Earthquake with magnitude of ML-VAX 2.2 on date 10-03-1991 and time 06:46:37 (Italy) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML-VAX 2.2 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 10-03-1991 05:46:37 (UTC)
  • 10-03-1991 06:46:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.5810, 15.6520 at 180 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
Ricadi VV 19 4900 4900

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km N of Messina (238439 inhabitants)
52 Km N of Reggio di Calabria (183035 inhabitants)
73 Km SW of Lamezia Terme (70714 inhabitants)
90 Km W of Catanzaro (90612 inhabitants)
95 Km SW of Cosenza (67546 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
ML-VAX 2.2 1991-03-10
05:46:37
38.581 15.652 180 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 137329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-10 05:46:37 ± 0.74
Latitude 38.5810 ± 0.0264
Longitude 15.6520 ± 0.0867
Depth (km) 180 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137329

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) 8085.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
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) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.02323
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 137329
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(km) Takeoff_angle Residual Weight
--.MGR.Z. 1991-03-10T05:47:35.20 10.0 undecidable manual S 357 1.554 0.37 0.5
--.ORI.Z. 1991-03-10T05:47:35.19 10.0 undecidable manual S 22 1.5762 -0.01 0.6
--.TDS.Z. 1991-03-10T05:47:28.15 10.0 undecidable manual S 26 1.1988 -0.8 0.3
--.GRI.Z. 1991-03-10T05:47:23.80 10.0 undecidable manual S 67 0.6327 0.94 0.3
--.LCI.Z. 1991-03-10T05:47:21.24 10.0 undecidable manual P 46 2.5752 -0.72 0.6
--.SOI.Z. 1991-03-10T05:47:21.52 10.0 undecidable manual S 148 0.5883 -0.2 0.7
--.BRT.Z. 1991-03-10T05:47:20.23 10.0 undecidable manual P 26 2.5641 -1.47 0.1
--.CZI.Z. 1991-03-10T05:47:18.40 10.0 undecidable manual S ! 30 0.7326 -4.66 0
--.SC9.Z. 1991-03-10T05:47:18.47 10.0 undecidable manual S 171 0.3219 -1.39 0.1
--.DR2.Z. 1991-03-10T05:47:16.50 10.0 undecidable manual S ! 73 0.222 -2.94 0
--.ORI.Z. 1991-03-10T05:47:11.80 10.0 undecidable manual P 22 1.5762 0.88 0.6
--.MGR.Z. 1991-03-10T05:47:10.79 10.0 undecidable manual P 357 1.554 0.19 1.4
--.ROI.Z. 1991-03-10T05:47:08.13 10.0 undecidable manual P 35 1.2099 0.68 1
--.CSI.Z. 1991-03-10T05:47:08.95 10.0 undecidable manual P 22 1.2987 0.77 0.8
--.TDS.Z. 1991-03-10T05:47:07.49 10.0 undecidable manual P 26 1.1988 0.18 1.6
--.SE2.Z. 1991-03-10T05:47:05.60 10.0 undecidable manual P 62 0.9324 0.4 1.5
--.GRI.Z. 1991-03-10T05:47:03.84 10.0 undecidable manual P 67 0.6327 0.46 1.4
--.SOI.Z. 1991-03-10T05:47:03.45 10.0 undecidable manual P 148 0.5883 0.32 1.6
--.FE2.Z. 1991-03-10T05:47:03.86 10.0 positive manual P 147 0.6327 0.51 1.3
--.CZI.Z. 1991-03-10T05:47:03.38 10.0 positive manual P 30 0.7326 -0.53 1.3
--.GA2.Z. 1991-03-10T05:47:02.65 10.0 positive manual P 161 0.4329 0.23 1.7
--.SC9.Z. 1991-03-10T05:47:01.55 10.0 undecidable manual P 171 0.3219 -0.51 1.3
--.DR2.Z. 1991-03-10T05:47:01.32 10.0 positive manual P 73 0.222 -0.5 2.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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