Earthquake with magnitude of Md 2.2 on date 21-03-2002 and time 01:09:09 (Italy) in region 4 km E Cerreto di Spoleto (PG)

A magnitude Md 2.2 earthquake occured in region: 4 km E Cerreto di Spoleto (PG), on

  • 21-03-2002 00:09:09 (UTC)
  • 21-03-2002 01:09:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8280, 12.9590 at 19 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
Cerreto di Spoleto PG 4 1075 1075
Sellano PG 7 1079 2154
Preci PG 9 724 2878
Vallo di Nera PG 10 364 3242
Norcia PG 12 4957 8199
Cascia PG 13 3217 11416
Poggiodomo PG 13 117 11533
Sant'Anatolia di Narco PG 14 564 12097
Campello sul Clitunno PG 15 2442 14539
Visso MC 16 1107 15646
Scheggino PG 16 461 16107
Castelsantangelo sul Nera MC 18 281 16388
Trevi PG 18 8469 24857
Monte Cavallo MC 19 145 25002
Monteleone di Spoleto PG 20 599 25601
Ussita MC 20 444 26045

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
99 Km SW of Ancona (100861 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 2002-03-21
00:09:09
42.828 12.959 19 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 437849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-03-21 00:09:09 ± 0.165
Latitude 42.8280 ± 0.0047
Longitude 12.9590 ± 0.0096
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 437849

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) 945.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00437
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 437849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:53:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 2002-03-21T00:09:27.93 10.0 undecidable manual SG 204 0.4884 0.27 0.2
--.SNTG.Z. 2002-03-21T00:09:25.60 10.0 undecidable manual SG 358 0.4218 -0.12 0.6
--.ASS.Z. 2002-03-21T00:09:22.55 10.0 undecidable manual SG 316 0.3219 -0.02 0.9
--.SNTG.Z. 2002-03-21T00:09:19.20 10.0 undecidable manual PG 358 0.4218 0.04 2
--.MNS.Z. 2002-03-21T00:09:19.87 10.0 undecidable manual PG 204 0.4884 -0.23 0.7
--.ASS.Z. 2002-03-21T00:09:17.22 10.0 undecidable manual PG 316 0.3219 0.05 2.2
--.NRCA.Z. 2002-03-21T00:09:16.74 10.0 undecidable manual SG 87 0.111 -0.26 0.3
--.NRCA.Z. 2002-03-21T00:09:14.14 10.0 undecidable manual PG 87 0.111 0.19 1.2
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