Earthquake with magnitude of Md 2.1 on date 20-03-1997 and time 23:26:16 (Italy) in region 3 km NE Sassinoro (BN)

A magnitude Md 2.1 earthquake occured in region: 3 km NE Sassinoro (BN), on

  • 20-03-1997 22:26:16 (UTC)
  • 20-03-1997 23:26:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.3980, 14.6730 at 15 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
Sassinoro BN 3 618 618
Sepino CB 5 1964 2582
Santa Croce del Sannio BN 5 927 3509
Morcone BN 6 4932 8441
Cercepiccola CB 7 681 9122
San Giuliano del Sannio CB 7 1029 10151
Cercemaggiore CB 8 3777 13928
Castelpagano BN 11 1483 15411
Pietraroja BN 12 545 15956
Guardiaregia CB 12 801 16757
Pontelandolfo BN 12 2167 18924
Circello BN 12 2388 21312
Vinchiaturo CB 13 3324 24636
Campolattaro BN 13 1072 25708
Mirabello Sannitico CB 13 2180 27888
Gildone CB 14 809 28697
Colle Sannita BN 14 2431 31128
Ferrazzano CB 15 3344 34472
Campochiaro CB 15 646 35118
Cusano Mutri BN 15 4091 39209
Casalduni BN 15 1378 40587
San Lupo BN 16 801 41388
Cerreto Sannita BN 16 3940 45328
San Polo Matese CB 16 470 45798
Guardia Sanframondi BN 17 5078 50876
San Lorenzo Maggiore BN 17 2154 53030
Riccia CB 17 5262 58292
Jelsi CB 17 1781 60073
Reino BN 17 1210 61283
Baranello CB 17 2673 63956
San Lorenzello BN 17 2227 66183
Campobasso CB 18 49431 115614
Colle d'Anchise CB 18 807 116421
Fragneto l'Abate BN 18 1049 117470
Fragneto Monforte BN 18 1840 119310
Campodipietra CB 19 2570 121880
Bojano CB 19 8058 129938
Busso CB 20 1273 131211

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Benevento (60091 inhabitants)
46 Km NE of Caserta (76326 inhabitants)
55 Km N of Avellino (54857 inhabitants)
56 Km NE of Acerra (59573 inhabitants)
61 Km NE of Afragola (65057 inhabitants)
61 Km NE of Aversa (53047 inhabitants)
63 Km NE of Casoria (77642 inhabitants)
65 Km NE of Giugliano in Campania (122974 inhabitants)
67 Km W of San Severo (53905 inhabitants)
69 Km NE of Marano di Napoli (59874 inhabitants)
69 Km NE of Portici (55274 inhabitants)
71 Km NE of Ercolano (53709 inhabitants)
71 Km NE of Napoli (974074 inhabitants)
73 Km NE of Torre del Greco (86275 inhabitants)
73 Km W of Foggia (151991 inhabitants)
73 Km N of Scafati (50787 inhabitants)
78 Km N of Cava de' Tirreni (53659 inhabitants)
78 Km NE of Pozzuoli (81661 inhabitants)
80 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 2.1 1997-03-20
22:26:16
41.398 14.673 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 263029
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-03-20 22:26:16 ± 0.342
Latitude 41.3980 ± 0.0103
Longitude 14.6730 ± 0.0224
Depth (km) 15 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 263029

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) 2188.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00024
Epicentral distance of station farthest from the epicenter (degree) 0.00639
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 263029
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:08:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.RMI2.Z. 1997-03-20T22:26:30.11 10.0 undecidable manual SG 244 0.333 0.81 0.2
--.CPI2.Z. 1997-03-20T22:26:29.90 10.0 undecidable manual SG 305 0.3219 0.29 0.6
--.SDI.Z. 1997-03-20T22:26:29.92 10.0 undecidable manual PG 296 0.7104 -0.77 0.3
--.DUI.Z. 1997-03-20T22:26:28.80 10.0 undecidable manual SG 328 0.3108 0.56 0.3
--.VTB1.Z. 1997-03-20T22:26:25.56 10.0 undecidable manual SG 188 0.2109 0.02 0.9
--.PSB1.Z. 1997-03-20T22:26:25.35 10.0 undecidable manual SG 149 0.1998 0.2 0.8
--.DUI.Z. 1997-03-20T22:26:23.58 10.0 undecidable manual PG 328 0.3108 0.39 1.4
--.RMI2.Z. 1997-03-20T22:26:23.90 10.0 undecidable manual PG 244 0.333 0.1 1.9
--.CPI2.Z. 1997-03-20T22:26:23.60 10.0 undecidable manual PG 305 0.3219 -0.45 1.3
--.VTB1.Z. 1997-03-20T22:26:21.12 10.0 undecidable manual PG 188 0.2109 -0.52 1.1
--.PSB1.Z. 1997-03-20T22:26:21.85 10.0 undecidable manual PG 149 0.1998 0.45 1.4
--.SMB1.Z. 1997-03-20T22:26:21.18 10.0 undecidable manual SG 96 0.0222 -0.3 0.7
--.SMB1.Z. 1997-03-20T22:26:19.20 10.0 undecidable manual PG 96 0.0222 -0.08 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download