A magnitude ML 0.9 earthquake occured in region: 11 km NE Courmayeur (AO), on
and geographic coordinates (lat, lon) 45.8780, 7.0370 at 10 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 | 11 | 2807 | 2807 |
Saint-Rhémy-en-Bosses | AO | 13 | 338 | 3145 |
Pré-Saint-Didier | AO | 13 | 1050 | 4195 |
Morgex | AO | 13 | 2104 | 6299 |
La Salle | AO | 15 | 2087 | 8386 |
Saint-Oyen | AO | 15 | 203 | 8589 |
Etroubles | AO | 17 | 501 | 9090 |
La Thuile | AO | 19 | 761 | 9851 |
Allein | AO | 20 | 229 | 10080 |
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 | 2021-08-04 19:16:57 |
45.8778 | 7.0368 | 10 | 2021-08-04 19:26:51 |
Sala Sismica INGV-Roma | 93684641 |
Field | Value |
---|---|
Time (UTC) | 2021-08-04 19:16:57 ± 0.2 |
Latitude | 45.8778 ± 0.0117 |
Longitude | 7.0368 ± 0.0271 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 93684641 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 2026 |
Semi-minor axis of confidence ellipse (meter) | 1325 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 271 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 2030.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 167 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.4 |
Epicentral distance of station closest to the epicenter (degree) | 0.07914 |
Epicentral distance of station farthest from the epicenter (degree) | 0.46225 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.1 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 93684641 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-04 19:26:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.LSD.HHZ. | 2021-08-04T19:17:12.39 | 0.6 | undecidable | manual | S | 171 | 47.0196 | 50 | -0.56 | 42 |
CH.DIX.HHZ. | 2021-08-04T19:17:09.54 | 0.3 | undecidable | manual | S | 52 | 36.3414 | 50 | -0.57 | 64 |
GU.CIRO.HHZ. | 2021-08-04T19:17:07.51 | 1.0 | undecidable | manual | P | 126 | 51.3153 | 50 | 0.31 | 22 |
GU.LSD.HHZ. | 2021-08-04T19:17:06.85 | 0.1 | undecidable | manual | P | 171 | 47.0196 | 50 | 0.31 | 89 |
CH.DIX.HHZ. | 2021-08-04T19:17:05.19 | 0.1 | undecidable | manual | P | 52 | 36.3414 | 50 | 0.29 | 92 |
IV.MRGE.HHZ. | 2021-08-04T19:17:03.00 | 0.3 | undecidable | manual | S | 171 | 12.1767 | 130 | -0.3 | 71 |
GU.BLANC.HHZ. | 2021-08-04T19:17:02.12 | 0.3 | undecidable | manual | S | 245 | 8.7801 | 140 | -0.35 | 71 |
IV.MRGE.HHZ. | 2021-08-04T19:17:01.33 | 0.1 | undecidable | manual | P | 171 | 12.1767 | 130 | 0.37 | 94 |
GU.BLANC.HHZ. | 2021-08-04T19:17:00.58 | 0.1 | undecidable | manual | P | 245 | 8.7801 | 140 | 0.09 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.BLANC.HHE. | ML:0.8 | 0.00008745 | 0.9 | AML | other | m | 2021-08-04T19:17:02.98 |
GU.BLANC.HHN. | ML:0.8 | 0.00008455 | 0.42 | AML | other | m | 2021-08-04T19:17:02.98 |
IV.MRGE.HHE. | ML:0.9 | 0.00009559999999999999 | 0.84 | AML | other | m | 2021-08-04T19:17:03.81 |
IV.MRGE.HHN. | ML:0.9 | 0.0000882 | 0.94 | AML | other | m | 2021-08-04T19:17:03.38 |
CH.DIX.HHE. | ML:1.2 | 0.00005495 | 0.58 | AML | other | m | 2021-08-04T19:17:10.11 |
CH.DIX.HHN. | ML:1.0 | 0.00003525 | 0.8 | AML | other | m | 2021-08-04T19:17:10.24 |