Earthquake with magnitude of Md 2.2 on date 28-06-1992 and time 09:20:53 (Italy) in region 2 km W Spoleto (PG)

A magnitude Md 2.2 earthquake occured in region: 2 km W Spoleto (PG), on

  • 28-06-1992 07:20:53 (UTC)
  • 28-06-1992 09:20:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7400, 12.7130 at 17 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
Spoleto PG 2 38218 38218
Castel Ritaldi PG 10 3278 41496
Sant'Anatolia di Narco PG 10 564 42060
Scheggino PG 10 461 42521
Campello sul Clitunno PG 11 2442 44963
Vallo di Nera PG 13 364 45327
Acquasparta TR 15 4778 50105
Ferentillo TR 15 1913 52018
Giano dell'Umbria PG 15 3846 55864
Trevi PG 16 8469 64333
Massa Martana PG 16 3770 68103
Montefranco TR 16 1276 69379
Montefalco PG 18 5679 75058
Arrone TR 18 2763 77821
Poggiodomo PG 18 117 77938
Cerreto di Spoleto PG 19 1075 79013
San Gemini TR 20 5018 84031

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
61 Km NE of Viterbo (67173 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
82 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
96 Km N of Roma (2864731 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 2.2
ML-VAX 1.6
1992-06-28
07:20:53
42.74 12.713 17 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 168659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-06-28 07:20:53 ± 0.4
Latitude 42.7400 ± 0.0218
Longitude 12.7130 ± 0.0517
Depth (km) 17 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 168659

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) 4870.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 210
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) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.01174
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 168659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:37:43

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 168659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SDI.Z. 1992-06-28T07:21:34.50 10.0 undecidable manual SN 141 1.2987 0.86 0.1
--.ARV.Z. 1992-06-28T07:21:19.62 10.0 undecidable manual SG 12 0.777 -0.54 0.3
--.SDI.Z. 1992-06-28T07:21:16.00 10.0 undecidable manual PN 141 1.2987 -0.57 0.6
--.AQU.Z. 1992-06-28T07:21:15.78 10.0 undecidable manual SG 127 0.6327 0.04 0.8
--.ARV.Z. 1992-06-28T07:21:09.14 10.0 undecidable manual PG 12 0.777 0.35 1.4
--.AQU.Z. 1992-06-28T07:21:06.24 10.0 undecidable manual PG 127 0.6327 0.01 2.1
--.ASS.Z. 1992-06-28T07:21:05.77 10.0 undecidable manual SG 352 0.3219 -0.11 0.8
--.ASS.Z. 1992-06-28T07:21:00.69 10.0 undecidable manual PG 352 0.3219 0.15 1.9
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