Earthquake Costa Greca Ionica (GRECIA), Magnitude M 4.4, 22 April 1986 time 22:33:39 (Timezone Italy)

A magnitude M 4.4 earthquake occured in region: Costa Greca Ionica (GRECIA), on

22-04-1986 20:33:39 (UTC)
22-04-1986 22:33:39 (UTC +02:00) Italian time
22-04-1986 23:33:39 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 38.2150, 20.4880 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.

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Display location by

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity

Not available maps for this sismic event.

Seismic hazard

Not available maps for this sismic event.

Shakemap

Not available maps for this sismic event.

Felt maps

Not available maps for this sismic event.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Bulletin Rev1000	M 4.4	1986-04-22 20:33:39	38.215	20.488	10	2013-07-15 08:41:04	Bollettino Sismico Italiano INGV	25909

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	1986-04-22 20:33:39 ± 0.296
Latitude	38.2150 ± 0.0230
Longitude	20.4880 ± 0.0265
Depth (km)	10 (operator assigned)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-VAX
Event type	earthquake
Origin ID	25909

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)	3452.8
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	141
Number of associated phases, regardless of their use for origin computation	46
Number of defining phases	46
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.6
Epicentral distance of station closest to the epicenter (degree)	0.00073
Epicentral distance of station farthest from the epicenter (degree)	0.09414
Number of stations at which the event was observed	39
Number of stations from which data was used for origin computation	39

Magnitude information

M:4.4

Field	Value
Value	4.4
Uncertainty
Num. used stations
Type of magnitude	M
Reference to an origin	25909
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2015-04-28 09:54:13

