Earthquake with magnitude of Md 3.1 on date 18-08-1985 and time 14:27:02 (Italy) in region 3 km NE Montegranaro (FM)

A magnitude Md 3.1 earthquake occured in region: 3 km NE Montegranaro (FM), on

  • 18-08-1985 12:27:02 (UTC)
  • 18-08-1985 14:27:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.26, 13.65 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
Montegranaro FM 3 12990 12990
Sant'Elpidio a Mare FM 5 17110 30100
Monte San Giusto MC 5 8191 38291
Montecosaro MC 6 7113 45404
Monte Urano FM 6 8353 53757
Morrovalle MC 8 10195 63952
Civitanova Marche MC 8 41983 105935
Porto Sant'Elpidio FM 9 26152 132087
Torre San Patrizio FM 9 2048 134135
Monte San Pietrangeli FM 9 2458 136593
Corridonia MC 11 15430 152023
Montelupone MC 11 3596 155619
Francavilla d'Ete FM 12 964 156583
Potenza Picena MC 12 15936 172519
Rapagnano FM 12 2145 174664
Fermo FM 13 37655 212319
Magliano di Tenna FM 15 1452 213771
Porto San Giorgio FM 15 16121 229892
Petriolo MC 15 1998 231890
Mogliano MC 16 4696 236586
Macerata MC 16 42473 279059
Montegiorgio FM 17 6851 285910
Grottazzolina FM 17 3398 289308
Ponzano di Fermo FM 18 1674 290982
Recanati MC 18 21349 312331
Massa Fermana FM 19 963 313294
Porto Recanati MC 19 12531 325825
Monte Giberto FM 19 801 326626
Lapedona FM 20 1166 327792
Montappone FM 20 1682 329474

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km S of Ancona (100861 inhabitants)
67 Km N of Teramo (54892 inhabitants)
82 Km SE of Fano (60888 inhabitants)
84 Km E of Foligno (57155 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
93 Km SE of Pesaro (94582 inhabitants)
100 Km NW of Pescara (121014 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 3.1 1985-08-18
12:27:02
43.26 13.65 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-18 12:27:02 ± 0.318
Latitude 43.26 ± 0.02
Longitude 13.65 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12009

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) 3580.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00502
Epicentral distance of station farthest from the epicenter (degree) 0.03044
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 12009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1985-08-18T12:27:55.50 10.0 undecidable manual PN 349 0.0304 0.12 1.2
--.CTI.Z. 1985-08-18T12:27:52.70 10.0 undecidable manual PN 333 0.0281 0.9 0.7
--.RBL.Z. 1985-08-18T12:27:52.50 10.0 undecidable manual PN 358 0.0286 -0.02 1.3
--.PO9.Z. 1985-08-18T12:27:34.00 10.0 undecidable manual SG 216 0.0077 1.64 0.1
--.DUI.Z. 1985-08-18T12:27:32.50 10.0 undecidable manual PN 158 0.0154 0.11 1.8
--.AS1.Z. 1985-08-18T12:27:30.00 10.0 undecidable manual SG 254 0.0067 1.1 0.3
--.SD1.Z. 1985-08-18T12:27:29.50 10.0 undecidable manual PN 175 0.014 -0.78 1.2
--.MNS.Z. 1985-08-18T12:27:23.10 10.0 undecidable manual PN 218 0.0101 -1.27 0.5
--.AR1.Z. 1985-08-18T12:27:22.00 10.0 undecidable manual SG 294 0.005 -0.86 0.4
--.AQU.Z. 1985-08-18T12:27:22.00 10.0 undecidable manual PG 190 0.0083 0.89 1
--.PO9.Z. 1985-08-18T12:27:19.00 10.0 undecidable manual PG 216 0.0077 -0.89 1
--.AS1.Z. 1985-08-18T12:27:17.50 10.0 undecidable manual PG 254 0.0067 -0.39 1.7
--.AR1.Z. 1985-08-18T12:27:14.00 10.0 undecidable manual PG 294 0.005 -0.4 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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