Earthquake with magnitude of Md 2.3 on date 06-06-1988 and time 06:12:02 (Italy) in region 7 km E Massa Martana (PG)

A magnitude Md 2.3 earthquake occured in region: 7 km E Massa Martana (PG), on

  • 06-06-1988 04:12:02 (UTC)
  • 06-06-1988 06:12:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7770, 12.6040 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
Massa Martana PG 7 3770 3770
Giano dell'Umbria PG 7 3846 7616
Castel Ritaldi PG 8 3278 10894
Acquasparta TR 11 4778 15672
Spoleto PG 12 38218 53890
Montefalco PG 14 5679 59569
Campello sul Clitunno PG 15 2442 62011
Gualdo Cattaneo PG 15 6155 68166
Todi PG 16 16851 85017
Trevi PG 16 8469 93486
Montecastrilli TR 17 5022 98508
Bevagna PG 18 5081 103589
San Gemini TR 19 5018 108607
Collazzone PG 19 3473 112080
Avigliano Umbro TR 20 2558 114638
Sant'Anatolia di Narco PG 20 564 115202
Scheggino PG 20 461 115663

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Foligno (57155 inhabitants)
24 Km N of Terni (111501 inhabitants)
41 Km SE of Perugia (166134 inhabitants)
57 Km NE of Viterbo (67173 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km W of Teramo (54892 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
97 Km SE of Arezzo (99543 inhabitants)
99 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 2.3 1988-06-06
04:12:02
42.777 12.604 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 71159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-06-06 04:12:02 ± 0.074
Latitude 42.7770 ± 0.0039
Longitude 12.6040 ± 0.0184
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 71159

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) 1562.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00866
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 71159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:07:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CRE.Z. 1988-06-06T04:12:22.00 10.0 undecidable manual PG 330 0.9657 0.03 1.4
--.MNS.Z. 1988-06-06T04:12:17.81 10.0 undecidable manual SG 171 0.3996 0.26 0.1
--.ASS.Z. 1988-06-06T04:12:14.24 10.0 undecidable manual SG 7 0.2775 0.16 0.4
--.MNS.Z. 1988-06-06T04:12:11.25 10.0 undecidable manual PG 171 0.3996 -0.12 1.4
--.ASS.Z. 1988-06-06T04:12:09.28 10.0 undecidable manual PG 7 0.2775 -0.09 1.7
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