Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 20-03-1997 and time 12:14:31 (Italy) in region 2 km N Sassinoro (BN)

A magnitude Md 2.5 earthquake occured in region: 2 km N Sassinoro (BN), on

  • 20-03-1997 11:14:31 (UTC)
  • 20-03-1997 12:14:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.3950, 14.6600 at 12 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sassinoro BN 2 618 618
Sepino CB 4 1964 2582
Morcone BN 6 4932 7514
Santa Croce del Sannio BN 6 927 8441
San Giuliano del Sannio CB 7 1029 9470
Cercepiccola CB 7 681 10151
Cercemaggiore CB 9 3777 13928
Pietraroja BN 11 545 14473
Guardiaregia CB 11 801 15274
Pontelandolfo BN 12 2167 17441
Castelpagano BN 12 1483 18924
Vinchiaturo CB 13 3324 22248
Circello BN 13 2388 24636
Campolattaro BN 13 1072 25708
Mirabello Sannitico CB 14 2180 27888
Cusano Mutri BN 14 4091 31979
Campochiaro CB 14 646 32625
Gildone CB 15 809 33434
Colle Sannita BN 15 2431 35865
Cerreto Sannita BN 15 3940 39805
San Lupo BN 15 801 40606
Ferrazzano CB 15 3344 43950
Casalduni BN 15 1378 45328
San Polo Matese CB 16 470 45798
Guardia Sanframondi BN 16 5078 50876
San Lorenzo Maggiore BN 16 2154 53030
San Lorenzello BN 16 2227 55257
Baranello CB 17 2673 57930
Colle d'Anchise CB 17 807 58737
Reino BN 18 1210 59947
Jelsi CB 18 1781 61728
Riccia CB 18 5262 66990
Campobasso CB 18 49431 116421
Bojano CB 19 8058 124479
Fragneto l'Abate BN 19 1049 125528
Fragneto Monforte BN 19 1840 127368
Busso CB 20 1273 128641
Campodipietra CB 20 2570 131211
Faicchio BN 20 3634 134845
Castelvenere BN 20 2562 137407

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Benevento (60091 inhabitants)
45 Km NE of Caserta (76326 inhabitants)
55 Km N of Avellino (54857 inhabitants)
55 Km NE of Acerra (59573 inhabitants)
60 Km NE of Afragola (65057 inhabitants)
60 Km NE of Aversa (53047 inhabitants)
63 Km NE of Casoria (77642 inhabitants)
64 Km NE of Giugliano in Campania (122974 inhabitants)
68 Km NE of Marano di Napoli (59874 inhabitants)
68 Km W of San Severo (53905 inhabitants)
68 Km NE of Portici (55274 inhabitants)
70 Km NE of Ercolano (53709 inhabitants)
71 Km NE of Napoli (974074 inhabitants)
72 Km NE of Torre del Greco (86275 inhabitants)
73 Km N of Scafati (50787 inhabitants)
74 Km W of Foggia (151991 inhabitants)
77 Km NE of Pozzuoli (81661 inhabitants)
77 Km N of Cava de' Tirreni (53659 inhabitants)
79 Km N of Castellammare di Stabia (66466 inhabitants)
80 Km N of Salerno (135261 inhabitants)
92 Km N of Battipaglia (50786 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 1.5 		1997-03-20
11:14:31		 41.395 14.66 12 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 262909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-03-20 11:14:31 ± 0.153
Latitude 41.3950 ± 0.0106
Longitude 14.6600 ± 0.0139
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 262909

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) 1654.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00907
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 262909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:08:43

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 262909
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
--.FG3.Z. 1997-03-20T11:14:50.89 10.0 undecidable manual PN 71 1.0101 -0.26 1
--.SGO.Z. 1997-03-20T11:14:50.89 10.0 undecidable manual PG 149 0.9657 0.37 0.9
--.SDI.Z. 1997-03-20T11:14:45.59 10.0 undecidable manual PG 296 0.6993 -0.13 1.4
--.RMI2.Z. 1997-03-20T11:14:44.38 10.0 undecidable manual SG 244 0.3219 0.36 0.6
--.CI9.Z. 1997-03-20T11:14:44.36 10.0 undecidable manual PG 152 0.5883 0.65 0.8
--.CPI2.Z. 1997-03-20T11:14:44.11 10.0 undecidable manual SG 306 0.3108 0.46 0.6
--.RFI.Z. 1997-03-20T11:14:43.11 10.0 undecidable manual PG 259 0.5106 0.97 0.3
--.VTB1.Z. 1997-03-20T11:14:40.10 10.0 undecidable manual SG 186 0.2109 -0.3 0.7
--.PSB1.Z. 1997-03-20T11:14:40.45 10.0 undecidable manual SG 146 0.1998 0.36 0.6
--.MRB1.Z. 1997-03-20T11:14:39.32 10.0 undecidable manual PG 139 0.3552 0.1 2
--.RMI2.Z. 1997-03-20T11:14:38.19 10.0 undecidable manual PG 244 0.3219 -0.52 1.3
--.DUI.Z. 1997-03-20T11:14:38.57 10.0 undecidable manual PG 330 0.2997 0.34 1.6
--.CPI2.Z. 1997-03-20T11:14:37.90 10.0 undecidable manual PG 306 0.3108 -0.6 1.1
--.PSB1.Z. 1997-03-20T11:14:36.38 10.0 undecidable manual PG 146 0.1998 -0.07 2
--.SMB1.Z. 1997-03-20T11:14:36.45 10.0 undecidable manual SG 90 0.0333 0.49 0.5
--.VTB1.Z. 1997-03-20T11:14:35.50 10.0 undecidable manual PG 186 0.2109 -1.07 0.3
--.SMB1.Z. 1997-03-20T11:14:33.58 10.0 undecidable manual PG 90 0.0333 -0.48 1.3
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