Earthquake with magnitude of mb 5.1 on date 22-11-2020 and time 03:53:10 (UTC) in region Northern Algeria [Land: Algeria]

A magnitude mb 5.1 earthquake occured in region: Northern Algeria [Land: Algeria], on

  • 22-11-2020 03:53:10 (UTC)
  • 22-11-2020 04:53:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 36.75, 6.72 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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

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
Seismic hazard
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.1
Mwp 5.3
Mwpd 5.7
2020-11-22
03:53:10
36.75 6.72 10 2020-11-22
08:22:51
Sala Sismica INGV-Roma 84932061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-22 03:53:10
Latitude 36.75
Longitude 6.72
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 84932061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4580
Semi-minor axis of confidence ellipse (meter) 1722
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 3907.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103.669
Number of associated phases, regardless of their use for origin computation 74
Number of defining phases 74
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.30835
Epicentral distance of station closest to the epicenter (degree) 3.45169
Epicentral distance of station farthest from the epicenter (degree) 29.74239
Number of stations at which the event was observed 74
Number of stations from which data was used for origin computation 74
Magnitudes information

Mwp:5.3

Field Value
Value 5.3
Uncertainty 0
Num. used stations 3
Type of magnitude Mwp
Reference to an origin 84932061
Agency INGV
Autore early-est_ee1.2.4
Time of creation (UTC) 2020-11-22 08:22:51

Mwpd:5.7

Field Value
Value 5.7
Uncertainty 0
Num. used stations 3
Type of magnitude Mwpd
Reference to an origin 84932061
Agency INGV
Autore early-est_ee1.2.4
Time of creation (UTC) 2020-11-22 08:22:51

