Earthquake with magnitude of Md 2.0 on date 06-06-1991 and time 23:16:32 (Italy) in region 4 km W Potenza (PZ)

A magnitude Md 2.0 earthquake occured in region: 4 km W Potenza (PZ), on

  • 06-06-1991 21:16:32 (UTC)
  • 06-06-1991 23:16:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.6550, 15.7690 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
Potenza PZ 4 67122 67122
Pignola PZ 9 6962 74084
Avigliano PZ 9 11577 85661
Ruoti PZ 11 3579 89240
Tito PZ 11 7332 96572
Picerno PZ 11 5985 102557
Vaglio Basilicata PZ 13 2047 104604
Pietragalla PZ 14 4160 108764
Baragiano PZ 15 2671 111435
Brindisi Montagna PZ 15 908 112343
Cancellara PZ 16 1309 113652
Satriano di Lucania PZ 17 2374 116026
Abriola PZ 17 1531 117557
Filiano PZ 18 2926 120483

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km W of Potenza (67122 inhabitants)
66 Km E of Battipaglia (50786 inhabitants)
69 Km W of Altamura (70396 inhabitants)
69 Km S of Cerignola (58396 inhabitants)
70 Km W of Matera (60436 inhabitants)
78 Km SW of Andria (100440 inhabitants)
85 Km E of Salerno (135261 inhabitants)
86 Km SW of Barletta (94814 inhabitants)
87 Km E of Avellino (54857 inhabitants)
88 Km SW of Trani (56217 inhabitants)
90 Km E of Cava de' Tirreni (53659 inhabitants)
90 Km SW of Bisceglie (55422 inhabitants)
92 Km S of Foggia (151991 inhabitants)
93 Km SW of Bitonto (55540 inhabitants)
93 Km SW of Molfetta (59874 inhabitants)
98 Km SE of Benevento (60091 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 2.0 1991-06-06
21:16:32
40.655 15.769 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 142909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-06-06 21:16:32 ± 0.817
Latitude 40.6550 ± 0.0560
Longitude 15.7690 ± 0.0849
Depth (km) 15 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 142909

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) 9496.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00040
Epicentral distance of station farthest from the epicenter (degree) 0.00486
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 142909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:13:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MGR.Z. 1991-06-06T21:16:51.45 10.0 undecidable manual SG 197 0.5439 -0.59 0.2
--.SGO.Z. 1991-06-06T21:16:47.96 10.0 undecidable manual SG 254 0.3552 1.6 0
--.MGR.Z. 1991-06-06T21:16:44.29 10.0 undecidable manual PG 197 0.5439 0.44 0.8
--.SGO.Z. 1991-06-06T21:16:39.49 10.0 undecidable manual PG 254 0.3552 -1.08 0.3
--.VG9.Z. 1991-06-06T21:16:38.12 10.0 undecidable manual SG 78 0.0888 -0.6 0.4
--.PG9.Z. 1991-06-06T21:16:37.79 10.0 undecidable manual SG 121 0.0444 -0.09 0.6
--.VG9.Z. 1991-06-06T21:16:36.43 10.0 negative manual PG 78 0.0888 0.27 2.7
--.PG9.Z. 1991-06-06T21:16:35.64 10.0 positive manual PG 121 0.0444 -0.03 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