Earthquake with magnitude of Md 2.6 on date 30-05-1988 and time 04:39:49 (Italy) in region 8 km SW Valle Castellana (TE)

A magnitude Md 2.6 earthquake occured in region: 8 km SW Valle Castellana (TE), on

  • 30-05-1988 02:39:49 (UTC)
  • 30-05-1988 04:39:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 13.43 at 5 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
Valle Castellana TE 8 977 977
Rocca Santa Maria TE 8 537 1514
Acquasanta Terme AP 9 2916 4430
Cortino TE 10 656 5086
Amatrice RI 13 2657 7743
Arquata del Tronto AP 14 1178 8921
Accumoli RI 15 667 9588
Campotosto AQ 15 542 10130
Crognaleto TE 16 1297 11427
Fano Adriano TE 18 296 11723
Montegallo AP 19 523 12246
Torricella Sicura TE 19 2641 14887
Roccafluvione AP 20 2010 16897

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km W of Teramo (54892 inhabitants)
37 Km N of L'Aquila (69753 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
65 Km E of Terni (111501 inhabitants)
66 Km E of Foligno (57155 inhabitants)
69 Km W of Pescara (121014 inhabitants)
71 Km NW of Chieti (51815 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km E of Perugia (166134 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 2.6 1988-05-30
02:39:49
42.69 13.43 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 70489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-05-30 02:39:49 ± 0.151
Latitude 42.69 ± 0.01
Longitude 13.43 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 70489

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) 1473.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.01279
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 70489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:06:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AM8.Z. 1988-05-30T02:40:22.40 10.0 undecidable manual SG 8 0.0078 1.5 0
--.ARV.Z. 1988-05-30T02:40:21.50 10.0 undecidable manual SG 336 0.0079 0.53 0.4
--.CRE.Z. 1988-05-30T02:40:17.00 10.0 undecidable manual PN 311 0.0128 0.93 0.3
--.ASS.Z. 1988-05-30T02:40:15.00 10.0 undecidable manual SG 303 0.0061 0.61 0.4
--.MNS.Z. 1988-05-30T02:40:13.50 10.0 undecidable manual SG 241 0.0056 0.85 0.2
--.CM8.Z. 1988-05-30T02:40:10.24 10.0 undecidable manual SG 338 0.0049 0.07 0.8
--.SDI.Z. 1988-05-30T02:40:10.50 10.0 undecidable manual PG 163 0.0091 0.3 1.3
--.AM8.Z. 1988-05-30T02:40:07.10 10.0 undecidable manual PG 8 0.0078 -0.49 1.1
--.ARV.Z. 1988-05-30T02:40:07.50 10.0 undecidable manual PG 336 0.0079 -0.25 1.5
--.ASS.Z. 1988-05-30T02:40:03.50 10.0 undecidable manual PG 303 0.0061 -0.45 1.4
--.SS8.Z. 1988-05-30T02:40:02.79 10.0 undecidable manual SG 336 0.0032 -0.53 0.5
--.AQU.Z. 1988-05-30T02:40:02.50 10.0 undecidable manual SG 183 0.0029 -0.12 0.8
--.MNS.Z. 1988-05-30T02:40:02.50 10.0 undecidable manual PG 241 0.0056 -0.45 1.5
--.CM8.Z. 1988-05-30T02:40:00.75 10.0 undecidable manual PG 338 0.0049 -0.76 0.8
--.AQU.Z. 1988-05-30T02:39:57.00 10.0 undecidable manual PG 183 0.0029 -0.16 2
--.SS8.Z. 1988-05-30T02:39:57.51 10.0 undecidable manual PG 336 0.0032 -0.05 2
--.ALP.Z. 1988-05-30T02:39:55.36 10.0 undecidable manual SG 47 0.0012 0.01 0.8
--.ALP.Z. 1988-05-30T02:39:53.40 10.0 undecidable manual PG 47 0.0012 0.08 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download