Earthquake with magnitude of Md 2.3 on date 11-08-1988 and time 18:43:10 (Italy) in region 4 km E Rufina (FI)

A magnitude Md 2.3 earthquake occured in region: 4 km E Rufina (FI), on

  • 11-08-1988 16:43:10 (UTC)
  • 11-08-1988 18:43:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.81, 11.53 at 5 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
Rufina FI 4 7346 7346
Pelago FI 5 7660 15006
Londa FI 6 1840 16846
Pontassieve FI 8 20603 37449
Dicomano FI 9 5515 42964
Montemignaio AR 11 566 43530
Rignano sull'Arno FI 12 8651 52181
Reggello FI 14 16290 68471
Vicchio FI 15 8044 76515
San Godenzo FI 15 1167 77682
Pratovecchio Stia AR 16 5845 83527
Castel San Niccolò AR 16 2707 86234
Figline e Incisa Valdarno FI 18 23505 109739
Bagno a Ripoli FI 18 25611 135350
Fiesole FI 19 13969 149319
Borgo San Lorenzo FI 20 18211 167530

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Firenze (382808 inhabitants)
29 Km E of Scandicci (50609 inhabitants)
36 Km E of Prato (191150 inhabitants)
48 Km NW of Arezzo (99543 inhabitants)
51 Km E of Pistoia (90315 inhabitants)
57 Km N of Siena (53903 inhabitants)
60 Km SW of Faenza (58541 inhabitants)
61 Km SW of Forlì (117913 inhabitants)
62 Km S of Imola (69797 inhabitants)
68 Km SW of Cesena (96758 inhabitants)
77 Km S of Bologna (386663 inhabitants)
83 Km E of Lucca (89046 inhabitants)
86 Km SW of Ravenna (159116 inhabitants)
88 Km W of Rimini (147750 inhabitants)
91 Km E of Pisa (89158 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 2.3 1988-08-11
16:43:10
43.81 11.53 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 75339
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-08-11 16:43:10 ± 0.919
Latitude 43.81 ± 0.02
Longitude 11.53 ± 0.06
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 75339

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) 5477
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 293
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.00996
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 75339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:11:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1988-08-11T16:43:48.50 10.0 undecidable manual SN 132 0.01 0.16 0.6
--.ARV.Z. 1988-08-11T16:43:48.50 10.0 undecidable manual SG 106 0.0096 1.12 0.2
--.ASS.Z. 1988-08-11T16:43:33.00 10.0 undecidable manual PN 132 0.01 0.79 1
--.ARV.Z. 1988-08-11T16:43:32.50 10.0 undecidable manual PG 106 0.0096 0.84 0.9
--.CRE.Z. 1988-08-11T16:43:23.50 10.0 undecidable manual SG 122 0.0032 -0.64 0.6
--.CRE.Z. 1988-08-11T16:43:17.00 10.0 undecidable manual PG 122 0.0032 -1.25 0.6
--.PGD.Z. 1988-08-11T16:43:16.71 10.0 undecidable manual SG 65 0.0013 0.42 0.7
--.PGD.Z. 1988-08-11T16:43:13.13 10.0 positive manual PG 65 0.0013 -0.58 3.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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