Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 16-12-2021 and time 07:01:30 (Italy) in region 2 km SE Sapri (SA)

A magnitude ML 1.8 earthquake occured in region: 2 km SE Sapri (SA), on

  • 16-12-2021 06:01:30 (UTC)
  • 16-12-2021 07:01:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.0600, 15.6480 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sapri SA 2 6770 6770
Torraca SA 6 1263 8033
Vibonati SA 8 3293 11326
Ispani SA 8 1026 12352
Maratea PZ 10 5139 17491
Rivello PZ 10 2767 20258
Tortorella SA 10 523 20781
Santa Marina SA 10 3243 24024
Casaletto Spartano SA 11 1420 25444
Trecchina PZ 12 2316 27760
Morigerati SA 12 665 28425
Lagonegro PZ 12 5584 34009
Nemoli PZ 13 1495 35504
Caselle in Pittari SA 15 1956 37460
Lauria PZ 16 12919 50379
San Giovanni a Piro SA 17 3780 54159
Torre Orsaia SA 17 2118 56277
Casalbuono SA 18 1194 57471
Tortora CS 18 6187 63658
Roccagloriosa SA 19 1722 65380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km S of Potenza (67122 inhabitants)
83 Km SE of Battipaglia (50786 inhabitants)
100 Km NW of Cosenza (67546 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.8 2021-12-16
06:01:30		 40.06 15.6477 11 2022-03-30
13:04:24		 Bollettino Sismico Italiano INGV 99048961
Reviewed
Rev100 		ML 1.8 2021-12-16
06:01:30		 40.0652 15.6507 11 2021-12-16
06:24:13		 Sala Sismica INGV-Roma 98576101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-16 06:01:30 ± 0.08
Latitude 40.0600 ± 0.0054
Longitude 15.6477 ± 0.0059
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99048961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 537
Semi-minor axis of confidence ellipse (meter) 453
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.93260
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 99048961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-23 09:11:17

