Earthquake with magnitude of ML 1.7 on date 20-03-2012 and time 03:07:42 (UTC) in region 2 km W Augusta (SR)

A magnitude ML 1.7 earthquake occured in region: 2 km W Augusta (SR), on

  • 20-03-2012 03:07:42 (UTC)
  • 20-03-2012 04:07:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.2400, 15.1980 at 27 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
Augusta SR 2 36305 36305
Priolo Gargallo SR 9 12091 48396
Melilli SR 9 13621 62017
Carlentini SR 17 17798 79815
Solarino SR 17 8091 87906
Sortino SR 17 8690 96596
Floridia SR 18 22762 119358
Lentini SR 18 24085 143443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Siracusa (122291 inhabitants)
31 Km SE of Catania (314555 inhabitants)
42 Km S of Acireale (52622 inhabitants)
54 Km NE of Ragusa (73313 inhabitants)
57 Km NE of Modica (54633 inhabitants)
67 Km NE of Vittoria (63339 inhabitants)
86 Km E of Gela (75827 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 1.8
ML 1.7
2012-03-20
03:07:42
37.24 15.198 27 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1350519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-03-20 03:07:42 ± 0.15
Latitude 37.2400 ± 0.0063
Longitude 15.1980 ± 0.0056
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1350519

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 264
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1350519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:57:15

Md:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1350519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:57:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MEU.SHE. 2012-03-20T03:07:55.78 0.1 undecidable manual Sg 246 35.5422 0.067 94
IV.HAVL.HHN. 2012-03-20T03:07:54.95 0.1 undecidable manual Sg 192 31.8459 0.058 96
IV.SSY.HHZ. 2012-03-20T03:07:51.45 0.1 undecidable manual Sg 230 14.2746 -0.159 98
IV.HCRL.HHN. 2012-03-20T03:07:51.82 0.1 undecidable manual Sg 288 15.3735 0.063 98
IV.CESI.HHE. 2012-03-20T03:07:51.03 10.0 undecidable manual Pg 0 0 0
IV.MEU.SHE. 2012-03-20T03:07:50.06 0.1 undecidable manual Pg 246 35.5422 -0.094 94
IV.HAVL.HHN. 2012-03-20T03:07:49.74 0.1 undecidable manual Pg 192 31.8459 0.061 96
IV.SSY.HHZ. 2012-03-20T03:07:47.79 0.1 undecidable manual Pg 230 14.2746 0.006 100
IV.HCRL.HHN. 2012-03-20T03:07:47.87 0.1 negative manual Pg 288 15.3735 0.001 100
IV.GRI.EHZ. 2012-03-20T03:07:41.16 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download