 0.0159 0.06 1.7
--.RIY.Z. 1991-05-25T20:58:00.70 10.0 positive manual PN 31 0.0152 0.35 3.3
--.PGD.Z. 1991-05-25T20:57:50.37 10.0 undecidable manual PG 269 0.0091 -0.41 1.7
--.SR3.Z. 1991-05-25T20:57:49.00 10.0 undecidable manual PG 269 0.0084 -0.27 1.8
--.CRE.Z. 1991-05-25T20:57:48.50 10.0 undecidable manual PG 252 0.0081 -0.52 1.6
--.SFI.Z. 1991-05-25T20:57:48.50 10.0 undecidable manual PG 270 0.0083 -1.04 1
--.ASS.Z. 1991-05-25T20:57:47.96 10.0 undecidable manual PG 202 0.0081 -0.73 1.4
--.ARV.Z. 1991-05-25T20:57:46.54 10.0 undecidable manual SG 199 0.0037 -0.06 0.8
--.ARV.Z. 1991-05-25T20:57:39.24 10.0 undecidable manual PG 199 0.0037 -0.45 1.7
--.PRO.Z. 1991-05-25T20:57:37.00 10.0 undecidable manual SG 276 0.0016 -0.5 0.7
--.PRO.Z. 1991-05-25T20:57:34.00 10.0 undecidable manual PG 276 0.0016 -0.43 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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