Earthquake with magnitude of ML 0.7 on date 20-08-2021 and time 21:59:16 (Italy) in region 3 km SE Marsicovetere (PZ)

A magnitude ML 0.7 earthquake occured in region: 3 km SE Marsicovetere (PZ), on

  • 20-08-2021 19:59:16 (UTC)
  • 20-08-2021 21:59:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.357, 15.86 at 8 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Marsicovetere PZ 4 5546 5546
Viggiano PZ 4 3329 8875
Tramutola PZ 7 3089 11964
Grumento Nova PZ 9 1700 13664
Paterno PZ 11 3368 17032
Sarconi PZ 12 1404 18436
Moliterno PZ 13 4062 22498
Marsico Nuovo PZ 13 4098 26596
Montemurro PZ 13 1235 27831
Calvello PZ 13 1948 29779
Spinoso PZ 14 1462 31241
Laurenzana PZ 15 1797 33038
Corleto Perticara PZ 16 2511 35549
Montesano sulla Marcellana SA 16 6704 42253
Padula SA 17 5368 47621
Abriola PZ 17 1531 49152
Armento PZ 18 631 49783
Anzi PZ 19 1696 51479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km S of Potenza (67122 inhabitants)
71 Km SW of Matera (60436 inhabitants)
79 Km SW of Altamura (70396 inhabitants)
79 Km E of Battipaglia (50786 inhabitants)
100 Km E of Salerno (135261 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
ML 0.7 2021-08-20
19:59:16
40.3568 15.8603 8 2021-08-20
20:04:18
Sala Sismica INGV-Roma 94438491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-20 19:59:16 ± 0.12
Latitude 40.3568 ± 0.0045
Longitude 15.8603 ± 0.0059
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94438491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 94438491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-20 20:04:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SCHR.EHZ. 2021-08-20T19:59:26.09 0.6 undecidable manual S 134 0.2275 108 0.06 50
IV.SIRI.HHZ. 2021-08-20T19:59:24.24 0.6 undecidable manual S 178 0.1745 113 0.12 49
IV.MGR.HHE. 2021-08-20T19:59:23.91 0.6 undecidable manual P 227 0.3202 50 -0.19 47
IV.MTSN.HHZ. 2021-08-20T19:59:22.77 0.6 undecidable manual S 223 0.1223 121 0.45 47
IX.PGN3.HHZ.02 2021-08-20T19:59:22.36 0.6 undecidable manual P 347 0.2203 108 0.37 47
IV.SCHR.EHZ. 2021-08-20T19:59:21.87 1.0 positive manual P 134 0.2275 108 -0.27 24
IV.SIRI.HHZ. 2021-08-20T19:59:21.09 0.6 negative manual P 178 0.1745 113 0.06 50
IV.SLCN.HHZ. 2021-08-20T19:59:21.19 1.0 negative manual P 281 0.1763 113 0.12 25
IX.VGG3.HNZ.01 2021-08-20T19:59:20.06 0.6 undecidable manual S 124 0.0378 153 0.07 51
IV.MCEL.HHZ. 2021-08-20T19:59:20.05 0.6 undecidable manual S 234 0.0549 143 -0.3 49
IV.MTSN.HHZ. 2021-08-20T19:59:20.06 1.0 undecidable manual P 223 0.1223 121 0.06 25
IX.MRN3.HNZ.01 2021-08-20T19:59:19.91 0.6 undecidable manual P 305 0.1205 121 -0.06 51
IX.VGG3.HNZ.01 2021-08-20T19:59:18.54 0.6 undecidable manual P 124 0.0378 153 -0.11 51
IV.MCEL.HHZ. 2021-08-20T19:59:18.68 0.1 positive manual P 234 0.0549 143 -0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCEL.HHE. ML:0.9 0.000157715945 0.1664 AML other m 2021-08-20T19:59:20.44
IV.MCEL.HHN. ML:0.9 0.0001368619 0.2048 AML other m 2021-08-20T19:59:20.79
IV.MCEL.HNE. ML:1.4 0.000544505825 0.7936 AML other m 2021-08-20T19:59:21.02
IV.MCEL.HNN. ML:1.4 0.00049956868 0.1792 AML other m 2021-08-20T19:59:20.27
IV.MTSN.HHE. ML:0.5 3.448441E-5 0.32 AML other m 2021-08-20T19:59:25.36
IV.MTSN.HHN. ML:0.5 3.710266E-5 0.2688 AML other m 2021-08-20T19:59:22.78
IV.MTSN.HNE. ML:0.8 6.7183145E-5 0.8448 AML other m 2021-08-20T19:59:27.65
IV.MTSN.HNN. ML:0.5 3.329842E-5 0.7296 AML other m 2021-08-20T19:59:29.76
IV.SIRI.HHE. ML:0.5 2.3531485E-5 0.2048 AML other m 2021-08-20T19:59:24.51
IV.SIRI.HHN. ML:0.8 4.3965845E-5 0.1536 AML other m 2021-08-20T19:59:24.51
IV.SIRI.HNE. ML:0.6 3.4293105E-5 0.1664 AML other m 2021-08-20T19:59:25.04
IV.SIRI.HNN. ML:0.8 4.4561975E-5 0.1792 AML other m 2021-08-20T19:59:24.51
IV.SLCN.HHE. ML:0.6 3.651123E-5 0.512 AML other m 2021-08-20T19:59:31.97
IV.SLCN.HHN. ML:0.6 3.43915505E-5 0.0768 AML other m 2021-08-20T19:59:23.02
IV.SLCN.HNE. ML:1.2 0.00011369789 0.64 AML other m 2021-08-20T19:59:27.33
IV.SLCN.HNN. ML:1.3 0.00017242789 0.6272 AML other m 2021-08-20T19:59:29.96
IV.SCHR.EHE. ML:0.2 1.16704065E-5 0.1792 AML other m 2021-08-20T19:59:26.34
IV.SCHR.EHN. ML:0.4 1.43230565E-5 0.1408 AML other m 2021-08-20T19:59:27.04
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download