A magnitude ML 0.9 earthquake occured in region: 6 km N Courmayeur (AO), on
and geographic coordinates (lat, lon) 45.8430, 6.9810 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Courmayeur | AO | 6 | 2807 | 2807 |
Pré-Saint-Didier | AO | 9 | 1050 | 3857 |
Morgex | AO | 10 | 2104 | 5961 |
La Salle | AO | 13 | 2087 | 8048 |
La Thuile | AO | 14 | 761 | 8809 |
Saint-Rhémy-en-Bosses | AO | 16 | 338 | 9147 |
Saint-Oyen | AO | 18 | 203 | 9350 |
Avise | AO | 19 | 305 | 9655 |
Etroubles | AO | 20 | 501 | 10156 |
No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2020-09-20 02:23:03 |
45.8432 | 6.9812 | 8 | 2020-09-20 02:48:15 |
Sala Sismica INGV-Roma | 83042701 |
Field | Value |
---|---|
Time (UTC) | 2020-09-20 02:23:03 ± 0.13 |
Latitude | 45.8432 ± 0.0099 |
Longitude | 6.9812 ± 0.0116 |
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 | 83042701 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1207 |
Semi-minor axis of confidence ellipse (meter) | 798 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 211 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1210.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 108 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.29 |
Epicentral distance of station closest to the epicenter (degree) | 0.03238 |
Epicentral distance of station farthest from the epicenter (degree) | 0.84896 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 83042701 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2020-09-20 02:48:15 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
CH.GIMEL.HHE. | 2020-09-20T02:23:20.55 | 0.1 | undecidable | manual | P | 325 | 94.239 | 50 | 0.24 | 82 |
GU.LSD.HHZ. | 2020-09-20T02:23:18.25 | 0.6 | undecidable | manual | S | 164 | 44.2224 | 50 | -0.64 | 40 |
GU.TRAV.HHZ. | 2020-09-20T02:23:16.50 | 0.1 | undecidable | manual | P | 121 | 69.7746 | 50 | -0.03 | 89 |
GU.SATI.HHE. | 2020-09-20T02:23:16.56 | 0.1 | undecidable | manual | P | 87 | 68.6757 | 50 | 0.2 | 86 |
GU.LSD.HHZ. | 2020-09-20T02:23:12.71 | 0.6 | negative | manual | P | 164 | 44.2224 | 50 | 0.12 | 46 |
CH.DIX.HHZ. | 2020-09-20T02:23:11.30 | 1.0 | negative | manual | P | 51 | 42.1245 | 50 | -0.97 | 17 |
GU.REMY.HHZ. | 2020-09-20T02:23:09.10 | 0.6 | undecidable | manual | S | 92 | 13.5753 | 121 | -0.34 | 46 |
IV.MRGE.HHZ. | 2020-09-20T02:23:08.83 | 0.6 | undecidable | manual | S | 143 | 10.1787 | 128 | 0.35 | 46 |
GU.REMY.HHZ. | 2020-09-20T02:23:07.10 | 0.1 | positive | manual | P | 92 | 13.5753 | 121 | -0.03 | 99 |
IV.MRGE.HHZ. | 2020-09-20T02:23:06.88 | 0.1 | positive | manual | P | 143 | 10.1787 | 128 | 0.3 | 94 |
GU.BLANC.HHZ. | 2020-09-20T02:23:06.65 | 0.6 | undecidable | manual | S | 272 | 3.5964 | 156 | -0.38 | 47 |
GU.BLANC.HHZ. | 2020-09-20T02:23:05.69 | 0.1 | negative | manual | P | 272 | 3.5964 | 156 | -0.05 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.BLANC.HHN. | ML:1.8 | 0.0008999999999999999 | 0.1 | AML | other | m | 2020-09-20T02:23:06.71 |
GU.BLANC.HHE. | ML:1.7 | 0.000889 | 0.16 | AML | other | m | 2020-09-20T02:23:06.99 |
IV.MRGE.HHE. | ML:1.3 | 0.00026549999999999995 | 0.08 | AML | other | m | 2020-09-20T02:23:09.00 |
IV.MRGE.HHN. | ML:1.4 | 0.0003745 | 1.76 | AML | other | m | 2020-09-20T02:23:09.96 |
GU.REMY.HHN. | ML:0.8 | 0.00007285 | 0.82 | AML | other | m | 2020-09-20T02:23:09.36 |
GU.REMY.HHE. | ML:0.9 | 0.0000864 | 0.34 | AML | other | m | 2020-09-20T02:23:09.76 |
GU.LSD.HHE. | ML:0.8 | 0.00001865 | 0.34 | AML | other | m | 2020-09-20T02:23:18.44 |
GU.LSD.HHN. | ML:0.5 | 0.000011943555500000002 | 1.5808 | AML | other | m | 2020-09-20T02:23:19.24 |