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 98576101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-16 06:24:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHE. 2021-12-16T06:01:48.21 0.6 undecidable manual P 135 103.5186 50 0.47 39
IV.GRIS.EHE. 2021-12-16T06:01:43.73 0.6 undecidable manual S 154 39.5271 50 0.29 47
IV.MMN.HHN. 2021-12-16T06:01:42.37 0.6 undecidable manual S 123 34.6431 50 0.23 48
IV.SCHR.EHZ. 2021-12-16T06:01:42.56 0.6 undecidable manual S 67 39.4272 50 -0.87 38
IV.CET2.HHZ. 2021-12-16T06:01:41.67 0.3 undecidable manual P 156 64.491 50 -0.06 70
IV.MCEL.HHZ. 2021-12-16T06:01:41.76 0.6 undecidable manual S 24 32.1456 50 0.28 48
IV.CDRU.HHZ. 2021-12-16T06:01:40.01 0.1 undecidable manual P 329 55.7997 50 -0.38 87
IV.SIRI.HHZ. 2021-12-16T06:01:39.03 0.6 undecidable manual S 54 23.0547 50 -0.01 49
IV.MTSN.HHZ. 2021-12-16T06:01:39.78 0.6 undecidable manual S 21 24.5532 50 0.34 47
IV.BULG.HHZ. 2021-12-16T06:01:39.15 0.6 undecidable manual S 275 22.9548 50 0.12 49
IX.SRN3.HHZ.02 2021-12-16T06:01:39.59 0.3 undecidable manual P 341 49.9167 50 0.1 72
IV.SLCN.HHZ. 2021-12-16T06:01:38.00 0.3 undecidable manual P 358 36.6411 50 0.56 66
IV.CMPR.HNE. 2021-12-16T06:01:37.87 0.3 undecidable manual P 315 40.9257 50 -0.22 70
IV.SCHR.EHZ. 2021-12-16T06:01:37.70 0.1 undecidable manual P 67 39.4272 50 -0.18 95
IX.TEGI.HNN.01 2021-12-16T06:01:37.56 0.3 undecidable manual P 345 36.741 50 0.11 73
IV.GRIS.EHE. 2021-12-16T06:01:37.44 0.1 undecidable manual P 154 39.5271 50 -0.44 90
IV.MMN.HHN. 2021-12-16T06:01:37.27 0.3 undecidable manual P 123 34.6431 50 0.14 72
IV.MCEL.HHZ. 2021-12-16T06:01:36.82 0.1 undecidable manual P 24 32.1456 50 0.07 99
IV.SIRI.HHZ. 2021-12-16T06:01:35.38 0.1 positive manual P 54 23.0547 50 0.04 98
IV.MTSN.HHZ. 2021-12-16T06:01:35.66 0.1 undecidable manual P 21 24.5532 50 0.09 98
IV.MGR.HHZ. 2021-12-16T06:01:35.41 0.3 undecidable manual S 317 11.7771 132 -0.34 75
IV.BULG.HHZ. 2021-12-16T06:01:35.54 0.1 positive manual P 275 22.9548 50 0.2 96
IV.MGR.HHZ. 2021-12-16T06:01:33.48 0.1 undecidable manual P 317 11.7771 132 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MGR.HNE. ML:2.3 0.0022400000000000002 0.14 AML other m 2021-12-16T06:01:35.64
IV.MGR.HHE. ML:2.4 0.002665 0.18 AML other m 2021-12-16T06:01:35.66
IV.MGR.HHN. ML:2.3 0.00212 0.14 AML other m 2021-12-16T06:01:35.67
IV.MGR.HNN. ML:2.3 0.002355 0.14 AML other m 2021-12-16T06:01:35.67
IV.BULG.HHN. ML:1.7 0.00035150000000000003 0.34 AML other m 2021-12-16T06:01:39.79
IV.BULG.HNN. ML:1.7 0.00033499999999999996 0.34 AML other m 2021-12-16T06:01:39.80
IV.BULG.HNE. ML:1.7 0.00029600000000000004 0.28 AML other m 2021-12-16T06:01:40.29
IV.BULG.HHE. ML:1.7 0.000313 0.28 AML other m 2021-12-16T06:01:40.29
IV.MTSN.HHE. ML:1.7 0.0002965 0.22 AML other m 2021-12-16T06:01:40.82
IV.SIRI.HHN. ML:2.0 0.0006695 0.28 AML other m 2021-12-16T06:01:41.29
IV.SIRI.HNN. ML:2.0 0.0006425000000000001 0.28 AML other m 2021-12-16T06:01:41.29
IV.SIRI.HNE. ML:1.8 0.000439 0.28 AML other m 2021-12-16T06:01:41.44
IV.SIRI.HHE. ML:1.8 0.00044050000000000003 0.28 AML other m 2021-12-16T06:01:41.44
IV.MTSN.HNE. ML:1.7 0.000311 0.68 AML other m 2021-12-16T06:01:41.82
IV.MTSN.HHN. ML:1.8 0.000384 0.2 AML other m 2021-12-16T06:01:41.53
IV.MTSN.HNN. ML:1.8 0.000363 0.22 AML other m 2021-12-16T06:01:41.54
IV.MCEL.HHE. ML:1.6 0.0001825 0.18 AML other m 2021-12-16T06:01:42.28
IV.MCEL.HHN. ML:1.6 0.00016599999999999997 0.42 AML other m 2021-12-16T06:01:42.53
IV.MCEL.HNE. ML:2.1 0.0005875 1.3 AML other m 2021-12-16T06:01:42.18
IV.MMN.HHN. ML:1.8 0.000273 0.94 AML other m 2021-12-16T06:01:43.04
IV.SCHR.EHN. ML:1.4 0.0000838 1.74 AML other m 2021-12-16T06:01:43.08
IV.SCHR.EHE. ML:1.4 0.0000784 0.24 AML other m 2021-12-16T06:01:44.44
IV.MMN.HHE. ML:1.6 0.0001805 0.2 AML other m 2021-12-16T06:01:44.48
IV.GRIS.EHE. ML:1.5 0.00011549999999999999 1.56 AML other m 2021-12-16T06:01:45.80
IV.MCEL.HNN. ML:2.0 0.000402 1.34 AML other m 2021-12-16T06:01:45.81
IV.GRIS.EHN. ML:1.6 0.00013000000000000002 0.16 AML other m 2021-12-16T06:01:45.49
IV.SLCN.HHE. ML:1.9 0.00029200000000000005 1 AML other m 2021-12-16T06:01:47.91
IV.SLCN.HHN. ML:1.7 0.000194 0.98 AML other m 2021-12-16T06:01:48.13
IV.CDRU.HHE. ML:1.9 0.00016849999999999998 0.82 AML other m 2021-12-16T06:01:48.41
IV.CDRU.HHN. ML:1.5 0.00006415 0.14 AML other m 2021-12-16T06:01:48.43
IX.SRN3.HHE.02 ML:1.7 0.00013900000000000002 0.7 AML other m 2021-12-16T06:01:49.31
IX.SRN3.HHN.02 ML:1.8 0.000147 0.3 AML other m 2021-12-16T06:01:50.10
IV.CET2.HHE. ML:1.6 0.00007555000000000001 0.94 AML other m 2021-12-16T06:01:52.05
IV.CET2.HHN. ML:1.8 0.000124 1 AML other m 2021-12-16T06:01:52.32
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