mb:5.1

Field Value
Value 5.1
Uncertainty 0.2
Num. used stations 68
Type of magnitude mb
Reference to an origin 84932061
Agency INGV
Autore early-est_ee1.2.4
Time of creation (UTC) 2020-11-22 08:22:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.GNI.BHZ.00 2020-11-22T03:59:16.87 10.0 positive automatic P 72 29.7424 -0.850348 0.869565
KO.GURO.HHZ. 2020-11-22T03:59:00.01 10.0 positive automatic P 75 27.8454 0.436074 0.952381
GE.VSU.BHZ. 2020-11-22T03:58:35.35 10.0 positive automatic P 25 25.3447 -0.6947 0.930233
GE.EIL.BHZ. 2020-11-22T03:58:29.50 10.0 positive automatic P 98 24.5565 -0.659295 0.930233
KO.GAZ.BHZ. 2020-11-22T03:58:27.62 10.0 positive automatic P 80 24.2612 -0.437344 0.981
GE.MSBI.BHZ. 2020-11-22T03:58:26.95 10.0 positive automatic P 94 24.2517 0.161484 0.952381
GE.SALP.BHZ. 2020-11-22T03:58:23.47 10.0 positive automatic P 93 23.86 0.135953 0.941176
IS.GEM.BHZ. 2020-11-22T03:58:23.65 10.0 positive automatic P 90 23.8856 0.127134 0.449043
IS.AMAZ.BHZ. 2020-11-22T03:58:22.59 10.0 positive automatic P 94 23.8209 -0.376058 0.930233
IS.KZIT.BHZ. 2020-11-22T03:58:20.81 10.0 positive automatic P 96 23.6336 -0.410475 0.909091
KO.BNN.BHZ. 2020-11-22T03:58:14.28 10.0 positive automatic P 76 23.0135 -0.74141 0.435058
GE.CSS.BHZ. 2020-11-22T03:57:58.75 10.0 positive automatic P 87 21.5737 -1.46855 1.32547
IU.KIEV.BHZ.00 2020-11-22T03:57:53.27 10.0 positive automatic P 42 21.2738 -2.97385 0.769231
PL.SUW.BHZ. 2020-11-22T03:57:49.24 10.0 positive automatic P 28 20.6648 0.554076 0.869565
II.ESK.BHZ.00 2020-11-22T03:57:41.07 10.0 positive automatic P 343 19.7557 1.98918 0.930233
KO.MDUB.BHZ. 2020-11-22T03:57:38.26 10.0 positive automatic P 71 19.4206 2.19687 0.877193
KO.ELL.BHZ. 2020-11-22T03:57:25.34 10.0 positive automatic P 83 18.5354 -2.10911 0.980392
GE.TIRR.BHZ. 2020-11-22T03:57:22.58 10.0 positive automatic P 58 18.1106 1.19049 0.909091
HL.ARG.HHZ. 2020-11-22T03:57:09.45 10.0 positive automatic P 85 17.1813 -1.47807 0.225225
KO.BALB.HHZ. 2020-11-22T03:57:04.92 10.0 positive automatic P 74 16.8393 -0.649969 0.769231
PL.OJC.BHZ. 2020-11-22T03:57:03.09 10.0 positive automatic P 31 16.4238 2.83848 0.888889
GE.KARP.BHZ. 2020-11-22T03:57:01.05 10.0 positive automatic P 88 16.5196 -1.45646 0.952381
HT.ALN.HHZ. 2020-11-22T03:56:48.73 10.0 positive automatic P 69 15.5841 -0.892581 0.952381
GE.PSZ.BHZ. 2020-11-22T03:56:40.90 10.0 positive automatic P 37 14.7763 2.21719 0.930233
MN.BZS.BHZ. 2020-11-22T03:56:32.82 10.0 positive automatic P 47 14.2693 0.975223 0.930233
RD.ROSF.BHZ. 2020-11-22T03:56:23.36 10.0 positive automatic P 331 13.6998 -0.718361 0.970874
CZ.KHC.BHZ. 2020-11-22T03:56:19.80 10.0 positive automatic P 20 13.3459 0.915476 0.952381
LX.GGNV.BHZ. 2020-11-22T03:56:13.12 10.0 positive automatic P 284 12.6854 2.92793 0.930233
GE.WLF.BHZ. 2020-11-22T03:56:13.75 10.0 positive automatic P 358 12.9199 -0.321081 0.952381
HT.LIT.HHZ. 2020-11-22T03:56:12.89 10.0 positive automatic P 70 12.7824 1.06343 0.904977
HU.KOVH.BHZ. 2020-11-22T03:56:10.35 10.0 positive automatic P 39 12.6249 0.942716 0.869565
HT.AGG.HHZ. 2020-11-22T03:56:08.69 10.0 positive automatic P 75 12.517 0.586598 0.966184
OE.ARSA.BHZ. 2020-11-22T03:56:07.12 10.0 positive automatic P 29 12.3535 1.53989 0.930233
HL.ITM.HHZ. 2020-11-22T03:56:02.05 10.0 positive automatic P 83 12.1451 -0.795529 0.980392
LX.MESJ.BHZ. 2020-11-22T03:55:59.64 10.0 positive automatic P 280 11.9196 -0.114109 0.952381
GE.MTE.BHZ. 2020-11-22T03:55:58.40 10.0 positive automatic P 292 11.7152 1.04847 0.97561
