Earthquake with magnitude of Md 2.7 on date 18-08-1985 and time 14:42:41 (Italy) in region 1 km SW Sant'Elpidio a Mare (FM)

A magnitude Md 2.7 earthquake occured in region: 1 km SW Sant'Elpidio a Mare (FM), on

  • 18-08-1985 12:42:41 (UTC)
  • 18-08-1985 14:42:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.22, 13.68 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
Sant'Elpidio a Mare FM 1 17110 17110
Monte Urano FM 2 8353 25463
Montegranaro FM 4 12990 38453
Porto Sant'Elpidio FM 7 26152 64605
Monte San Giusto MC 7 8191 72796
Fermo FM 8 37655 110451
Torre San Patrizio FM 8 2048 112499
Monte San Pietrangeli FM 9 2458 114957
Civitanova Marche MC 10 41983 156940
Porto San Giorgio FM 10 16121 173061
Rapagnano FM 10 2145 175206
Montecosaro MC 11 7113 182319
Francavilla d'Ete FM 12 964 183283
Magliano di Tenna FM 12 1452 184735
Morrovalle MC 13 10195 194930
Ponzano di Fermo FM 14 1674 196604
Grottazzolina FM 14 3398 200002
Corridonia MC 14 15430 215432
Lapedona FM 15 1166 216598
Monte Giberto FM 15 801 217399
Monterubbiano FM 16 2230 219629
Altidona FM 16 3390 223019
Montegiorgio FM 16 6851 229870
Moresco FM 16 598 230468
Montelupone MC 16 3596 234064
Potenza Picena MC 17 15936 250000
Mogliano MC 17 4696 254696
Petritoli FM 18 2335 257031
Petriolo MC 18 1998 259029
Massa Fermana FM 19 963 259992
Pedaso FM 19 2800 262792
Belmonte Piceno FM 19 646 263438
Campofilone FM 19 1916 265354
Montottone FM 20 979 266333
Monte Vidon Corrado FM 20 731 267064
Montefiore dell'Aso AP 20 2123 269187
Monte Vidon Combatte FM 20 433 269620

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SE of Ancona (100861 inhabitants)
63 Km N of Teramo (54892 inhabitants)
85 Km E of Foligno (57155 inhabitants)
87 Km SE of Fano (60888 inhabitants)
88 Km NW of Montesilvano (53738 inhabitants)
95 Km NW of Pescara (121014 inhabitants)
98 Km SE of Pesaro (94582 inhabitants)
100 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 2.7 1985-08-18
12:42:41
43.23 13.69 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-18 12:42:41 ± 0.369
Latitude 43.23 ± 0.02
Longitude 13.69 ± 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 12019

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) 3344.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00405
Epicentral distance of station farthest from the epicenter (degree) 0.03084
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 12019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1985-08-18T12:43:34.50 10.0 undecidable manual PN 349 0.0308 -0.39 0.5
--.SD1.Z. 1985-08-18T12:43:09.00 10.0 undecidable manual PN 176 0.0136 0.31 1
--.MNS.Z. 1985-08-18T12:43:03.00 10.0 undecidable manual PN 221 0.01 -0.18 1.4
--.AR1.Z. 1985-08-18T12:43:03.00 10.0 undecidable manual SG 297 0.0054 -0.13 0.6
--.PRO.Z. 1985-08-18T12:43:00.50 10.0 undecidable manual PG 320 0.0081 0.83 0.3
--.ALP.Z. 1985-08-18T12:42:59.30 10.0 undecidable manual SG 190 0.004 1.05 0.1
--.PO9.Z. 1985-08-18T12:42:58.50 10.0 undecidable manual PG 220 0.0076 -0.12 1.5
--.AS1.Z. 1985-08-18T12:42:57.00 10.0 undecidable manual PG 258 0.0069 -0.18 1.4
--.AR1.Z. 1985-08-18T12:42:54.00 10.0 undecidable manual PG 297 0.0054 -0.11 1.5
--.ALP.Z. 1985-08-18T12:42:50.80 10.0 negative manual PG 190 0.004 -0.5 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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