Earthquake with magnitude of Md 2.5 on date 04-09-1985 and time 14:15:31 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude Md 2.5 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 04-09-1985 14:15:31 (UTC)
  • 04-09-1985 16:15:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.35, 15.77 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
Palmi RC 7 18930 18930
Bagnara Calabra RC 8 10255 29185
Seminara RC 9 2811 31996
MelicuccĂ  RC 11 930 32926
Scilla RC 12 4964 37890
Sant'Eufemia d'Aspromonte RC 13 4120 42010
San Procopio RC 13 534 42544
Sinopoli RC 14 2089 44633
Gioia Tauro RC 15 19864 64497
San Roberto RC 16 1750 66247
Cosoleto RC 17 859 67106
Fiumara RC 17 1018 68124
Campo Calabro RC 18 4536 72660
Delianuova RC 18 3352 76012
Rizziconi RC 18 7829 83841
Villa San Giovanni RC 18 13784 97625
Scido RC 19 931 98556
Calanna RC 19 934 99490
Varapodio RC 19 2160 101650
Laganadi RC 20 413 102063
San Ferdinando RC 20 4490 106553
Sant'Alessio in Aspromonte RC 20 343 106896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Messina (238439 inhabitants)
29 Km NE of Reggio di Calabria (183035 inhabitants)
85 Km SW of Lamezia Terme (70714 inhabitants)
95 Km SW of Catanzaro (90612 inhabitants)
97 Km NE of Acireale (52622 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 2.5 1985-09-04
14:15:31
38.35 15.77 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-04 14:15:31 ± 0.828
Latitude 38.35 ± 0.08
Longitude 15.77 ± 0.10
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12769

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) 12529.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.3
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.01271
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 12769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GIB.Z. 1985-09-04T14:15:58.70 10.0 undecidable manual PN 255 0.0127 1.55 0.5
--.RI2.Z. 1985-09-04T14:15:45.20 10.0 undecidable manual PG 82 0.005 1.94 0.7
--.MSI.Z. 1985-09-04T14:15:41.00 10.0 undecidable manual SG 228 0.0019 0.28 0.7
--.RCI.Z. 1985-09-04T14:15:40.00 10.0 undecidable manual SG 201 0.0023 -2.06 0.3
--.MSI.Z. 1985-09-04T14:15:37.50 10.0 positive manual PG 228 0.0019 0.6 3.2
--.DR2.Z. 1985-09-04T14:15:36.50 10.0 undecidable manual PG 23 0.0028 -2.21 0.6
--.RCI.Z. 1985-09-04T14:15:35.90 10.0 undecidable manual PG 201 0.0023 -1.77 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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