Earthquake with magnitude of Md 2.2 on date 31-08-1988 and time 11:07:00 (UTC) in region 4 km E Sillano Giuncugnano (LU)

A magnitude Md 2.2 earthquake occured in region: 4 km E Sillano Giuncugnano (LU), on

  • 31-08-1988 11:07:00 (UTC)
  • 31-08-1988 13:07:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2130, 10.3440 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
Sillano Giuncugnano LU 4 1085 1085
Piazza al Serchio LU 5 2367 3452
San Romano in Garfagnana LU 5 1410 4862
Camporgiano LU 6 2176 7038
Villa Collemandina LU 7 1334 8372
Castiglione di Garfagnana LU 9 1818 10190
Careggine LU 10 564 10754
Pieve Fosciana LU 11 2414 13168
Minucciano LU 12 2102 15270
Vagli Sotto LU 12 939 16209
Castelnuovo di Garfagnana LU 13 5950 22159
Casola in Lunigiana MS 13 988 23147
Fosciandora LU 14 602 23749
Molazzana LU 17 1043 24792
Ventasso RE 18 4295 29087
Fivizzano MS 18 7925 37012
Fabbriche di Vergemoli LU 18 768 37780
Gallicano LU 18 3807 41587
Comano MS 19 714 42301
Barga LU 19 10034 52335
Villa Minozzo RE 20 3750 56085

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Carrara (63133 inhabitants)
25 Km NE of Massa (69479 inhabitants)
39 Km N of Viareggio (62467 inhabitants)
43 Km E of La Spezia (93959 inhabitants)
43 Km NW of Lucca (89046 inhabitants)
55 Km N of Pisa (89158 inhabitants)
55 Km NW of Pistoia (90315 inhabitants)
59 Km SW of Reggio nell'Emilia (171345 inhabitants)
66 Km S of Parma (192836 inhabitants)
67 Km SW of Modena (184973 inhabitants)
71 Km NW of Prato (191150 inhabitants)
73 Km N of Livorno (159219 inhabitants)
77 Km SW of Carpi (70699 inhabitants)
84 Km NW of Scandicci (50609 inhabitants)
85 Km W of Bologna (386663 inhabitants)
88 Km NW of Firenze (382808 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 1988-08-31
11:07:00
44.213 10.344 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 76539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-08-31 11:07:00 ± 0.266
Latitude 44.2130 ± 0.0347
Longitude 10.3440 ± 0.0371
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 76539

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) 4862.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00210
Epicentral distance of station farthest from the epicenter (degree) 0.00761
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 76539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:12:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.BOB.Z. 1988-08-31T11:07:17.21 10.0 undecidable manual PG 311 0.8436 0.18 1.2
--.MME.Z. 1988-08-31T11:07:11.12 10.0 undecidable manual SG 94 0.2553 0.75 0.2
--.BDI.Z. 1988-08-31T11:07:10.23 10.0 undecidable manual SG 129 0.2331 0.49 0.4
--.BDI.Z. 1988-08-31T11:07:05.57 10.0 undecidable manual PG 129 0.2331 -0.16 2.1
--.MME.Z. 1988-08-31T11:07:05.57 10.0 undecidable manual PG 94 0.2553 -0.53 1
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