Earthquake with magnitude of Md 3.1 on date 06-04-1985 and time 03:27:40 (Italy) in region 4 km W Pescorocchiano (RI)

A magnitude Md 3.1 earthquake occured in region: 4 km W Pescorocchiano (RI), on

  • 06-04-1985 01:27:40 (UTC)
  • 06-04-1985 03:27:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.22, 13.11 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
Pescorocchiano RI 4 2075 2075
Marcetelli RI 5 89 2164
Fiamignano RI 5 1413 3577
Varco Sabino RI 8 187 3764
Collegiove RI 8 213 3977
Nespolo RI 8 246 4223
Petrella Salto RI 9 1197 5420
Ascrea RI 9 234 5654
Paganico Sabino RI 10 172 5826
Collalto Sabino RI 10 442 6268
Borgorose RI 11 4591 10859
Castel di Tora RI 12 288 11147
Turania RI 12 241 11388
Longone Sabino RI 13 597 11985
Colle di Tora RI 13 372 12357
Pozzaglia Sabina RI 13 360 12717
Carsoli AQ 14 5396 18113
Sante Marie AQ 15 1166 19279
Concerviano RI 15 291 19570
Vivaro Romano RM 16 182 19752
Rocca Sinibalda RI 16 815 20567
Orvinio RI 17 405 20972
Vallinfreda RM 18 283 21255
Pereto AQ 18 682 21937
Tornimparte AQ 18 3187 25124
Poggio Moiano RI 19 2751 27875
Riofreddo RM 20 781 28656
Oricola AQ 20 1244 29900

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of L'Aquila (69753 inhabitants)
38 Km NE of Tivoli (56533 inhabitants)
40 Km NE of Guidonia Montecelio (88673 inhabitants)
54 Km SE of Terni (111501 inhabitants)
63 Km NE of Roma (2864731 inhabitants)
65 Km NE of Velletri (53303 inhabitants)
69 Km SW of Teramo (54892 inhabitants)
79 Km NE of Pomezia (62966 inhabitants)
79 Km NE of Aprilia (73446 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
85 Km N of Latina (125985 inhabitants)
87 Km NE of Fiumicino (78395 inhabitants)
88 Km SE of Foligno (57155 inhabitants)
89 Km W of Chieti (51815 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Anzio (54211 inhabitants)
95 Km W of Pescara (121014 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 3.1 1985-04-06
01:27:40
42.22 13.11 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-06 01:27:40 ± 0.231
Latitude 42.22 ± 0.01
Longitude 13.11 ± 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 4099

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) 2314
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.03934
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 4099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-06T01:29:28.50 10.0 undecidable manual SN? 345 0.0357 2.04 0
--.FO1.Z. 1985-04-06T01:28:49.00 10.0 undecidable manual PN 357 0.0393 1.74 0.2
--.RBL.Z. 1985-04-06T01:28:46.00 10.0 undecidable manual PN 4 0.038 0.75 0.6
--.CTI.Z. 1985-04-06T01:28:43.50 10.0 undecidable manual PN 345 0.0357 1.9 0.1
--.TRI.Z. 1985-04-06T01:28:35.50 10.0 undecidable manual PN 7 0.0317 0.03 0.9
--.CH1.Z. 1985-04-06T01:28:32.50 10.0 undecidable manual SN 329 0.0147 1.27 0.4
--.AR1.Z. 1985-04-06T01:28:22.50 10.0 undecidable manual SN 354 0.0115 -0.19 0.6
--.DUI.Z. 1985-04-06T01:28:19.00 10.0 undecidable manual SN 118 0.0103 -0.51 0.5
--.PRG.Z. 1985-04-06T01:28:18.00 10.0 undecidable manual SG? 329 0.0091 1.93 0
--.AS1.Z. 1985-04-06T01:28:12.00 10.0 undecidable manual SG 338 0.0081 -0.28 0.6
--.CH1.Z. 1985-04-06T01:28:11.00 10.0 undecidable manual PN 329 0.0147 1.29 0.6
--.AM1.Z. 1985-04-06T01:28:07.10 10.0 undecidable manual PN 15 0.0124 1.02 1.8
--.SD1.Z. 1985-04-06T01:28:07.50 10.0 undecidable manual SG 134 0.0066 0.87 0.4
--.AR1.Z. 1985-04-06T01:28:04.00 10.0 undecidable manual PN 354 0.0115 -0.78 1.1
--.ALP.Z. 1985-04-06T01:28:04.20 10.0 undecidable manual SG 31 0.0058 -0.01 0.9
--.DUI.Z. 1985-04-06T01:28:03.80 10.0 undecidable manual PN 118 0.0103 0.85 1.1
--.RDP.Z. 1985-04-06T01:28:03.00 10.0 undecidable manual SG 212 0.0049 2.33 0
--.RMP.N. 1985-04-06T01:28:01.00 10.0 undecidable manual SG? 216 0.0045 1.54 0
--.PRG.Z. 1985-04-06T01:28:00.00 10.0 undecidable manual PG 329 0.0091 -0.96 1.9
--.AS1.Z. 1985-04-06T01:27:59.00 10.0 positive manual PG 338 0.0081 0.23 1.5
--.SD1.Z. 1985-04-06T01:27:54.50 10.0 undecidable manual PG 134 0.0066 -1.01 0.9
--.PO9.Z. 1985-04-06T01:27:54.00 10.0 undecidable manual SG 341 0.0033 -0.87 0.4
--.MNS.Z. 1985-04-06T01:27:53.00 10.0 undecidable manual SG 297 0.0032 -1.13 0.5
--.ALP.Z. 1985-04-06T01:27:51.80 10.0 undecidable manual PG? 31 0.0058 -2.31 0
--.AQU.Z. 1985-04-06T01:27:51.00 10.0 undecidable manual SG 58 0.0023 0.67 0.5
--.RMP.Z. 1985-04-06T01:27:51.00 10.0 undecidable manual PG 216 0.0045 -0.37 2.9
--.RDP.Z. 1985-04-06T01:27:51.50 10.0 undecidable manual PG 212 0.0049 -0.57 2.6
--.MNS.Z. 1985-04-06T01:27:48.00 10.0 positive manual PG 297 0.0032 -0.29 3
--.PO9.Z. 1985-04-06T01:27:48.00 10.0 undecidable manual PG 341 0.0033 -0.72 1.2
--.AQU.Z. 1985-04-06T01:27:45.00 10.0 positive manual PG 58 0.0023 -1.1 1.7
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