Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.1 on date 02-04-1997 and time 22:44:47 (Italy) in region 2 km SE Sepino (CB)

A magnitude Md 2.1 earthquake occured in region: 2 km SE Sepino (CB), on

  • 02-04-1997 20:44:47 (UTC)
  • 02-04-1997 22:44:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.3940, 14.6370 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.

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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
Sassinoro BN 3 618 2582
Morcone BN 6 4932 7514
San Giuliano del Sannio CB 7 1029 8543
Cercepiccola CB 8 681 9224
Santa Croce del Sannio BN 8 927 10151
Pietraroja BN 9 545 10696
Guardiaregia CB 9 801 11497
Cercemaggiore CB 10 3777 15274
Vinchiaturo CB 12 3324 18598
Cusano Mutri BN 12 4091 22689
Campochiaro CB 13 646 23335
Pontelandolfo BN 13 2167 25502
Mirabello Sannitico CB 14 2180 27682
Cerreto Sannita BN 14 3940 31622
San Polo Matese CB 14 470 32092
Campolattaro BN 14 1072 33164
Castelpagano BN 14 1483 34647
San Lupo BN 15 801 35448
Circello BN 15 2388 37836
San Lorenzello BN 15 2227 40063
Guardia Sanframondi BN 16 5078 45141
Gildone CB 16 809 45950
Casalduni BN 16 1378 47328
Ferrazzano CB 16 3344 50672
San Lorenzo Maggiore BN 16 2154 52826
Colle d'Anchise CB 16 807 53633
Baranello CB 16 2673 56306
Colle Sannita BN 17 2431 58737
Bojano CB 17 8058 66795
Faicchio BN 18 3634 70429
Campobasso CB 18 49431 119860
Busso CB 19 1273 121133
Castelvenere BN 19 2562 123695
Gioia Sannitica CE 19 3638 127333
Reino BN 19 1210 128543
Jelsi CB 19 1781 130324
Fragneto l'Abate BN 20 1049 131373
Fragneto Monforte BN 20 1840 133213
Riccia CB 20 5262 138475

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Benevento (60091 inhabitants)
44 Km NE of Caserta (76326 inhabitants)
54 Km NE of Acerra (59573 inhabitants)
55 Km N of Avellino (54857 inhabitants)
59 Km NE of Aversa (53047 inhabitants)
59 Km NE of Afragola (65057 inhabitants)
61 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 NE of Portici (55274 inhabitants)
69 Km NE of Ercolano (53709 inhabitants)
70 Km NE of Napoli (974074 inhabitants)
70 Km W of San Severo (53905 inhabitants)
71 Km NE of Torre del Greco (86275 inhabitants)
72 Km N of Scafati (50787 inhabitants)
76 Km W of Foggia (151991 inhabitants)
76 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 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 2.1 1997-04-02
20:44:47		 41.394 14.637 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 264719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-04-02 20:44:47 ± 0.29
Latitude 41.3940 ± 0.0242
Longitude 14.6370 ± 0.0216
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 264719

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) 3241.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00324
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 264719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:10:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MRB1.Z. 1997-04-02T20:45:02.70 10.0 undecidable manual SG 137 0.3552 0.9 0.4
--.CPI2.Z. 1997-04-02T20:45:00.00 10.0 undecidable manual SG 308 0.2997 0.84 0.4
--.RMI2.Z. 1997-04-02T20:44:59.12 10.0 undecidable manual SG 243 0.3108 -0.32 0.7
--.MRB1.Z. 1997-04-02T20:44:56.16 10.0 undecidable manual PG 137 0.3552 0.79 1.1
--.RMI2.Z. 1997-04-02T20:44:54.60 10.0 undecidable manual PG 243 0.3108 -0.3 1.9
--.CPI2.Z. 1997-04-02T20:44:54.42 10.0 undecidable manual PG 308 0.2997 0.22 2
--.SMB1.Z. 1997-04-02T20:44:51.27 10.0 undecidable manual SG 89 0.0555 -0.35 0.9
--.SMB1.Z. 1997-04-02T20:44:48.39 10.0 undecidable manual PG 89 0.0555 -1.46 0.6
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