Earthquake with magnitude of mb 4.0 on date 24-04-1985 and time 11:30:23 (UTC) in region Tirreno Meridionale (MARE)

A magnitude mb 4.0 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 24-04-1985 11:30:23 (UTC)
  • 24-04-1985 13:30:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.88, 15.66 at 200 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km W of Lamezia Terme (70714 inhabitants)
69 Km SW of Cosenza (67546 inhabitants)
77 Km N of Messina (238439 inhabitants)
81 Km W of Catanzaro (90612 inhabitants)
86 Km N of Reggio di Calabria (183035 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 mb 4.0 1985-04-24
11:30:23
38.88 15.66 200 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 5419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-24 11:30:23 ± 0.553
Latitude 38.88 ± 0.03
Longitude 15.66 ± 0.03
Depth (km) 200 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5419

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) 3977.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00639
Epicentral distance of station farthest from the epicenter (degree) 0.08168
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitude information

mb:4

Field Value
Value 4
Uncertainty
Num. used stations
Type of magnitude mb
Reference to an origin 5419
Agency INGV
Autore ISC
Time of creation (UTC) 2013-01-09 08:04:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BN9.Z. 1985-04-24T11:32:36.00 10.0 undecidable manual P 315 0.0817 2.41 0
--.VAI.Z. 1985-04-24T11:32:27.60 10.0 positive manual P 325 0.0776 -0.03 1.2
--.VAY.Z. 1985-04-24T11:31:49.50 10.0 undecidable manual P 62 0.0524 -0.51 0.6
--.SKO.Z. 1985-04-24T11:31:43.70 10.0 undecidable manual P 52 0.0483 -0.38 0.7
--.LCI.Z. 1985-04-24T11:31:40.00 10.0 undecidable manual S 51 0.0215 1.7 0.1
--.KKS.Z. 1985-04-24T11:31:37.20 10.0 undecidable manual P 46 0.0434 0.34 0.8
--.BRT.Z. 1985-04-24T11:31:37.00 10.0 undecidable manual S 28 0.0206 0.43 0.6
--.PHP.Z. 1985-04-24T11:31:34.40 10.0 undecidable manual P 50 0.0414 0.4 0.8
--.OHR.Z. 1985-04-24T11:31:33.40 10.0 undecidable manual P 58 0.0406 0.45 0.8
--.TTG.Z. 1985-04-24T11:31:31.50 10.0 undecidable manual P 35 0.0402 -0.87 0.5
--.SDA.Z. 1985-04-24T11:31:30.00 10.0 negative manual P 41 0.0385 0.11 1.8
--.KBN.Z. 1985-04-24T11:31:30.90 10.0 negative manual P 63 0.0387 0.75 1.2
--.PO9.Z. 1985-04-24T11:31:29.50 10.0 undecidable manual P 331 0.038 0.42 0.8
--.MNS.Z. 1985-04-24T11:31:28.00 10.0 undecidable manual P 327 0.0375 -0.35 0.9
--.HCY.Z. 1985-04-24T11:31:27.50 10.0 undecidable manual P 29 0.0375 -0.85 0.6
--.TIR.Z. 1985-04-24T11:31:27.20 10.0 positive manual P 50 0.0364 0.25 1.8
--.AQU.Z. 1985-04-24T11:31:25.00 10.0 undecidable manual P 333 0.0348 0.41 0.9
--.GIB.Z. 1985-04-24T11:31:23.00 10.0 undecidable manual S 235 0.014 -0.42 0.6
--.ORI.Z. 1985-04-24T11:31:22.00 10.0 undecidable manual S 26 0.0118 2.29 0
--.SRN.Z. 1985-04-24T11:31:20.40 10.0 negative manual P 71 0.0315 0.41 1.8
--.VLO.Z. 1985-04-24T11:31:18.30 10.0 negative manual P 59 0.0301 0.14 2.1
--.SD1.Z. 1985-04-24T11:31:15.50 10.0 undecidable manual P 333 0.0283 -0.27 1
--.ERC.Z. 1985-04-24T11:31:10.00 10.0 undecidable manual P 251 0.0229 1.49 0.2
--.SGG.Z. 1985-04-24T11:31:09.90 10.0 negative manual P 338 0.0241 -0.24 2.1
--.FA1.Z. 1985-04-24T11:31:07.00 10.0 undecidable manual P 224 0.0202 1.89 0.1
--.LCI.Z. 1985-04-24T11:31:06.00 10.0 undecidable manual P 51 0.0215 -0.66 0.8
--.BAI.Z. 1985-04-24T11:31:05.50 10.0 undecidable manual P 21 0.0217 -1.48 0.2
--.PE1.Z. 1985-04-24T11:31:05.00 10.0 positive manual P 34 0.0211 -1.32 0.6
--.TR9.Z. 1985-04-24T11:31:04.70 10.0 undecidable manual P 351 0.0197 0.21 1.1
--.BRT.Z. 1985-04-24T11:31:04.00 10.0 negative manual P 28 0.0206 -1.66 0.3
--.OVO.Z. 1985-04-24T11:31:04.30 10.0 undecidable manual P 333 0.0195 0.03 1.1
--.BS1.Z. 1985-04-24T11:31:02.20 10.0 negative manual P 341 0.0179 -0.23 2.1
--.SOR.Z. 1985-04-24T11:31:01.50 10.0 negative manual P 329 0.0178 -0.76 1.5
--.PA1.Z. 1985-04-24T11:31:01.00 10.0 negative manual P 197 0.0174 -0.85 1.3
--.SGO.Z. 1985-04-24T11:30:59.50 10.0 negative manual P 350 0.0152 0.1 2.2
--.GIB.Z. 1985-04-24T11:30:57.20 10.0 negative manual P 235 0.014 -0.87 1.3
--.ORI.Z. 1985-04-24T11:30:56.50 10.0 negative manual P 26 0.0118 0.57 1.7
--.ROI.Z. 1985-04-24T11:30:54.20 10.0 undecidable manual P 44 0.0088 0.81 1.4
--.CSI.Z. 1985-04-24T11:30:53.70 10.0 undecidable manual P 27 0.0092 0.03 2.2
--.RCI.Z. 1985-04-24T11:30:52.00 10.0 undecidable manual P ? 180 0.007 -0.07 0.4
--.SA1.Z. 1985-04-24T11:30:51.00 10.0 undecidable manual P 243 0.0064 -0.75 0.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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