Earthquake with magnitude of Md 2.4 on date 04-03-1985 and time 16:06:52 (UTC) in region 4 km S Cascia (PG)

A magnitude Md 2.4 earthquake occured in region: 4 km S Cascia (PG), on

  • 04-03-1985 16:06:52 (UTC)
  • 04-03-1985 17:06:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.69, 13.02 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
Cascia PG 4 3217 3217
Monteleone di Spoleto PG 7 599 3816
Poggiodomo PG 7 117 3933
Norcia PG 13 4957 8890
Cittareale RI 14 482 9372
Leonessa RI 15 2435 11807
Scheggino PG 16 461 12268
Vallo di Nera PG 16 364 12632
Sant'Anatolia di Narco PG 16 564 13196
Cerreto di Spoleto PG 17 1075 14271
Polino TR 18 233 14504
Accumoli RI 19 667 15171
Posta RI 19 694 15865

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Terni (111501 inhabitants)
40 Km SE of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
56 Km W of Teramo (54892 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km E of Viterbo (67173 inhabitants)
82 Km N of Tivoli (56533 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Roma (2864731 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 2.4 1985-03-04
16:06:52
42.69 13.02 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-04 16:06:52 ± 0.257
Latitude 42.69 ± 0.01
Longitude 13.02 ± 0.03
Depth (km) 10 ± 9 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3009

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) 2742.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.0102
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-03-04T16:07:20.50 10.0 undecidable manual SG 356 0.0073 0.25 0.4
--.SD1.Z. 1985-03-04T16:07:15.00 10.0 undecidable manual PN 148 0.0102 1.1 0.1
--.AS1.Z. 1985-03-04T16:07:09.50 10.0 undecidable manual SG 324 0.0041 0.54 0.6
--.AR1.Z. 1985-03-04T16:07:08.00 10.0 undecidable manual PG 356 0.0073 -0.4 0.9
--.AQU.Z. 1985-03-04T16:07:07.00 10.0 undecidable manual SG 139 0.0039 -1.11 0.1
--.MNS.Z. 1985-03-04T16:07:06.50 10.0 undecidable manual SG 219 0.0035 -0.17 0.9
--.AQU.Z. 1985-03-04T16:07:01.00 10.0 undecidable manual PG 139 0.0039 -0.39 1.2
--.AS1.Z. 1985-03-04T16:07:01.50 10.0 undecidable manual PG 324 0.0041 -0.38 2.4
--.MNS.Z. 1985-03-04T16:07:00.00 10.0 undecidable manual PG 219 0.0035 -0.56 1.8
--.PO9.Z. 1985-03-04T16:06:59.00 10.0 undecidable manual SG 206 0.0011 0.84 0.2
--.PO9.Z. 1985-03-04T16:06:56.00 10.0 negative manual PG 206 0.0011 0.35 2.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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