Earthquake with magnitude of Md 2.3 on date 17-02-1985 and time 11:17:24 (Italy) in region 3 km NE Sant'Angelo in Pontano (MC)

A magnitude Md 2.3 earthquake occured in region: 3 km NE Sant'Angelo in Pontano (MC), on

  • 17-02-1985 10:17:24 (UTC)
  • 17-02-1985 11:17:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.12, 13.42 at 18 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'Angelo in Pontano MC 3 1436 1436
Ripe San Ginesio MC 5 852 2288
Montappone FM 5 1682 3970
Falerone FM 5 3337 7307
Loro Piceno MC 5 2401 9708
Monte Vidon Corrado FM 6 731 10439
Massa Fermana FM 6 963 11402
Colmurano MC 7 1263 12665
Penna San Giovanni MC 7 1108 13773
Servigliano FM 8 2336 16109
San Ginesio MC 8 3498 19607
Gualdo MC 9 815 20422
Mogliano MC 9 4696 25118
Urbisaglia MC 9 2628 27746
Monte San Martino MC 10 765 28511
Montegiorgio FM 10 6851 35362
Belmonte Piceno FM 11 646 36008
Petriolo MC 12 1998 38006
Camporotondo di Fiastrone MC 12 563 38569
Monteleone di Fermo FM 12 395 38964
Cessapalombo MC 13 512 39476
Monsampietro Morico FM 13 659 40135
Francavilla d'Ete FM 13 964 41099
Santa Vittoria in Matenano FM 13 1330 42429
Smerillo FM 13 365 42794
Sarnano MC 13 3264 46058
Magliano di Tenna FM 14 1452 47510
Tolentino MC 14 20069 67579
Montelparo FM 15 778 68357
Belforte del Chienti MC 15 1886 70243
Grottazzolina FM 15 3398 73641
Rapagnano FM 15 2145 75786
Montefalcone Appennino FM 15 424 76210
Montottone FM 15 979 77189
Caldarola MC 15 1823 79012
Monte San Pietrangeli FM 16 2458 81470
Amandola FM 16 3629 85099
Corridonia MC 16 15430 100529
Monte Rinaldo FM 17 379 100908
Torre San Patrizio FM 17 2048 102956
Pollenza MC 17 6618 109574
Monte Giberto FM 18 801 110375
Comunanza AP 18 3166 113541
Ortezzano FM 19 774 114315
Force AP 19 1354 115669
Monte Vidon Combatte FM 19 433 116102
Serrapetrona MC 19 966 117068
Monte San Giusto MC 20 8191 125259

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km S of Ancona (100861 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
61 Km E of Foligno (57155 inhabitants)
83 Km E of Perugia (166134 inhabitants)
86 Km N of L'Aquila (69753 inhabitants)
87 Km SE of Fano (60888 inhabitants)
88 Km NE of Terni (111501 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km SE of Pesaro (94582 inhabitants)
98 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 2.3 1985-02-17
10:17:24
43.12 13.42 18 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-17 10:17:24 ± 0.536
Latitude 43.12 ± 0.02
Longitude 13.42 ± 0.05
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1869

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) 4741.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00818
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 1869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-02-17T10:17:55.50 10.0 undecidable manual SN 216 0.0082 0.49 0.3
--.PO9.Z. 1985-02-17T10:17:48.50 10.0 undecidable manual SG 212 0.0057 1.25 0
--.AS1.Z. 1985-02-17T10:17:44.00 10.0 undecidable manual SG 264 0.005 -0.46 0.4
--.MNS.Z. 1985-02-17T10:17:41.80 10.0 undecidable manual PN 216 0.0082 -0.27 1.2
--.AQU.Z. 1985-02-17T10:17:39.00 10.0 undecidable manual PG? 180 0.0069 -0.8 0.1
--.PO9.Z. 1985-02-17T10:17:37.50 10.0 undecidable manual PG 212 0.0057 -0.09 1.7
--.AS1.Z. 1985-02-17T10:17:35.50 10.0 undecidable manual PG 264 0.005 -0.48 1
--.AR1.Z. 1985-02-17T10:17:35.50 10.0 undecidable manual PG 317 0.0045 0.42 1.1
--.CM8.Z. 1985-02-17T10:17:33.50 10.0 undecidable manual SG 290 0.0019 -0.31 0.8
--.CM8.Z. 1985-02-17T10:17:30.00 10.0 undecidable manual PG 290 0.0019 0.18 3.3
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