Earthquake with magnitude of Md 2.2 on date 07-10-1988 and time 02:23:30 (Italy) in region 4 km SE Cerreto di Spoleto (PG)

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

  • 07-10-1988 01:23:30 (UTC)
  • 07-10-1988 02:23:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.96 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
Cerreto di Spoleto PG 4 1075 1075
Vallo di Nera PG 9 364 1439
Poggiodomo PG 10 117 1556
Cascia PG 10 3217 4773
Sellano PG 10 1079 5852
Preci PG 11 724 6576
Norcia PG 11 4957 11533
Sant'Anatolia di Narco PG 12 564 12097
Scheggino PG 14 461 12558
Campello sul Clitunno PG 15 2442 15000
Monteleone di Spoleto PG 17 599 15599
Visso MC 18 1107 16706
Castelsantangelo sul Nera MC 19 281 16987
Trevi PG 19 8469 25456
Spoleto PG 19 38218 63674

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Foligno (57155 inhabitants)
37 Km NE of Terni (111501 inhabitants)
58 Km SE of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
63 Km W of Teramo (54892 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 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 2.2
ML-VAX 1.5
1988-10-07
01:23:30
42.8 12.96 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 78349
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-07 01:23:30 ± 0.062
Latitude 42.80 ± 0.00
Longitude 12.96 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 78349

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) 636.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00623
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 78349
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:13:41

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 78349
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 Takeoff_angle Residual Weight
--.ARV.Z. 1988-10-07T01:23:54.87 10.0 undecidable manual SG 359 0.0062 0.27 0.2
--.MNS.Z. 1988-10-07T01:23:47.20 10.0 undecidable manual SG 206 0.0041 -0.03 0.5
--.ALP.Z. 1988-10-07T01:23:46.60 10.0 undecidable manual SG 92 0.004 0.08 0.7
--.CIO.Z. 1988-10-07T01:23:45.70 10.0 undecidable manual SG 19 0.0037 0.14 0.6
--.ARV.Z. 1988-10-07T01:23:43.91 10.0 positive manual PG 359 0.0062 -0.41 0.3
--.ASS.Z. 1988-10-07T01:23:43.30 10.0 undecidable manual SG 319 0.0031 0.04 0.5
--.SS8.Z. 1988-10-07T01:23:41.00 10.0 undecidable manual SG 43 0.0025 -0.39 0.2
--.CIO.Z. 1988-10-07T01:23:39.10 10.0 undecidable manual PG 19 0.0037 0 2.6
--.ALP.Z. 1988-10-07T01:23:39.60 10.0 undecidable manual PG 92 0.004 -0.05 1.3
--.MNS.Z. 1988-10-07T01:23:39.91 10.0 negative manual PG 206 0.0041 -0.05 2.5
--.ASS.Z. 1988-10-07T01:23:37.90 10.0 undecidable manual PG 319 0.0031 0.13 1.1
--.SS8.Z. 1988-10-07T01:23:36.90 10.0 undecidable manual PG 43 0.0025 0.21 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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