Event 20231228-4
2023-12-28 23:39:56.320 UTC 21.82 km 2.1 Ml
35.1597°N, 31.4675°E
Mediterranean Sea
89.0 km W of Polis
Time Error: Analysis Type: Manual
Time RMS: 0.18 s Num. Stations: 8
Depth Error: 0.78 km Num. Phases: 14
Reference Elevation: 0.67 km Max. Intensity (MMI):
Azimuth: 337° Effects Type:
Magnitudes
Preferred Magnitude Stations Error Author Action
2.1 Ml 8 0
 
Origin Details
Ellipse Major: Seismic Moment:
Ellipse Minor: Corner Frequency:
Ellipse Strike: Stress Drop:
Min. Distance: 0.73° Source Radius:
Max. Distance: 1.78° Location Method:
Fixed Location: no Author: GSD
Fixed Depth: no Event Type:
Fixed Phase: no External Event ID:
Fixed Time: no External Origin ID:
Horizontal Error:
Error Ellipse
Length Azimuth Dip
Maximum 2.67 km 191.00° 1.00°
Intermediate 1.11 km 281.00° 11.00°
Minimum 0.80 km 96.00° 79.00°
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
CQ.AKMS.--.HHN 2023-12-28 23:40:23.980 UTC 0.3 0.28 s 2.0 Ml 0.73° 100.0°
CQ.AKMS.--.HHE 2023-12-28 23:40:24.170 UTC 0.5 0.44 s 2.2 Ml 0.73° 100.0°
CQ.ALEF.--.HHE 2023-12-28 23:40:30.950 UTC 0.3 0.38 s 2.2 Ml 0.93° 89.0°
CQ.ALEF.--.HHN 2023-12-28 23:40:36.470 UTC 0.2 0.72 s 2.0 Ml 0.93° 89.0°
CQ.NATA.--.HHE 2023-12-28 23:40:37.780 UTC 0.5 0.40 s 2.2 Ml 0.98° 112.0°
CQ.NATA.--.HHN 2023-12-28 23:40:40.860 UTC 0.6 0.68 s 2.3 Ml 0.98° 112.0°
CQ.TROD.--.HHE 2023-12-28 23:40:41.530 UTC 7.8e-02 0.52 s 2.0 Ml 1.17° 100.0°
CQ.XYLS.--.HHE 2023-12-28 23:40:44.540 UTC 4.6e-02 0.24 s 1.7 Ml 1.31° 95.0°
GE.CSS.--.HHN 2023-12-28 23:40:48.320 UTC 4.4e-02 0.66 s 2.0 Ml 1.54° 96.0°
CQ.MVOU.--.HHN 2023-12-28 23:40:52.550 UTC 4.0e-02 1.14 s 2.1 Ml 1.78° 93.0°
CQ.ASGA.--.HHE 2023-12-28 23:40:54.620 UTC 9.9e-02 0.56 s 2.2 Ml 1.51° 103.0°
GE.CSS.--.HHE 2023-12-28 23:40:57.190 UTC 5.3e-02 0.70 s 2.1 Ml 1.54° 96.0°
CQ.ASGA.--.HHN 2023-12-28 23:40:57.540 UTC 9.3e-02 0.90 s 2.2 Ml 1.51° 103.0°
Channel Phase Time Time Residual Direction Event Distance Event Azimuth SNR Automatic? Defined By Action
CQ.AKMS.--.HHZ P 2023-12-28 23:40:10.457 UTC -0.010 s Unspecified 0.73° 100.0° 4.38 no
CQ.ALEF.--.HHZ P 2023-12-28 23:40:13.629 UTC -0.21 s Unspecified 0.93° 89.0° 2.26 no
CQ.NATA.--.HHZ P 2023-12-28 23:40:14.588 UTC -0.010 s Unspecified 0.98° 112.0° 2.67 no
CQ.TROD.--.HHZ P 2023-12-28 23:40:16.579 UTC -0.61 s Unspecified 1.17° 100.0° 1.28 no
CQ.XYLS.--.HHZ P 2023-12-28 23:40:19.022 UTC -0.10 s Unspecified 1.31° 95.0° 1.47 no
CQ.AKMS.--.HHN S 2023-12-28 23:40:21.527 UTC 0.010 s Unspecified 0.73° 100.0° 4.71 no
CQ.ASGA.--.HHZ P 2023-12-28 23:40:21.729 UTC -0.24 s Unspecified 1.51° 103.0° 1.22 no
GE.CSS.--.HHZ P 2023-12-28 23:40:22.740 UTC 0.31 s Unspecified 1.54° 96.0° 0.93 no
CQ.MVOU.--.HHZ P 2023-12-28 23:40:26.042 UTC 0.26 s Unspecified 1.78° 93.0° 1.49 no
CQ.ALEF.--.HHN S 2023-12-28 23:40:27.386 UTC -0.12 s Unspecified 0.93° 89.0° 3.70 no
CQ.NATA.--.HHN S 2023-12-28 23:40:28.861 UTC 0 s Unspecified 0.98° 112.0° 2.01 no
CQ.TROD.--.HHN S 2023-12-28 23:40:33.197 UTC -0.27 s Unspecified 1.17° 100.0° 1.15 no
CQ.XYLS.--.HHE S 2023-12-28 23:40:37.181 UTC 0.28 s Unspecified 1.31° 95.0° 0.86 no
CQ.ASGA.--.HHN S 2023-12-28 23:40:42.100 UTC 0.11 s Unspecified 1.51° 103.0° 1.18 no
GE.CSS.--.HHN S 2023-12-28 23:40:43.595 UTC 0.80 s Unspecified 1.54° 96.0° 1.21 no
CQ.MVOU.--.HHN S 2023-12-28 23:40:48.750 UTC -0.010 s Unspecified 1.78° 94.0° 0.84 no

