Earthquake with magnitude of Md 3.2 on date 12-05-1997 and time 20:54:11 (Italy) in region 4 km NW Castel Sant'Angelo (RI)

A magnitude Md 3.2 earthquake occured in region: 4 km NW Castel Sant'Angelo (RI), on

  • 12-05-1997 18:54:11 (UTC)
  • 12-05-1997 20:54:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.42, 12.99 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
Castel Sant'Angelo RI 4 1308 1308
Cittaducale RI 5 6828 8136
Borgo Velino RI 6 972 9108
Micigliano RI 7 127 9235
Antrodoco RI 8 2588 11823
Cantalice RI 9 2755 14578
Concerviano RI 11 291 14869
Rieti RI 11 47698 62567
Poggio Bustone RI 13 2055 64622
Belmonte in Sabina RI 14 636 65258
Posta RI 15 694 65952
Petrella Salto RI 15 1197 67149
Rivodutri RI 16 1253 68402
Borbona RI 16 617 69019
Leonessa RI 16 2435 71454
Longone Sabino RI 16 597 72051
Rocca Sinibalda RI 17 815 72866
Morro Reatino RI 18 373 73239
Contigliano RI 18 3783 77022
Greccio RI 19 1558 78580
Colli sul Velino RI 19 533 79113
Labro RI 20 374 79487
Cagnano Amiterno AQ 20 1369 80856
Varco Sabino RI 20 187 81043
Torricella in Sabina RI 20 1342 82385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SE of Terni (111501 inhabitants)
34 Km W of L'Aquila (69753 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
53 Km NE of Tivoli (56533 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
64 Km W of Teramo (54892 inhabitants)
72 Km NE of Roma (2864731 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
83 Km N of Velletri (53303 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
95 Km NE of Fiumicino (78395 inhabitants)
96 Km N of Aprilia (73446 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
97 Km W of Chieti (51815 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 3.2
ML-VAX 2.5
1997-05-12
18:54:11
42.42 12.99 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 268019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-05-12 18:54:11 ± 0.218
Latitude 42.42 ± 0.02
Longitude 12.99 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 268019

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) 2436
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.03756
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 268019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:13:23

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 268019
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
--.FVI.Z. 1997-05-12T18:55:16.47 10.0 undecidable manual PN 357 0.0376 1.16 0.4
--.RFI.Z. 1997-05-12T18:54:57.34 10.0 undecidable manual SN! 145 0.0121 2.48 0
--.FB9.Z. 1997-05-12T18:54:54.00 10.0 undecidable manual SN 352 0.0115 0.52 0.5
--.MU9.Z. 1997-05-12T18:54:53.89 10.0 undecidable manual PN 130 0.0224 1.63 0.3
--.BDI.Z. 1997-05-12T18:54:51.80 10.0 undecidable manual PN 313 0.0215 0.94 0.7
--.ARV.Z. 1997-05-12T18:54:49.00 10.0 undecidable manual SN 358 0.0097 0.33 0.6
--.SDI.Z. 1997-05-12T18:54:45.34 10.0 undecidable manual SG 138 0.0083 1.33 0.3
--.SFI.Z. 1997-05-12T18:54:41.43 10.0 undecidable manual PN 330 0.0153 0.08 1.3
--.RSM.Z. 1997-05-12T18:54:41.20 10.0 undecidable manual PN 345 0.014 1.81 0.3
--.RFI.Z. 1997-05-12T18:54:37.58 10.0 undecidable manual PN 145 0.0121 1.19 0.8
--.DUI.Z. 1997-05-12T18:54:36.00 10.0 undecidable manual PN 124 0.0119 -0.22 1.5
--.RMP.Z. 1997-05-12T18:54:34.71 10.0 undecidable manual SG 199 0.0057 0.02 0.6
--.FB9.Z. 1997-05-12T18:54:34.59 10.0 undecidable manual PN 352 0.0115 -0.99 1
--.ARV.Z. 1997-05-12T18:54:33.00 10.0 undecidable manual PN 358 0.0097 0.19 1.5
--.PQ9.Z. 1997-05-12T18:54:30.00 10.0 undecidable manual SG 142 0.0045 -0.05 0.9
--.SDI.Z. 1997-05-12T18:54:30.60 10.0 undecidable manual PG 138 0.0083 -0.06 1.6
--.ASS.Z. 1997-05-12T18:54:23.79 10.0 positive manual PG 338 0.0062 -1.79 0.7
--.RMP.Z. 1997-05-12T18:54:23.81 10.0 undecidable manual PG 199 0.0057 -0.92 1.1
--.AQU.Z. 1997-05-12T18:54:22.50 10.0 undecidable manual SG 101 0.0028 -0.74 0.7
--.PQ9.Z. 1997-05-12T18:54:20.54 10.0 undecidable manual PG 142 0.0045 -1.52 0.5
--.AQU.Z. 1997-05-12T18:54:17.50 10.0 negative manual PG 101 0.0028 -0.63 2.6
--.MNS.Z. 1997-05-12T18:54:16.47 10.0 negative manual PG 261 0.002 0.09 3.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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