II.BFO.BHZ.00 2020-11-22T03:55:55.97 10.0 positive automatic P 5 11.639 0.479043 0.888889
PM.PESTR.BHZ. 2020-11-22T03:55:54.85 10.0 positive automatic P 285 11.4872 1.01912 0.930233
MN.BLY.BHZ. 2020-11-22T03:55:52.52 10.0 positive automatic P 41 11.2439 2.33087 0.869565
G.ECH.BHZ.00 2020-11-22T03:55:51.35 10.0 positive automatic P 1 11.4698 -2.31136 0.952381
MN.PDG.BHZ. 2020-11-22T03:55:51.27 10.0 positive automatic P 56 11.1933 1.43523 0.869565
RD.MFF.BHZ. 2020-11-22T03:55:46.78 10.0 positive automatic P 335 11.0945 -1.68725 0.934579
OE.DAVA.BHZ. 2020-11-22T03:55:45.42 10.0 positive automatic P 12 10.7919 0.155499 0.930233
RD.LOR.BHZ. 2020-11-22T03:55:42.44 10.0 positive automatic P 350 10.7275 -1.05145 0.943396
ES.ELAN.HHZ. 2020-11-22T03:55:36.10 10.0 positive automatic P 313 10.1104 1.04447 0.966184
MN.TUE.BHZ. 2020-11-22T03:55:33.05 10.0 positive automatic P 11 9.9165 0.0377229 0.952381
ES.ECAB.HHZ. 2020-11-22T03:55:29.35 10.0 positive automatic P 281 9.7224 -0.37093 0.97561
IV.SALO.BHZ. 2020-11-22T03:55:25.95 10.0 positive automatic P 17 9.3157 1.85285 0.909091
RD.LFF.BHZ. 2020-11-22T03:55:23.22 10.0 positive automatic P 333 9.3475 -1.27495 0.961538
IU.PAB.BHZ.00 2020-11-22T03:55:22.07 10.0 positive automatic P 291 9.1334 0.0518361 0.930233
GE.MATE.BHZ. 2020-11-22T03:55:16.00 10.0 positive automatic P 60 8.707 1.80771 0.869565
ES.EGOR.HHZ. 2020-11-22T03:55:15.80 10.0 positive automatic P 276 8.6572 0.534976 0.888889
G.SSB.BHZ.00 2020-11-22T03:55:13.30 10.0 positive automatic P 350 8.6836 -1.82191 0.909091
RD.ETSF.BHZ. 2020-11-22T03:55:11.18 10.0 positive automatic P 320 8.3014 0.86998 0.970874
MN.TIP.BHZ. 2020-11-22T03:55:11.37 10.0 positive automatic P 70 8.2746 1.8572 0.909091
IV.MONC.BHZ. 2020-11-22T03:55:11.43 10.0 positive automatic P 6 8.3727 -0.383004 0.930233
IV.BOB.BHZ. 2020-11-22T03:55:10.30 10.0 positive automatic P 14 8.278 -0.28088 0.952381
MN.BNI.BHZ. 2020-11-22T03:55:09.97 10.0 positive automatic P 360 8.3011 -0.826896 0.97561
RD.ORIF.BHZ. 2020-11-22T03:55:08.90 10.0 positive automatic P 356 8.1918 0.0731063 0.952381
RD.EPF.BHZ. 2020-11-22T03:55:05.74 10.0 positive automatic P 324 7.9558 0.202659 0.980392
MN.AQU.BHZ. 2020-11-22T03:55:02.67 10.0 positive automatic P 41 7.6095 0.831686 0.952381
IV.MGAB.BHZ. 2020-11-22T03:54:59.05 10.0 positive automatic P 32 7.421 0.240613 0.909091
MN.CEL.BHZ. 2020-11-22T03:54:58.37 10.0 positive automatic P 76 7.4308 0.394558 0.952381
RD.MTLF.BHZ. 2020-11-22T03:54:55.88 10.0 positive automatic P 334 7.4333 -2.42209 0.943396
IV.HAGA.BHZ. 2020-11-22T03:54:47.26 10.0 positive automatic P 83 6.7555 -1.7001 0.930233
RD.FLAF.BHZ. 2020-11-22T03:54:45.68 10.0 positive automatic P 357 6.6412 -1.73258 0.961538
ES.EPOB.HHZ. 2020-11-22T03:54:43.05 10.0 positive automatic P 318 6.3494 -0.45787 0.961538
MN.WDD.BHZ. 2020-11-22T03:54:40.97 10.0 positive automatic P 96 6.3559 -1.33219 0.909091
WM.CART.BHZ. 2020-11-22T03:54:40.62 10.0 positive automatic P 280 6.2052 0.933756 1.97561
RD.PGF.BHZ. 2020-11-22T03:54:38.12 10.0 positive automatic P 16 6.0572 -1.41587 0.900901
IV.GIB.BHZ. 2020-11-22T03:54:36.70 10.0 positive automatic P 76 5.9371 -1.17154 0.952381
ES.EIBI.HHZ. 2020-11-22T03:54:22.30 10.0 positive automatic P 300 4.8119 0.0264373 1.95315
ES.ETOS.HHZ. 2020-11-22T03:54:15.09 10.0 positive automatic P 316 4.2997 -0.181902 1.96736
MN.VSL.BHZ. 2020-11-22T03:54:01.07 10.0 positive automatic P 37 3.4517 -2.52325 0.930233
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