Earthquake with magnitude of Mwp 6.0 on date 22-11-2020 and time 01:54:54 (Italy) in region Chile (Peruvian point of view) [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Chile (Peruvian point of view) [Sea], on

  • 22-11-2020 00:54:54 (UTC)
  • 22-11-2020 01:54:54 (UTC +01:00) Italian time
  • 21-11-2020 21:54:54 (UTC -03:00) local time in the region of the earthquake (America/Santiago)

and geographic coordinates (lat, lon) -34.6, -73.15 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 5.6
Mwp 6.0

Mwpd 6.3
2020-11-22
00:54:54
-34.6 -73.15 10 2020-11-22
01:07:53
Sala Sismica INGV-Roma 84923581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-22 00:54:54
Latitude -34.60
Longitude -73.15
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 84923581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3555
Semi-minor axis of confidence ellipse (meter) 1552
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 3111.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103.878
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.826274
Epicentral distance of station closest to the epicenter (degree) 1.08381
Epicentral distance of station farthest from the epicenter (degree) 35.18965
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 15
Type of magnitude Mwp
Reference to an origin 84923581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-22 01:07:53

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude Mwpd
Reference to an origin 84923581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-22 01:07:53

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 9
Type of magnitude mb
Reference to an origin 84923581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-22 01:07:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.OTAV.BHZ.00 2020-11-22T01:01:49.77 10.0 positive automatic P 351 35.1896 0.693662 0.842781
IU.PMSA.BHZ.00 2020-11-22T01:01:09.92 10.0 positive automatic P 172 30.6706 0.92262 0.838092
G.SPB.BHZ.00 2020-11-22T01:00:17.75 10.0 negative automatic P 71 24.9288 0.0591142 0.888889
II.NNA.BHZ.00 2020-11-22T00:59:58.27 10.0 negative automatic P 351 22.8613 0.413177 0.952381
II.EFI.BHZ.00 2020-11-22T00:59:28.97 10.0 positive automatic P 152 20.2257 -0.503909 0.952381
GT.LPAZ.BHZ.00 2020-11-22T00:59:14.50 10.0 positive automatic P 15 18.8592 -0.847789 0.963855
G.COYC.BHZ.00 2020-11-22T00:57:31.95 10.0 negative automatic P 176 11.0003 0.211549 0.869565
C1.VA04.BHZ. 2020-11-22T00:57:00.83 10.0 positive automatic S 280 4.7952 -1.07972 0
C1.LL02.BHZ. 2020-11-22T00:56:58.83 10.0 positive automatic P 174 8.6472 -0.696914 0.869565
C.GO03.BHZ. 2020-11-22T00:56:41.73 10.0 negative automatic P 20 7.4397 -1.29628 0.952381
GT.PLCA.BHZ.00 2020-11-22T00:56:29.43 10.0 positive automatic P 162 6.466 -0.281068 0.987654
IU.LCO.BHZ.00 2020-11-22T00:56:22.22 10.0 negative automatic P 21 5.9666 -0.835755 0.930233
C.GO06.BHZ. 2020-11-22T00:56:11.98 10.0 positive automatic P 165 5.1583 0.20126 0.97561
WA.ZON.HHZ. 2020-11-22T00:56:09.09 10.0 negative automatic P 52 4.8331 1.86769 0.956938
C.GO04.BHZ. 2020-11-22T00:56:07.38 10.0 negative automatic P 25 4.8548 -0.376336 0.97561
C1.VA04.BHZ. 2020-11-22T00:56:06.88 10.0 positive automatic P 280 4.7952 0.290725 0.879121
C1.CO02.BHZ. 2020-11-22T00:55:53.90 10.0 positive automatic P 29 3.8493 0.130488 0.941176
G.PEL.BHZ.00 2020-11-22T00:55:36.00 10.0 positive automatic P 55 2.5224 0.562165 0.97561
C.GO05.BHZ. 2020-11-22T00:55:14.78 10.0 positive automatic P 112 1.0838 -0.342714 0.987654
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