Earthquake with magnitude of Md 2.3 on date 03-05-1985 and time 19:13:03 (Italy) in region 4 km NW Urbisaglia (MC)

A magnitude Md 2.3 earthquake occured in region: 4 km NW Urbisaglia (MC), on

  • 03-05-1985 17:13:03 (UTC)
  • 03-05-1985 19:13:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.22, 13.34 at 20 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
Urbisaglia MC 4 2628 2628
Tolentino MC 4 20069 22697
Pollenza MC 6 6618 29315
Colmurano MC 6 1263 30578
Loro Piceno MC 9 2401 32979
Ripe San Ginesio MC 9 852 33831
Belforte del Chienti MC 10 1886 35717
Petriolo MC 10 1998 37715
Treia MC 10 9403 47118
Camporotondo di Fiastrone MC 11 563 47681
Mogliano MC 12 4696 52377
San Ginesio MC 13 3498 55875
Caldarola MC 13 1823 57698
Serrapetrona MC 13 966 58664
Macerata MC 13 42473 101137
San Severino Marche MC 13 12726 113863
Massa Fermana FM 14 963 114826
Cessapalombo MC 14 512 115338
Sant'Angelo in Pontano MC 14 1436 116774
Montappone FM 14 1682 118456
Corridonia MC 14 15430 133886
Monte Vidon Corrado FM 16 731 134617
Appignano MC 16 4213 138830
Falerone FM 17 3337 142167
Francavilla d'Ete FM 17 964 143131
Gualdo MC 17 815 143946
Montecassiano MC 18 7125 151071
Montegiorgio FM 19 6851 157922
Penna San Giovanni MC 19 1108 159030
Cingoli MC 20 10352 169382
Monte San Pietrangeli FM 20 2458 171840
Servigliano FM 20 2336 174176

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Ancona (100861 inhabitants)
59 Km NE of Foligno (57155 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
74 Km SE of Fano (60888 inhabitants)
78 Km E of Perugia (166134 inhabitants)
84 Km SE of Pesaro (94582 inhabitants)
92 Km NE of Terni (111501 inhabitants)
97 Km N of L'Aquila (69753 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 2.3 1985-05-03
17:13:03
43.22 13.34 20 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 5809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-03 17:13:03 ± 0.589
Latitude 43.22 ± 0.04
Longitude 13.34 ± 0.05
Depth (km) 20 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5809

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) 5535.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 260
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) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.00866
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 5809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PO9.Z. 1985-05-03T17:13:28.50 10.0 undecidable manual SG 204 0.0063 0.53 0.1
--.MNS.Z. 1985-05-03T17:13:21.50 10.0 undecidable manual PN? 210 0.0087 0.14 0.2
--.ALP.Z. 1985-05-03T17:13:20.70 10.0 undecidable manual SG 158 0.0042 0.2 0.7
--.PO9.Z. 1985-05-03T17:13:16.50 10.0 undecidable manual PG 204 0.0063 -0.98 0.1
--.ALP.Z. 1985-05-03T17:13:13.10 10.0 undecidable manual PG 158 0.0042 -0.07 2.7
--.CM2.Z. 1985-05-03T17:13:11.00 10.0 undecidable manual SG 258 0.0013 -0.19 0.7
--.CM2.Z. 1985-05-03T17:13:07.90 10.0 positive manual PG 258 0.0013 0.11 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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