Earthquake with magnitude of Md 2.1 on date 12-07-1988 and time 01:25:18 (Italy) in region 1 km N Campello sul Clitunno (PG)

A magnitude Md 2.1 earthquake occured in region: 1 km N Campello sul Clitunno (PG), on

  • 11-07-1988 23:25:18 (UTC)
  • 12-07-1988 01:25:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8340, 12.7730 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
Campello sul Clitunno PG 2 2442 2442
Trevi PG 5 8469 10911
Castel Ritaldi PG 8 3278 14189
Vallo di Nera PG 10 364 14553
Spoleto PG 11 38218 52771
Cerreto di Spoleto PG 12 1075 53846
Montefalco PG 12 5679 59525
Sant'Anatolia di Narco PG 12 564 60089
Sellano PG 14 1079 61168
Scheggino PG 14 461 61629
Foligno PG 15 57155 118784
Giano dell'Umbria PG 16 3846 122630
Bevagna PG 17 5081 127711
Poggiodomo PG 19 117 127828
Gualdo Cattaneo PG 20 6155 133983
Spello PG 20 8645 142628

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SE of Foligno (57155 inhabitants)
32 Km NE of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
72 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
79 Km W of Teramo (54892 inhabitants)
93 Km N of Guidonia Montecelio (88673 inhabitants)
97 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
Bulletin
Rev1000
Md 2.1 1988-07-11
23:25:18
42.834 12.773 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 73149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-07-11 23:25:18 ± 0.071
Latitude 42.8340 ± 0.0038
Longitude 12.7730 ± 0.0113
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 73149

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) 1013.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00405
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 73149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:09:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1988-07-11T23:25:35.40 10.0 undecidable manual SG 188 0.444 -0.09 0.4
--.CM8.Z. 1988-07-11T23:25:35.63 10.0 undecidable manual SG 36 0.444 0.26 0.1
--.CM8.Z. 1988-07-11T23:25:28.32 10.0 positive manual PG 36 0.444 -0.13 1.7
--.MNS.Z. 1988-07-11T23:25:28.58 10.0 undecidable manual PG 188 0.444 0.06 1.2
--.ASS.Z. 1988-07-11T23:25:28.50 10.0 undecidable manual SG 338 0.2442 -0.24 0.1
--.ASS.Z. 1988-07-11T23:25:24.70 10.0 positive manual PG 338 0.2442 0.09 2.4
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