Earthquake with magnitude of Md 3.4 on date 20-09-1999 and time 08:57:00 (Italy) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude Md 3.4 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 20-09-1999 06:57:00 (UTC)
  • 20-09-1999 08:57:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.42, 15.64 at 173 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 19 18930 18930
Scilla RC 20 4964 23894

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of Messina (238439 inhabitants)
35 Km N of Reggio di Calabria (183035 inhabitants)
85 Km SW of Lamezia Terme (70714 inhabitants)
99 Km SW of Catanzaro (90612 inhabitants)
99 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
Bulletin
Rev1000
Md 3.4
ML-VAX 2.9
1999-09-20
06:57:00
38.42 15.65 173 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 373849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-09-20 06:57:00 ± 0.747
Latitude 38.42 ± 0.03
Longitude 15.65 ± 0.05
Depth (km) 173 ± 8 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 373849

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) 5178.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.03084
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 373849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:50:57

ML:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 23
Type of magnitude ML
Reference to an origin 373849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LCI.Z. 1999-09-20T06:58:17.90 10.0 undecidable manual S 44 0.0243 -0.89 0.2
--.BRT.Z. 1999-09-20T06:58:17.77 10.0 undecidable manual S 24 0.0244 -1.24 0.1
--.LT9.Z. 1999-09-20T06:58:10.48 10.0 undecidable manual S 22 0.0212 -1.33 0.1
--.RVI2.Z. 1999-09-20T06:57:55.22 10.0 undecidable manual P 339 0.0308 0.38 0.8
--.CPI2.Z. 1999-09-20T06:57:53.70 10.0 undecidable manual P 342 0.0299 0.25 0.9
--.RGNG.Z. 1999-09-20T06:57:51.93 10.0 positive manual P 359 0.0292 -0.62 1.4
--.SMB1.Z. 1999-09-20T06:57:50.35 10.0 undecidable manual P 346 0.0274 0.26 1
--.MAB1.Z. 1999-09-20T06:57:48.86 10.0 undecidable manual P 343 0.0267 -0.22 1
--.FG5.Z. 1999-09-20T06:57:48.88 10.0 negative manual P 354 0.0258 1.04 0.8
--.PSB1.Z. 1999-09-20T06:57:47.96 10.0 undecidable manual P 347 0.0258 0.14 1
--.VTB1.Z. 1999-09-20T06:57:47.84 10.0 undecidable manual P 344 0.0257 0.07 1.1
--.LCI.Z. 1999-09-20T06:57:45.31 10.0 undecidable manual P 44 0.0243 -0.4 1
--.CA9.Z. 1999-09-20T06:57:44.49 10.0 undecidable manual P 356 0.0223 1.4 0.2
--.BRT.Z. 1999-09-20T06:57:44.17 10.0 undecidable manual P 24 0.0244 -1.66 0.1
--.CI9.Z. 1999-09-20T06:57:43.45 10.0 undecidable manual P 349 0.0223 0.34 1
--.SOI.Z. 1999-09-20T06:57:43.80 10.0 undecidable manual S 136 0.0042 1.02 0.2
--.MU9.Z. 1999-09-20T06:57:42.10 10.0 undecidable manual P 357 0.021 0.67 0.8
--.LT9.Z. 1999-09-20T06:57:40.19 10.0 undecidable manual P 22 0.0212 -1.49 0.2
--.SGO.Z. 1999-09-20T06:57:39.43 10.0 undecidable manual P 353 0.0193 0.2 1.2
--.CLTB.Z. 1999-09-20T06:57:38.34 10.0 undecidable manual P 246 0.0188 -0.19 1.2
--.FAVR.Z. 1999-09-20T06:57:38.30 10.0 undecidable manual P 234 0.0174 1.23 0.3
--.SL9.Z. 1999-09-20T06:57:36.98 10.0 undecidable manual P 359 0.0176 -0.16 1.3
--.ORI.Z. 1999-09-20T06:57:35.53 10.0 undecidable manual P 20 0.0156 0.84 0.7
--.PZI.Z. 1999-09-20T06:57:32.13 10.0 negative manual P 202 0.0132 0.21 2.5
--.MEU.Z. 1999-09-20T06:57:31.94 10.0 negative manual P 206 0.0131 0.16 2.5
--.TDS.Z. 1999-09-20T06:57:30.80 10.0 undecidable manual P 23 0.0121 0.06 1.3
--.CS9.Z. 1999-09-20T06:57:29.54 10.0 undecidable manual P 249 0.0119 -0.97 0.6
--.GIB.Z. 1999-09-20T06:57:29.68 10.0 negative manual P 251 0.0121 -0.99 1.1
--.AU9.Z. 1999-09-20T06:57:28.86 10.0 negative manual P 196 0.0108 -0.63 1.8
--.MNO.Z. 1999-09-20T06:57:27.48 10.0 undecidable manual P 237 0.008 0.57 1
--.GRI.Z. 1999-09-20T06:57:26.82 10.0 negative manual P 56 0.0065 1.01 1.1
--.SOI.Z. 1999-09-20T06:57:25.21 10.0 negative manual P 136 0.0042 0.71 1.6
--.SA1.Z. 1999-09-20T06:57:24.78 10.0 negative manual P 282 0.0058 -0.59 1.9
--.MSI.Z. 1999-09-20T06:57:23.22 10.0 negative manual P 197 0.002 -0.5 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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