Earthquake with magnitude of ML 0.9 on date 01-08-2020 and time 21:51:29 (Italy) in region 4 km N Saint Rhémy en Bosses (AO)

A magnitude ML 0.9 earthquake occured in region: 4 km N Saint Rhémy en Bosses (AO), on

  • 01-08-2020 19:51:29 (UTC)
  • 01-08-2020 21:51:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.86, 7.17 at 11 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
Saint-Rhémy-en-Bosses AO 4 338 338
Saint-Oyen AO 5 203 541
Etroubles AO 7 501 1042
Allein AO 9 229 1271
Ollomont AO 11 157 1428
Doues AO 11 510 1938
Valpelline AO 13 657 2595
Gignod AO 13 1710 4305
Roisan AO 14 1036 5341
La Salle AO 15 2087 7428
Morgex AO 16 2104 9532
Saint-Nicolas AO 16 311 9843
Oyace AO 16 219 10062
Avise AO 17 305 10367
Sarre AO 17 4927 15294
Saint-Pierre AO 17 3165 18459
Courmayeur AO 17 2807 21266
Arvier AO 18 873 22139
Villeneuve AO 18 1289 23428
Gressan AO 18 3387 26815
Aosta AO 18 34390 61205
Pré-Saint-Didier AO 18 1050 62255
Jovençan AO 18 736 62991
Aymavilles AO 19 2086 65077
Introd AO 19 658 65735
Saint-Christophe AO 19 3432 69167
Bionaz AO 19 236 69403
Charvensod AO 20 2468 71871

Municipalities with at least 50000 inhabitants

An earthquake occurred to
96 Km NW of Torino (890529 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
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
ML 0.9 2020-08-01
19:51:29
45.86 7.17 11 2020-08-01
20:02:13
Sala Sismica INGV-Roma 81556861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-01 19:51:29 ± 0.25
Latitude 45.86 ± 0.01
Longitude 7.17 ± 0.04
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81556861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2819
Semi-minor axis of confidence ellipse (meter) 1142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 2820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.5306
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 81556861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-01 20:02:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2020-08-01T19:53:26.05 3.0 undecidable manual Sg 1.83 0
MN.TRI.HHZ. 2020-08-01T19:52:54.69 3.0 positive manual Pg 15.26 0
IV.PESA.HHZ. 2020-08-01T19:52:44.45 3.0 positive manual Pn 8.45 0
GU.RORO.HHZ. 2020-08-01T19:52:27.09 3.0 undecidable manual Sn -4.03 0
IV.MAGA.HHZ. 2020-08-01T19:52:20.09 3.0 undecidable manual Pg 10.91 0
GU.TRAV.HHZ. 2020-08-01T19:51:48.28 3.0 undecidable manual S 131 0.5306 50 0.05 0
GU.SATI.HHZ. 2020-08-01T19:51:46.22 0.6 undecidable manual S 88 0.4838 50 -0.61 59
GU.LSD.HHZ. 2020-08-01T19:51:44.23 0.6 undecidable manual S 184 0.4029 50 -0.22 66
GU.CIRO.HHZ. 2020-08-01T19:51:43.31 1.0 undecidable manual S 133 0.3786 50 -0.4 32
GU.TRAV.HHZ. 2020-08-01T19:51:41.44 1.0 undecidable manual P 131 0.5306 50 0.92 26
CH.DIX.HHZ. 2020-08-01T19:51:40.01 0.6 undecidable manual S 37 0.2716 50 -0.55 63
GU.SATI.HHZ. 2020-08-01T19:51:40.28 1.0 undecidable manual P 88 0.4838 50 0.57 30
GU.CIRO.HHZ. 2020-08-01T19:51:38.52 0.6 undecidable manual P 133 0.3786 50 0.61 60
GU.LSD.HHZ. 2020-08-01T19:51:38.52 0.6 undecidable manual P 184 0.4029 50 0.19 67
CH.DIX.HHZ. 2020-08-01T19:51:36.41 0.3 undecidable manual P 37 0.2716 50 0.32 100
IV.MRGE.HHZ. 2020-08-01T19:51:35.50 0.6 undecidable manual S 221 0.1214 129 -0.47 66
IV.MRGE.HHZ. 2020-08-01T19:51:33.62 1.0 undecidable manual P 221 0.1214 129 0.17 35
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHN. ML:1.1 0.000141 0.08 AML other m 2020-08-01T19:51:35.79
IV.MRGE.HHE. ML:1 9.085E-5 0.3 AML other m 2020-08-01T19:51:36.02
IV.MAGA.HHN. ML:2.3 3.46E-5 1.1 AML other m 2020-08-01T19:52:20.74
IV.MAGA.HHE. ML:2.5 5.715E-5 0.5 AML other m 2020-08-01T19:52:20.74
CH.DIX.HHE. ML:1.1 5.489979E-5 0.1408 AML other m 2020-08-01T19:51:40.47
CH.DIX.HHN. ML:1 4.4437105E-5 0.1536 AML other m 2020-08-01T19:51:41.22
GU.LSD.HHE. ML:0.7 1.4604905E-5 0.1408 AML other m 2020-08-01T19:51:44.27
GU.LSD.HHN. ML:0.2 6.8899775E-6 0.0512 AML other m 2020-08-01T19:51:44.74
GU.CIRO.HHE. ML:0.2 3.6105622E-6 0.1024 AML other m 2020-08-01T19:51:44.47
GU.CIRO.HHN. ML:0.5 9.0363585E-6 1.6896 AML other m 2020-08-01T19:52:33.35
GU.SATI.HHE. ML:0.6 8.6226465E-6 0.1152 AML other m 2020-08-01T19:51:47.90
GU.SATI.HHN. ML:0.6 9.9558995E-6 0.064 AML other m 2020-08-01T19:51:47.88
GU.TRAV.HHE. ML:0.7 9.437289E-6 0.064 AML other m 2020-08-01T19:51:49.29
GU.TRAV.HHN. ML:1 1.9853655E-5 0.064 AML other m 2020-08-01T19:51:49.57
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