Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 04-05-1997 and time 09:23:00 (Italy) in region 2 km W Sepino (CB)

A magnitude Md 2.3 earthquake occured in region: 2 km W Sepino (CB), on

  • 04-05-1997 07:23:00 (UTC)
  • 04-05-1997 09:23:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4120, 14.5970 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.

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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
Sepino CB 2 1964 1964
Guardiaregia CB 5 801 2765
San Giuliano del Sannio CB 6 1029 3794
Sassinoro BN 7 618 4412
Cercepiccola CB 8 681 5093
Pietraroja BN 8 545 5638
Campochiaro CB 9 646 6284
Vinchiaturo CB 9 3324 9608
Morcone BN 10 4932 14540
San Polo Matese CB 10 470 15010
Cusano Mutri BN 11 4091 19101
Santa Croce del Sannio BN 12 927 20028
Cercemaggiore CB 12 3777 23805
Colle d'Anchise CB 13 807 24612
Bojano CB 13 8058 32670
Baranello CB 13 2673 35343
Mirabello Sannitico CB 13 2180 37523
Cerreto Sannita BN 15 3940 41463
Ferrazzano CB 15 3344 44807
San Lorenzello BN 16 2227 47034
Pontelandolfo BN 16 2167 49201
Busso CB 16 1273 50474
Gildone CB 16 809 51283
San Lupo BN 17 801 52084
Campobasso CB 17 49431 101515
Guardia Sanframondi BN 17 5078 106593
Spinete CB 17 1320 107913
Castelpagano BN 18 1483 109396
Gioia Sannitica CE 18 3638 113034
Faicchio BN 18 3634 116668
Campolattaro BN 18 1072 117740
San Lorenzo Maggiore BN 18 2154 119894
San Massimo CB 18 855 120749
Circello BN 19 2388 123137
Casalduni BN 19 1378 124515
San Potito Sannitico CE 19 1925 126440
Castello del Matese CE 19 1494 127934
San Gregorio Matese CE 19 988 128922
Oratino CB 20 1641 130563
Piedimonte Matese CE 20 11297 141860
Casalciprano CB 20 564 142424
Castelvenere BN 20 2562 144986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Benevento (60091 inhabitants)
43 Km NE of Caserta (76326 inhabitants)
55 Km NE of Acerra (59573 inhabitants)
58 Km N of Avellino (54857 inhabitants)
59 Km NE of Aversa (53047 inhabitants)
59 Km NE of Afragola (65057 inhabitants)
62 Km NE of Casoria (77642 inhabitants)
63 Km NE of Giugliano in Campania (122974 inhabitants)
66 Km NE of Marano di Napoli (59874 inhabitants)
68 Km N of Portici (55274 inhabitants)
70 Km NE of Napoli (974074 inhabitants)
70 Km NE of Ercolano (53709 inhabitants)
72 Km W of San Severo (53905 inhabitants)
72 Km N of Torre del Greco (86275 inhabitants)
74 Km N of Scafati (50787 inhabitants)
76 Km NE of Pozzuoli (81661 inhabitants)
79 Km W of Foggia (151991 inhabitants)
80 Km N of Cava de' Tirreni (53659 inhabitants)
80 Km N of Castellammare di Stabia (66466 inhabitants)
83 Km N of Salerno (135261 inhabitants)
95 Km NW 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 2.3 1997-05-04
07:23:00		 41.412 14.597 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 267279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-05-04 07:23:00 ± 0.157
Latitude 41.4120 ± 0.0103
Longitude 14.5970 ± 0.0113
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 267279

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) 1479.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00259
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 267279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:12:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.VTB1.Z. 1997-05-04T07:23:10.00 10.0 undecidable manual SG 173 0.222 0.36 0.3
--.PSB1.Z. 1997-05-04T07:23:10.31 10.0 undecidable manual SG 139 0.2442 0 0.6
--.RMI2.Z. 1997-05-04T07:23:07.33 10.0 undecidable manual PG 237 0.2886 0.06 1.4
--.CPI2.Z. 1997-05-04T07:23:06.81 10.0 undecidable manual PG 309 0.2664 0.12 1.3
--.PSB1.Z. 1997-05-04T07:23:06.24 10.0 undecidable manual PG 139 0.2442 0.03 1.5
--.VTB1.Z. 1997-05-04T07:23:05.50 10.0 undecidable manual PG 173 0.222 -0.32 0.9
--.SMB1.Z. 1997-05-04T07:23:05.42 10.0 undecidable manual SG 101 0.0888 0.84 0
--.SMB1.Z. 1997-05-04T07:23:02.60 10.0 negative manual PG 101 0.0888 -0.3 2
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