Ground Motion

Channel Intensity PGA (cm/s2) PGV (cm/s)
CQ.AKMS.--.HHE I 0.0179 0.0003
CQ.AKMS.--.HHN I 0.0116 0.0003
CQ.AKMS.--.HHZ I 0.0101 0.0002
CQ.ALEF.--.HHE I 0.0068 0.0001
CQ.ALEF.--.HHN I 0.0095 0.0002
CQ.ALEF.--.HHZ I 0.0055 7.3932e-05
CQ.ASGA.--.HHE I 0.0018 4.0602e-05
CQ.ASGA.--.HHN I 0.0015 3.9745e-05
CQ.ASGA.--.HHZ I 0.0018 2.8551e-05
CQ.MVOU.--.HHE I 0.0004 1.4024e-05
CQ.MVOU.--.HHN I 0.0004 1.7000e-05
CQ.MVOU.--.HHZ I 0.0006 1.4869e-05
CQ.NATA.--.HHE I 0.0443 0.0003
CQ.NATA.--.HHN I 0.0515 0.0004
CQ.NATA.--.HHZ I 0.0683 0.0004
CQ.TROD.--.HHE I 0.0007 3.8322e-05
CQ.TROD.--.HHN I 0.0010 3.5414e-05
CQ.TROD.--.HHZ I 0.0007 2.6452e-05
CQ.XYLS.--.HHE I 0.0017 3.6116e-05
CQ.XYLS.--.HHN I 0.0016 3.2562e-05
CQ.XYLS.--.HHZ I 0.0014 2.7867e-05
GE.CSS.--.HHE I 0.0009 2.3012e-05
GE.CSS.--.HHN I 0.0009 1.6941e-05
GE.CSS.--.HHZ I 0.0008 1.5745e-05
GE.CSS.--.HLE I 0.0014 4.5589e-05
GE.CSS.--.HLN I 0.0014 4.6295e-05
GE.CSS.--.HLZ I 0.0017 4.1365e-05

Perceived shaking Not felt Very weak Weak Light Moderate Strong Very strong Severe Violent Extreme
Potential damage None None None None Very light Light Moderate Mod./Heavy Heavy Very heavy
Max peak acc. (cm/s2) 0.98 4.9 24 66 128 235 432 814 1530 999999
Max peak vel. (cm/s) 0.07 0.4 1.9 5.8 11 22 43 83 160 999999
Instrumental intensity I II III IV V VI VII VIII IX X