Earthquake with magnitude of Md 2.3 on date 20-09-1985 and time 14:27:11 (Italy) in region NW Monte Vidon Combatte (FM)

A magnitude Md 2.3 earthquake occured in region: NW Monte Vidon Combatte (FM), on

  • 20-09-1985 12:27:11 (UTC)
  • 20-09-1985 14:27:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0510, 13.6310 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
Monte Vidon Combatte FM 0 433 433
Petritoli FM 3 2335 2768
Ortezzano FM 3 774 3542
Montottone FM 4 979 4521
Monte Giberto FM 5 801 5322
Monte Rinaldo FM 5 379 5701
Carassai AP 5 1100 6801
Ponzano di Fermo FM 6 1674 8475
Monsampietro Morico FM 6 659 9134
Montalto delle Marche AP 7 2122 11256
Grottazzolina FM 7 3398 14654
Monterubbiano FM 8 2230 16884
Monteleone di Fermo FM 8 395 17279
Montelparo FM 9 778 18057
Belmonte Piceno FM 9 646 18703
Cossignano AP 9 978 19681
Moresco FM 9 598 20279
Montedinove AP 10 488 20767
Montefiore dell'Aso AP 10 2123 22890
Magliano di Tenna FM 11 1452 24342
Santa Vittoria in Matenano FM 11 1330 25672
Montegiorgio FM 12 6851 32523
Servigliano FM 12 2336 34859
Rotella AP 12 906 35765
Ripatransone AP 12 4309 40074
Castignano AP 13 2796 42870
Rapagnano FM 13 2145 45015
Lapedona FM 13 1166 46181
Massignano AP 14 1638 47819
Offida AP 14 5058 52877
Fermo FM 14 37655 90532
Falerone FM 14 3337 93869
Monte Vidon Corrado FM 14 731 94600
Altidona FM 15 3390 97990
Force AP 15 1354 99344
Torre San Patrizio FM 15 2048 101392
Campofilone FM 15 1916 103308
Montefalcone Appennino FM 16 424 103732
Monte San Martino MC 16 765 104497
Smerillo FM 16 365 104862
Montappone FM 16 1682 106544
Monte San Pietrangeli FM 16 2458 109002
Massa Fermana FM 17 963 109965
Penna San Giovanni MC 17 1108 111073
Appignano del Tronto AP 17 1785 112858
Francavilla d'Ete FM 17 964 113822
Monte Urano FM 18 8353 122175
Pedaso FM 18 2800 124975
Castorano AP 19 2380 127355
Cupra Marittima AP 19 5398 132753
Acquaviva Picena AP 19 3831 136584
Mogliano MC 19 4696 141280
Sant'Angelo in Pontano MC 20 1436 142716

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km N of Teramo (54892 inhabitants)
64 Km S of Ancona (100861 inhabitants)
73 Km NW of Montesilvano (53738 inhabitants)
76 Km E of Foligno (57155 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
81 Km NW of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
97 Km NE of Terni (111501 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 2.3 1985-09-20
12:27:11
43.051 13.631 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 13499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-20 12:27:11 ± 0.307
Latitude 43.0510 ± 0.0118
Longitude 13.6310 ± 0.0258
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13499

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) 2475.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 192
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00866
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 13499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1985-09-20T12:27:44.50 10.0 undecidable manual SG 226 0.9657 -0.02 0.4
--.AS1.Z. 1985-09-20T12:27:36.00 10.0 undecidable manual SG 271 0.7104 -0.51 0.3
--.MNS.Z. 1985-09-20T12:27:32.00 10.0 undecidable manual PG 226 0.9657 1.37 0
--.CM2.Z. 1985-09-20T12:27:26.10 10.0 undecidable manual SG 291 0.3774 0.21 0.7
--.AS1.Z. 1985-09-20T12:27:26.00 10.0 undecidable manual PG 271 0.7104 0 1.2
--.ALP.Z. 1985-09-20T12:27:22.20 10.0 undecidable manual SG 189 0.2664 -0.18 0.8
--.AM1.Z. 1985-09-20T12:27:22.30 10.0 undecidable manual PG 357 0.4995 0.27 1.2
--.CM2.Z. 1985-09-20T12:27:19.50 10.0 undecidable manual PG 291 0.3774 -0.37 2.1
--.ALP.Z. 1985-09-20T12:27:17.50 10.0 positive manual PG 189 0.2664 -0.34 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download