Earthquake with magnitude of Md 2.1 on date 26-10-1988 and time 13:26:37 (UTC) in region 2 km NE Ciampino (RM)

A magnitude Md 2.1 earthquake occured in region: 2 km NE Ciampino (RM), on

  • 26-10-1988 13:26:37 (UTC)
  • 26-10-1988 14:26:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8180, 12.6250 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
Ciampino RM 2 38412 38412
Grottaferrata RM 5 20327 58739
Frascati RM 5 22087 80826
Marino RM 6 43026 123852
Monte Porzio Catone RM 8 8693 132545
Castel Gandolfo RM 8 8997 141542
Rocca di Papa RM 9 17034 158576
Monte Compatri RM 9 11978 170554
Albano Laziale RM 10 41715 212269
Colonna RM 11 4287 216556
Ariccia RM 12 19407 235963
Rocca Priora RM 12 11962 247925
Nemi RM 13 1943 249868
Genzano di Roma RM 14 23970 273838
Roma RM 14 2864731 3138569
San Cesareo RM 15 15153 3153722
Lanuvio RM 17 13632 3167354
Zagarolo RM 17 17843 3185197
Gallicano nel Lazio RM 18 6334 3191531
Pomezia RM 19 62966 3254497
Velletri RM 19 53303 3307800
Lariano RM 20 13432 3321232
Fonte Nuova RM 20 32562 3353794

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SE of Roma (2864731 inhabitants)
19 Km NE of Pomezia (62966 inhabitants)
19 Km NW of Velletri (53303 inhabitants)
22 Km SW of Tivoli (56533 inhabitants)
22 Km SW of Guidonia Montecelio (88673 inhabitants)
25 Km N of Aprilia (73446 inhabitants)
33 Km E of Fiumicino (78395 inhabitants)
41 Km N of Anzio (54211 inhabitants)
45 Km NW of Latina (125985 inhabitants)
75 Km E of Civitavecchia (52991 inhabitants)
79 Km SE of Viterbo (67173 inhabitants)
83 Km S of Terni (111501 inhabitants)
87 Km SW of L'Aquila (69753 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 1988-10-26
13:26:37
41.818 12.625 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 79839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-26 13:26:37 ± 0.362
Latitude 41.8180 ± 0.0136
Longitude 12.6250 ± 0.0416
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 79839

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) 3759.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 233
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00510
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 79839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:15:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1988-10-26T13:26:59.00 10.0 undecidable manual SG 4 0.5661 0.12 0.5
--.MNS.Z. 1988-10-26T13:26:50.00 10.0 undecidable manual PG 4 0.5661 0.04 1.4
--.RDP.Z. 1988-10-26T13:26:42.00 10.0 undecidable manual SG 130 0.0888 0.34 0.2
--.RDP.Z. 1988-10-26T13:26:40.00 10.0 undecidable manual PG 130 0.0888 -0.02 2.2
--.RMP.Z. 1988-10-26T13:26:39.90 10.0 undecidable manual PG 96 0.0555 -0.31 0.6
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