Earthquake with magnitude of ML 1.0 on date 31-08-2011 and time 20:09:58 (Italy) in region 3 km SW Episcopia (PZ)

A magnitude ML 1.0 earthquake occured in region: 3 km SW Episcopia (PZ), on

  • 31-08-2011 18:09:58 (UTC)
  • 31-08-2011 20:09:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.063, 16.071 at 24 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Episcopia PZ 3 1434 1434
Latronico PZ 6 4556 5990
San Severino Lucano PZ 8 1563 7553
Carbone PZ 9 638 8191
Teana PZ 10 613 8804
Castelluccio Superiore PZ 10 824 9628
Fardella PZ 10 627 10255
Viggianello PZ 10 3025 13280
Castelluccio Inferiore PZ 10 2131 15411
Calvera PZ 12 387 15798
Francavilla in Sinni PZ 12 4215 20013
Rotonda PZ 13 3494 23507
Castelsaraceno PZ 13 1384 24891
Chiaromonte PZ 14 1965 26856
San Chirico Raparo PZ 14 1084 27940
Laino Borgo CS 15 1921 29861
Laino Castello CS 16 848 30709
Castronuovo di Sant'Andrea PZ 17 1067 31776
San Martino d'Agri PZ 20 801 32577
Lauria PZ 20 12919 45496

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km SE of Potenza (67122 inhabitants)
81 Km SW of Matera (60436 inhabitants)
87 Km N of Cosenza (67546 inhabitants)
94 Km SW of Altamura (70396 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
Bulletin
Rev1000
Md 1.8
ML 1.0
2011-08-31
18:09:58
40.063 16.071 24 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1279559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-31 18:09:58 ± 0.21
Latitude 40.0630 ± 0.0090
Longitude 16.0710 ± 0.0094
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1279559

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 996
Semi-minor axis of confidence ellipse (meter) 607
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.4029
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1279559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:17:50

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1279559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:17:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MGR.HHN. 2011-08-31T18:10:14.16 0.1 undecidable manual Sg 281 0.4029 0.147 96
IV.MCEL.HHE. 2011-08-31T18:10:12.36 0.1 undecidable manual Sg 322 0.3327 0.226 95
IV.SALB.HHZ. 2011-08-31T18:10:11.00 0.1 undecidable manual Sg 131 0.2806 0.228 98
IV.MTSN.HHZ. 2011-08-31T18:10:11.97 0.1 undecidable manual Sg 310 0.3175 0.238 96
MN.CUC.HHN. 2011-08-31T18:10:08.96 0.6 undecidable manual Sg 251 0.2068 -0.062 50
IV.MMN.HHN. 2011-08-31T18:10:08.93 10.0 undecidable manual Pg 0 0 0
IV.SIRI.HHE. 2011-08-31T18:10:08.27 0.1 undecidable manual Sg 308 0.1961 -0.51 91
IV.MGR.HHN. 2011-08-31T18:10:07.51 0.1 undecidable manual Pg 281 0.4029 -0.125 96
IV.MCEL.HHE. 2011-08-31T18:10:06.54 0.1 undecidable manual Pg 322 0.3327 -0.012 100
IV.MTSN.HHZ. 2011-08-31T18:10:06.33 0.1 undecidable manual Pg 310 0.3175 0.009 100
IV.SALB.HHZ. 2011-08-31T18:10:05.58 0.1 undecidable manual Pg 131 0.2806 -0.187 97
IV.SIRI.HHE. 2011-08-31T18:10:04.42 0.1 undecidable manual Pg 308 0.1961 -0.193 99
MN.CUC.HHN. 2011-08-31T18:10:04.98 0.3 undecidable manual Pg 251 0.2068 0.225 74
IV.SSY.HHN. 2011-08-31T18:09:55.29 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SALB.HHN. ML:1.1 4.5E-5 0.21 AML other m 2011-08-31T18:10:05.58
IV.SALB.HHE. ML:1.1 4.5E-5 0.21 AML other m 2011-08-31T18:10:05.58
IV.MTSN.HHN. ML:1.2 4.5E-5 0.22 AML other m 2011-08-31T18:10:06.33
IV.MTSN.HHE. ML:1.2 6.0E-5 0.42 AML other m 2011-08-31T18:10:06.33
IV.MCEL.HHN. ML:1.1 4.0E-5 0.4 AML other m 2011-08-31T18:10:06.54
IV.MCEL.HHE. Md:1.8 18.8 END duration s
IV.MGR.HHN. Md:1.9 20.8 END duration s
IV.MGR.HHE. ML:0.8 1.5E-5 0.2 AML other m 2011-08-31T18:10:07.51
IV.SSY.HHN. Md:0 10 END duration s
IV.SIRI.HHE. Md:2.1 28.6 END duration s
MN.CUC.HHN. Md:1.6 15.6 END duration s
IV.SALB.HHZ. Md:1.7 17.7 END duration s
IV.MTSN.HHZ. Md:1.6 15 END duration s
IV.MMN.HHN. Md:0 9 END duration s
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