Earthquake with magnitude of Md 2.8 on date 26-02-1985 and time 04:39:42 (UTC) in region 3 km W Ricigliano (SA)

A magnitude Md 2.8 earthquake occured in region: 3 km W Ricigliano (SA), on

  • 26-02-1985 04:39:42 (UTC)
  • 26-02-1985 05:39:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.67, 15.45 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ricigliano SA 3 1144 1144
San Gregorio Magno SA 5 4286 5430
Romagnano al Monte SA 5 368 5798
Balvano PZ 6 1830 7628
Buccino SA 9 5047 12675
Muro Lucano PZ 9 5497 18172
Salvitelle SA 9 560 18732
Vietri di Potenza PZ 10 2832 21564
Bella PZ 12 5171 26735
Baragiano PZ 12 2671 29406
Caggiano SA 13 2765 32171
Castelgrande PZ 13 943 33114
Auletta SA 13 2336 35450
Palomonte SA 13 3985 39435
Savoia di Lucania PZ 14 1127 40562
Colliano SA 15 3638 44200
Pertosa SA 15 690 44890
Picerno PZ 16 5985 50875
Valva SA 17 1643 52518
Sant'Angelo Le Fratte PZ 17 1429 53947
Petina SA 17 1159 55106
Laviano SA 17 1438 56544
Sicignano degli Alburni SA 18 3519 60063
San Fele PZ 18 3004 63067
Contursi Terme SA 18 3394 66461
Polla SA 18 5279 71740
Oliveto Citra SA 18 3802 75542
Santomenna SA 18 443 75985
Pescopagano PZ 19 1910 77895
Castelnuovo di Conza SA 19 619 78514
Rapone PZ 20 990 79504
Ruoti PZ 20 3579 83083
Sant'Andrea di Conza AV 20 1539 84622

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Potenza (67122 inhabitants)
40 Km E of Battipaglia (50786 inhabitants)
58 Km E of Salerno (135261 inhabitants)
61 Km E of Avellino (54857 inhabitants)
63 Km E of Cava de' Tirreni (53659 inhabitants)
76 Km SE of Benevento (60091 inhabitants)
76 Km SW of Cerignola (58396 inhabitants)
78 Km E of Scafati (50787 inhabitants)
82 Km E of Castellammare di Stabia (66466 inhabitants)
88 Km S of Foggia (151991 inhabitants)
92 Km E of Torre del Greco (86275 inhabitants)
94 Km E of Portici (55274 inhabitants)
94 Km SW of Andria (100440 inhabitants)
94 Km E of Ercolano (53709 inhabitants)
94 Km W of Altamura (70396 inhabitants)
96 Km E of Acerra (59573 inhabitants)
97 Km W of Matera (60436 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 2.8 1985-02-26
04:39:42
40.68 15.45 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-26 04:39:42 ± 0.328
Latitude 40.68 ± 0.02
Longitude 15.45 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2559

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) 3364.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01166
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 2559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.DUI.Z. 1985-02-26T04:40:06.50 10.0 undecidable manual PN 322 0.0111 1.21 0.4
--.BRT.Z. 1985-02-26T04:40:06.20 10.0 undecidable manual PN 80 0.0117 0.02 1
--.CSI.Z. 1985-02-26T04:40:04.50 10.0 undecidable manual PN 143 0.0099 1.09 0.6
--.BAI.Z. 1985-02-26T04:40:03.50 10.0 undecidable manual PN 67 0.0104 -0.79 0.6
--.ORI.Z. 1985-02-26T04:40:03.00 10.0 undecidable manual PG 129 0.0087 1.44 0.4
--.BS1.Z. 1985-02-26T04:40:01.00 10.0 undecidable manual SG 281 0.0043 1.22 0.2
--.MMN.Z. 1985-02-26T04:39:58.60 10.0 undecidable manual PG 152 0.0079 -1.21 0.5
--.SOR.Z. 1985-02-26T04:39:57.20 10.0 undecidable manual PG 263 0.0076 -1.97 0.1
--.TR9.Z. 1985-02-26T04:39:57.50 10.0 undecidable manual SG 335 0.0036 0.23 0.5
--.BS1.Z. 1985-02-26T04:39:52.30 10.0 positive manual PG 281 0.0043 -0.09 2.7
--.TR9.Z. 1985-02-26T04:39:50.80 10.0 positive manual PG 335 0.0036 -0.14 2.6
--.SGO.Z. 1985-02-26T04:39:49.50 10.0 undecidable manual SG 223 0.0014 0.21 0.7
--.SGO.Z. 1985-02-26T04:39:46.20 10.0 positive manual PG 223 0.0014 -0.13 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download