Earthquake 20210407-12

Summary
Focal Mechanism/Moment Tensors
Station Magnitudes
Picks
Ground Motion/Shake Map

2021-04-07 21:54:57.020	2.90 km	4.43 ML
36.4018°N, 27.0378°E
Mediterranean Sea
564 km N of Marsa Matruh

Time Error:	3.66 s	Num. Stations:	12
Time RMS:	1.80 s	Num. Phases:	12
Depth Error:	48.30 km	Max. Intensity (MMI):
Azimuth Gap:	112°	Effects Type:	Seismic
Analysis Type:	Manual

MANUALLY REVIEWED LOCATION

Magnitudes

Preferred	Magnitude	Stations	Error	Author	Action
	3.90 Md	1	0.5	NEIC
	4.40 ML	4	0.2	NEIC
	3.10 mb_Lg	4	0.3	NEIC
	4.80 M	5	0.5	NEIC
	4.43 ML			NEIC

Origin Details

Ellipse Major:	11.10 km	Fixed Depth:	no
Ellipse Minor:	8.20 km	Fixed Phase:	no
Ellipse Strike:	179.0°	Fixed Time:	no
Min. Distance:	1.39°	Author:	NRIAG
Max. Distance:	10.87°	Event Type:	Earthquake
Fixed Location:	no	External Event ID:	HYDRA_RED@21135
Location Method:	Inversion	External Origin ID:	HYDRA_RED@37237

Error Ellipse

	Length	Azimuth	Dip	Action
Maximum	74.40 km	158.00°	80.00°
Intermediate	23.70 km	13.00°	7.00°
Minimum	18.40 km	282.00°	5.00°

None

Channel	Time	Amplitude	Period/Duration	Magnitude		Event Distance	Event Azimuth	Action
GE.APE.--.HHZ	2021-04-07 21:57:25.900	123.3	0 s	3.80	Md	1.39°	299.3°
HL.SWA.--.HHN	2021-04-07 21:58:11.480	66.8	0.50 s	4.50	ML	7.26°	191.0°
HL.RYAN.--.HHE	2021-04-07 21:58:31.609	40.3	0.88 s	4.40	ML	7.79°	158.6°
HL.SWA.--.HHZ	2021-04-07 21:58:45.714	21.6	0.93 s	3.10	mb_Lg	7.26°	191.0°
HL.RYAN.--.HHZ	2021-04-07 21:59:00.614	18.8	0.95 s	3.10	mb_Lg	7.79°	158.6°
HL.NBNS.--.HHZ	2021-04-07 21:59:29.591	18.5	1.02 s	3.10	mb_Lg	8.55°	154.0°
HL.FRF.--.HHZ	2021-04-07 21:59:55.675	13.1	0.97 s	3.00	mb_Lg	9.29°	173.0°

Channel	Phase	Time	Time Residual	Direction	Event Distance	Event Azimuth	Automatic?	Defined By	Action
GE.APE.--.HHZ	Pn	2021-04-07 21:55:22.549	-0.80 s	_	1.39°	299.3°	yes	Time
GE.ISP.10.SHZ	Pn	2021-04-07 21:55:48.490	1.20 s	_	3.13°	61.6°	yes	Time
GE.KTHA.--.HHZ	Pn	2021-04-07 21:55:52.930	4.50 s	_	3.21°	268.6°	yes	Time
GE.CSS.--.SHZ	Pn	2021-04-07 21:56:17.309	-0.10 s	_	5.32°	103.8°	yes	Time
IU.ANTO.10.BHZ	Pn	2021-04-07 21:56:22.839	0.10 s	_	5.71°	50.9°	yes	Time
HL.SWA.--.HHZ	Pn	2021-04-07 21:56:43.960	-0.10 s	_	7.26°	191.0°	yes	Time
GE.SALP.--.HHZ	Pn	2021-04-07 21:56:53.170	-1.30 s	_	8.01°	120.3°	yes	Time
IS.KZIT.--.SHZ	Pn	2021-04-07 21:56:57.049	-0.20 s	_	8.23°	129.7°	yes	Time
HL.RYAN.--.HHN	Pn	2021-04-07 21:56:58.710	7.40 s	_	7.79°	158.6°	yes	Time
GE.UJAP.--.HHZ	Pn	2021-04-07 21:57:01.289	3.40 s	_	8.27°	120.0°	yes	Time
GE.MSBI.--.HHZ	Pn	2021-04-07 21:57:04.099	2.00 s	_	8.58°	123.9°	yes
HL.FRF.--.HHZ	Pn	2021-04-07 21:57:10.009	-1.90 s	_	9.29°	173.0°	yes	Time
HL.TR2.--.ELZ	Pn	2021-04-07 21:57:19.160	0.50 s	_	9.79°	142.9°	yes
HL.KAT.--.HHZ	Pn	2021-04-07 21:57:20.470	1.30 s	_	9.81°	141.3°	yes
HL.NUB.--.ELZ	Pn	2021-04-07 21:57:21.789	3.30 s	_	9.78°	136.9°	yes
HL.HRG.--.HHZ	Pn	2021-04-07 21:57:36.029	2.50 s	_	10.87°	147.2°	yes	Time

Ground Motion

None

Shake Maps

None