Earthquake with magnitude of Md 3.6 on date 07-07-1985 and time 12:33:40 (Italy) in region 2 km NW Accumoli (RI)

A magnitude Md 3.6 earthquake occured in region: 2 km NW Accumoli (RI), on

  • 07-07-1985 10:33:40 (UTC)
  • 07-07-1985 12:33:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.23 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
Accumoli RI 2 667 667
Amatrice RI 9 2657 3324
Arquata del Tronto AP 9 1178 4502
Cittareale RI 11 482 4984
Norcia PG 15 4957 9941
Acquasanta Terme AP 16 2916 12857
Montegallo AP 18 523 13380
Cascia PG 18 3217 16597
Campotosto AQ 20 542 17139
Montereale AQ 20 2581 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
98 Km E of Viterbo (67173 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 3.6 1985-07-07
10:33:40
42.7 13.23 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 9729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-07-07 10:33:40 ± 0.202
Latitude 42.70 ± 0.01
Longitude 13.23 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 9729

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) 2403.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.03286
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

Md:3.6

Field Value
Value 3.6
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 9729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:13:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PE1.Z. 1985-07-07T10:34:38.00 10.0 undecidable manual PN 120 0.0329 1.09 0.4
--.ORI.Z. 1985-07-07T10:34:36.00 10.0 undecidable manual PN 136 0.0322 0.1 0.8
--.SAL.Z. 1985-07-07T10:34:35.50 10.0 undecidable manual PN 327 0.0314 0.83 0.6
--.BRT.Z. 1985-07-07T10:34:35.50 10.0 undecidable manual PN 121 0.0309 1.5 0.2
--.BD1.Z. 1985-07-07T10:34:20.00 10.0 undecidable manual PN 306 0.0211 1.04 0.6
--.SD1.Z. 1985-07-07T10:34:16.50 10.0 undecidable manual SN 156 0.0097 -0.39 0.6
--.AM1.Z. 1985-07-07T10:34:12.90 10.0 undecidable manual SG 17 0.0079 1.79 0.2
--.AR1.Z. 1985-07-07T10:34:09.00 10.0 undecidable manual SG 345 0.0074 0 0.6
--.MA1.Z. 1985-07-07T10:34:08.50 10.0 undecidable manual PN 260 0.014 0.38 1.3
--.DUI.Z. 1985-07-07T10:34:07.00 10.0 undecidable manual PN 138 0.0124 1.28 0.6
--.CH1.Z. 1985-07-07T10:34:06.00 10.0 undecidable manual PN 315 0.0118 1.2 0.7
--.PRO.Z. 1985-07-07T10:34:05.50 10.0 undecidable manual PN 348 0.0112 1.72 0.3
--.SD1.Z. 1985-07-07T10:34:01.00 10.0 undecidable manual PN 156 0.0097 -0.59 1.3
--.RDP.Z. 1985-07-07T10:34:01.00 10.0 undecidable manual PG 202 0.0091 0.32 1.4
--.AM1.Z. 1985-07-07T10:33:57.60 10.0 positive manual PG 17 0.0079 -0.65 2.4
--.CM2.Z. 1985-07-07T10:33:57.90 10.0 undecidable manual SG 352 0.0044 -0.53 0.8
--.MNS.Z. 1985-07-07T10:33:57.50 10.0 undecidable manual SG 232 0.0046 -1.68 0.2
--.AR1.Z. 1985-07-07T10:33:56.50 10.0 undecidable manual PG 345 0.0074 -0.53 1.3
--.AQU.Z. 1985-07-07T10:33:53.50 10.0 undecidable manual SG 160 0.0033 -1 0.4
--.MNS.Z. 1985-07-07T10:33:51.00 10.0 positive manual PG 232 0.0046 -0.36 2.9
--.AS1.Z. 1985-07-07T10:33:51.00 10.0 positive manual PG 310 0.0049 -1.1 1.6
--.CM2.Z. 1985-07-07T10:33:50.10 10.0 positive manual PG 352 0.0044 -0.83 2.1
--.ALP.Z. 1985-07-07T10:33:49.30 10.0 undecidable manual SG 72 0.0023 -1.54 0.2
--.PO9.Z. 1985-07-07T10:33:47.00 10.0 undecidable manual PG 239 0.0022 0.57 1.3
--.AQU.Z. 1985-07-07T10:33:47.50 10.0 undecidable manual PG 160 0.0033 -1.16 0.7
--.ALP.Z. 1985-07-07T10:33:46.10 10.0 positive manual PG 72 0.0023 -0.45 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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