Earthquake with magnitude of Md 2.2 on date 10-04-1992 and time 05:33:18 (UTC) in region 2 km SW Pomarance (PI)

A magnitude Md 2.2 earthquake occured in region: 2 km SW Pomarance (PI), on

  • 10-04-1992 05:33:18 (UTC)
  • 10-04-1992 07:33:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.292, 10.854 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
Pomarance PI 2 5897 5897
Castelnuovo di Val di Cecina PI 10 2231 8128
Volterra PI 12 10519 18647
Montecatini Val di Cecina PI 14 1749 20396
Radicondoli SI 16 914 21310
Monterotondo Marittimo GR 16 1371 22681
Casole d'Elsa SI 16 3897 26578
Monteverdi Marittimo PI 17 758 27336
Guardistallo PI 18 1234 28570
Montescudaio PI 19 2144 30714
Casale Marittimo PI 19 1122 31836

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Siena (53903 inhabitants)
53 Km SE of Livorno (159219 inhabitants)
58 Km SW of Scandicci (50609 inhabitants)
60 Km SE of Pisa (89158 inhabitants)
62 Km SW of Firenze (382808 inhabitants)
63 Km NW of Grosseto (82087 inhabitants)
68 Km SE of Lucca (89046 inhabitants)
68 Km S of Prato (191150 inhabitants)
72 Km S of Pistoia (90315 inhabitants)
80 Km SE of Viareggio (62467 inhabitants)
85 Km W of Arezzo (99543 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 2.2
ML-VAX 2.1
1992-04-10
05:33:18
43.292 10.854 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 162239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-04-10 05:33:18 ± 0.334
Latitude 43.2920 ± 0.0191
Longitude 10.8540 ± 0.0410
Depth (km) 10 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 162239

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) 3945.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00437
Epicentral distance of station farthest from the epicenter (degree) 0.00963
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 162239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:31:37

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 162239
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
--.GU9.Z. 1992-04-10T05:33:53.36 10.0 undecidable manual SN 349 0.0096 -1.04 0.3
--.SFI.Z. 1992-04-10T05:33:51.29 10.0 undecidable manual SG 49 0.0085 0.64 0.5
--.MAO.Z. 1992-04-10T05:33:48.70 10.0 undecidable manual SG 165 0.0081 -0.57 0.6
--.GU9.Z. 1992-04-10T05:33:40.10 10.0 undecidable manual PN 349 0.0096 0.92 0.9
--.SFI.Z. 1992-04-10T05:33:37.78 10.0 undecidable manual PG 49 0.0085 0.76 1.1
--.MAO.Z. 1992-04-10T05:33:36.25 10.0 undecidable manual PG 165 0.0081 0.03 1.7
--.PII.Z. 1992-04-10T05:33:35.90 10.0 undecidable manual SG 330 0.0044 -0.99 0.3
--.CRE.Z. 1992-04-10T05:33:33.74 10.0 undecidable manual PG 67 0.0077 -1.7 0.3
--.PII.Z. 1992-04-10T05:33:28.42 10.0 positive manual PG 330 0.0044 -0.19 3.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download