Earthquake with magnitude of Md 2.5 on date 02-09-1997 and time 23:45:42 (Italy) in region 2 km NW Montale (PT)

A magnitude Md 2.5 earthquake occured in region: 2 km NW Montale (PT), on

  • 02-09-1997 21:45:42 (UTC)
  • 02-09-1997 23:45:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9530, 11.0090 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
Montale PT 2 10737 10737
Montemurlo PO 4 18456 29193
Agliana PT 6 17525 46718
Pistoia PT 8 90315 137033
Vaiano PO 9 9895 146928
Prato PO 11 191150 338078
Cantagallo PO 12 3105 341183
Quarrata PT 12 26190 367373
Serravalle Pistoiese PT 15 11659 379032
Carmignano PO 15 14450 393482
Poggio a Caiano PO 16 10007 403489
Calenzano FI 16 17489 420978
Vernio PO 16 6060 427038
Sambuca Pistoiese PT 17 1626 428664
Lamporecchio PT 18 7508 436172
Larciano PT 18 6394 442566
Monsummano Terme PT 18 21338 463904
Campi Bisenzio FI 18 46166 510070
Pieve a Nievole PT 19 9266 519336
Barberino di Mugello FI 19 10836 530172
Marliana PT 19 3210 533382
Vinci FI 20 14604 547986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km E of Pistoia (90315 inhabitants)
11 Km NW of Prato (191150 inhabitants)
26 Km NW of Scandicci (50609 inhabitants)
28 Km NW of Firenze (382808 inhabitants)
42 Km E of Lucca (89046 inhabitants)
55 Km E of Pisa (89158 inhabitants)
62 Km E of Viareggio (62467 inhabitants)
66 Km SW of Bologna (386663 inhabitants)
70 Km E of Massa (69479 inhabitants)
72 Km NE of Livorno (159219 inhabitants)
72 Km SW of Imola (69797 inhabitants)
74 Km E of Carrara (63133 inhabitants)
75 Km NW of Siena (53903 inhabitants)
77 Km S of Modena (184973 inhabitants)
79 Km W of Faenza (58541 inhabitants)
88 Km W of Forlì (117913 inhabitants)
88 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km NW of Arezzo (99543 inhabitants)
93 Km S of Carpi (70699 inhabitants)
96 Km E of La Spezia (93959 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 2.5
ML-VAX 1.7
1997-09-02
21:45:42
43.953 11.009 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 276709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-02 21:45:42 ± 0.232
Latitude 43.9530 ± 0.0136
Longitude 11.0090 ± 0.0182
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 276709

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) 2100.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01319
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 276709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:21:25

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 276709
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
--.BOB.Z. 1997-09-02T21:46:10.75 10.0 undecidable manual PN! 306 1.3764 2.84 0
--.ARV.Z. 1997-09-02T21:46:10.81 10.0 undecidable manual PN 107 1.4652 1.68 0.1
--.EB9.Z. 1997-09-02T21:46:06.30 10.0 undecidable manual SG 317 0.6327 0.76 0.3
--.SFI.Z. 1997-09-02T21:46:03.24 10.0 undecidable manual SG 94 0.5994 -1.2 0.1
--.CSNT.Z. 1997-09-02T21:46:01.22 10.0 undecidable manual SG 156 0.5217 -0.53 0.5
--.GU9.Z. 1997-09-02T21:46:00.58 10.0 undecidable manual SG 322 0.4995 -0.42 0.5
--.ZC9.Z. 1997-09-02T21:45:58.73 10.0 undecidable manual SG 356 0.3996 1.14 0.2
--.PII.Z. 1997-09-02T21:45:57.55 10.0 undecidable manual SG 236 0.4107 -0.81 0.3
--.EB9.Z. 1997-09-02T21:45:55.30 10.0 undecidable manual PG 317 0.6327 -0.45 1.2
--.BDI.Z. 1997-09-02T21:45:54.17 10.0 undecidable manual SG 290 0.3108 -0.22 0.6
--.CSNT.Z. 1997-09-02T21:45:54.20 10.0 undecidable manual PG 156 0.5217 0.75 0.9
--.SFI.Z. 1997-09-02T21:45:54.33 10.0 negative manual PG 94 0.5994 -0.68 1.9
--.GU9.Z. 1997-09-02T21:45:52.39 10.0 negative manual PG 322 0.4995 -0.63 2.1
--.PII.Z. 1997-09-02T21:45:51.71 10.0 positive manual PG 236 0.4107 0.21 2.9
--.ZC9.Z. 1997-09-02T21:45:51.35 10.0 undecidable manual PG 356 0.3996 0.3 1.4
--.BDI.Z. 1997-09-02T21:45:49.19 10.0 negative manual PG 290 0.3108 -0.02 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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