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Residual	Weight
--.CTI.Z.	1986-04-22T20:37:53.00	10.0	undecidable	manual	SN	323	10.1898	0.56	0.4
--.FO1.Z.	1986-04-22T20:37:50.50	10.0	undecidable	manual	SN	328	10.1121	0.05	0.5
--.RBL.Z.	1986-04-22T20:37:41.00	10.0	undecidable	manual	SN	330	9.6681	1.04	0.2
--.TRI.Z.	1986-04-22T20:37:25.00	10.0	undecidable	manual	SN	328	8.991	1.16	0.2
--.SAL.Z.	1986-04-22T20:36:08.50	10.0	undecidable	manual	PN	318	10.4451	-0.45	1.1
--.CTI.Z.	1986-04-22T20:36:03.50	10.0	undecidable	manual	PN	323	10.1898	-1.95	0.1
--.FO1.Z.	1986-04-22T20:36:03.50	10.0	undecidable	manual	PN	328	10.1121	-0.8	0.9
--.RBL.Z.	1986-04-22T20:35:58.20	10.0	undecidable	manual	PN	330	9.6681	-0.04	1.2
--.VOY.Z.	1986-04-22T20:35:50.00	10.0	undecidable	manual	PN	330	9.2019	-1.85	0.2
--.TRI.Z.	1986-04-22T20:35:47.00	10.0	undecidable	manual	PN	328	8.991	-1.94	0.2
--.LJU.Z.	1986-04-22T20:35:47.40	10.0	undecidable	manual	PN	332	8.9799	-1.3	0.5
--.FG3.Z.	1986-04-22T20:35:46.00	10.0	undecidable	manual	SN	316	4.9173	-0.91	0.4
--.CEY.Z.	1986-04-22T20:35:44.10	10.0	undecidable	manual	PN	331	8.7468	-1.56	0.3
--.CRE.Z.	1986-04-22T20:35:42.00	10.0	undecidable	manual	PN	312	8.4027	1.2	0.5
--.PZI.Z.	1986-04-22T20:35:37.00	10.0	undecidable	manual	SN	256	4.5288	-0.61	0.4
--.ASS.Z.	1986-04-22T20:35:32.00	10.0	undecidable	manual	PN	311	7.659	1.41	0.4
--.ARV.Z.	1986-04-22T20:35:31.70	10.0	undecidable	manual	PN	315	7.7589	-0.33	1.3
--.MNS.Z.	1986-04-22T20:35:25.50	10.0	undecidable	manual	PN	307	7.2483	0.44	1.3
--.ALP.Z.	1986-04-22T20:35:21.90	10.0	undecidable	manual	PN	313	6.9597	0.16	1.4
--.AQU.Z.	1986-04-22T20:35:20.00	10.0	undecidable	manual	PN	309	6.7932	1.26	0.5
--.SD1.Z.	1986-04-22T20:35:10.70	10.0	undecidable	manual	PN	306	6.1827	0.34	1.5
--.DUI.Z.	1986-04-22T20:35:05.70	10.0	undecidable	manual	PN	308	5.7498	1.27	0.6
--.SAR.Z.	1986-04-22T20:35:05.40	10.0	undecidable	manual	PN	345	5.8608	-0.45	1.5
--.GIB.Z.	1986-04-22T20:34:56.50	10.0	undecidable	manual	PN	269	5.0727	1.34	0.6
--.LCI.Z.	1986-04-22T20:34:55.50	10.0	undecidable	manual	SN	319	2.7972	-0.95	0.4
--.FG3.Z.	1986-04-22T20:34:53.00	10.0	positive	manual	PN	316	4.9173	0.02	3.3
--.PZI.Z.	1986-04-22T20:34:46.70	10.0	undecidable	manual	PN	256	4.5288	-0.9	0.9
--.MG9.Z.	1986-04-22T20:34:44.20	10.0	undecidable	manual	PN	298	4.2624	0.14	1.6
--.BCI.Z.	1986-04-22T20:34:42.50	10.0	undecidable	manual	PN	355	4.1514	0.02	1.6
--.CSI.Z.	1986-04-22T20:34:36.10	10.0	undecidable	manual	PN	297	3.6075	1.12	0.7
--.ORI.Z.	1986-04-22T20:34:36.20	10.0	undecidable	manual	PN	301	3.6186	0.99	0.9
--.BRT.Z.	1986-04-22T20:34:35.50	10.0	undecidable	manual	PN	317	3.6963	-0.63	1.4
--.CZI.Z.	1986-04-22T20:34:34.40	10.0	undecidable	manual	PN	287	3.5298	0.45	1.5
--.DR2.Z.	1986-04-22T20:34:34.90	10.0	undecidable	manual	PN	278	3.5853	0.24	1.6
--.PHP.Z.	1986-04-22T20:34:33.00	10.0	undecidable	manual	PN	359	3.4632	0	1.6
--.SO9.Z.	1986-04-22T20:34:32.50	10.0	undecidable	manual	PN	269	3.4743	-0.71	1.1
--.FE2.Z.	1986-04-22T20:34:32.20	10.0	undecidable	manual	PN	268	3.4632	-0.7	1.1
--.GR9.Z.	1986-04-22T20:34:30.00	10.0	undecidable	manual	PN	282	3.2301	0.32	1.6
--.ROI.Z.	1986-04-22T20:34:30.60	10.0	undecidable	manual	PN	295	3.33	-0.56	1.4
--.RI2.Z.	1986-04-22T20:34:29.20	10.0	undecidable	manual	PN	275	3.1413	0.67	1.3
--.TIR.Z.	1986-04-22T20:34:29.00	10.0	undecidable	manual	PN	351	3.1635	0.18	1.5
--.SE2.Z.	1986-04-22T20:34:26.70	10.0	undecidable	manual	PN	286	3.0414	-0.46	1.4
--.LCI.Z.	1986-04-22T20:34:23.00	10.0	undecidable	manual	PN	319	2.7972	-0.84	1.1
--.KZN.Z.	1986-04-22T20:34:18.00	10.0	undecidable	manual	PN	25	2.3088	0.88	0.8
--.SRN.Z.	1986-04-22T20:34:09.30	10.0	undecidable	manual	PN	347	1.6983	0.52	1.2
--.VLS.Z.	1986-04-22T20:33:42.00	10.0	undecidable	manual	PG	115	0.0777	-0.09	1.7

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Fault Plane solutions in the area

Not available maps for this sismic event.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download

Earthquake with magnitude of M 4.4 on date 22-04-1986 and time 22:33:39 (Italy) in region Costa Greca Ionica (GRECIA)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

M:4.4