Earthquake with magnitude of Md 2.4 on date 05-07-1991 and time 05:13:03 (Italy) in region 1 km SW Senigallia (AN)

A magnitude Md 2.4 earthquake occured in region: 1 km SW Senigallia (AN), on

  • 05-07-1991 03:13:03 (UTC)
  • 05-07-1991 05:13:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.71, 13.21 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
Senigallia AN 1 45027 45027
Trecastelli AN 9 7625 52652
Mondolfo PU 10 14277 66929
Montemarciano AN 11 9992 76921
Ostra AN 12 6875 83796
Morro d'Alba AN 12 1903 85699
San Costanzo PU 13 4786 90485
Monte San Vito AN 13 6848 97333
Monte Porzio PU 13 2836 100169
Corinaldo AN 15 4998 105167
San Marcello AN 15 2057 107224
Belvedere Ostrense AN 15 2234 109458
Chiaravalle AN 15 14796 124254
Monsano AN 17 3405 127659
Ostra Vetere AN 17 3311 130970
Falconara Marittima AN 18 26565 157535
San Giorgio di Pesaro PU 19 1388 158923
Camerata Picena AN 19 2567 161490
Piagge PU 20 1022 162512
Mondavio PU 20 3810 166322

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SE of Fano (60888 inhabitants)
27 Km W of Ancona (100861 inhabitants)
33 Km SE of Pesaro (94582 inhabitants)
65 Km SE of Rimini (147750 inhabitants)
91 Km SE of Cesena (96758 inhabitants)
93 Km NE of Foligno (57155 inhabitants)
94 Km NE of Perugia (166134 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 1991-07-05
03:13:03
43.71 13.21 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 144689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-07-05 03:13:03 ± 0.406
Latitude 43.71 ± 0.02
Longitude 13.21 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 144689

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) 2706.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 257
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.0068
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 144689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:15:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1991-07-05T03:13:30.46 10.0 undecidable manual SG 212 0.0068 0.35 0.4
--.CIO.Z. 1991-07-05T03:13:21.86 10.0 undecidable manual SG 185 0.0046 -0.34 0.5
--.ASS.Z. 1991-07-05T03:13:19.53 10.0 undecidable manual PG 212 0.0068 0.59 0.4
--.AOI.Z. 1991-07-05T03:13:16.70 10.0 undecidable manual SG 119 0.0029 0.02 0.9
--.CIO.Z. 1991-07-05T03:13:14.39 10.0 undecidable manual PG 185 0.0046 0.02 2.1
--.ARV.Z. 1991-07-05T03:13:14.57 10.0 undecidable manual SG 222 0.0025 -0.2 0.7
--.AOI.Z. 1991-07-05T03:13:10.79 10.0 undecidable manual PG 119 0.0029 -0.03 2.2
--.ARV.Z. 1991-07-05T03:13:09.57 10.0 undecidable manual PG 222 0.0025 -0.51 0.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download