A magnitude ML 0.5 earthquake occured in region: 8 km W San Gimignano (SI), on
and geographic coordinates (lat, lon) 43.4580, 10.9520 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 |
---|---|---|---|---|
San Gimignano | SI | 8 | 7820 | 7820 |
Gambassi Terme | FI | 9 | 4870 | 12690 |
Volterra | PI | 10 | 10519 | 23209 |
Montaione | FI | 11 | 3700 | 26909 |
Certaldo | FI | 12 | 16121 | 43030 |
Colle di Val d'Elsa | SI | 14 | 21620 | 64650 |
Casole d'Elsa | SI | 15 | 3897 | 68547 |
Poggibonsi | SI | 16 | 29196 | 97743 |
Castelfiorentino | FI | 17 | 17504 | 115247 |
Montecatini Val di Cecina | PI | 18 | 1749 | 116996 |
Lajatico | PI | 18 | 1336 | 118332 |
Pomarance | PI | 19 | 5897 | 124229 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-08-19 20:07:25 |
43.4585 | 10.9517 | 8 | 2021-08-19 20:18:46 |
Sala Sismica INGV-Roma | 94387001 |
Field | Value |
---|---|
Time (UTC) | 2021-08-19 20:07:25 ± 0.11 |
Latitude | 43.4585 ± 0.0072 |
Longitude | 10.9517 ± 0.0074 |
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 | 94387001 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 862 |
Semi-minor axis of confidence ellipse (meter) | 469 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 151 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 860.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 134 |
Number of associated phases, regardless of their use for origin computation | 14 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.26 |
Epicentral distance of station closest to the epicenter (degree) | 0.22303 |
Epicentral distance of station farthest from the epicenter (degree) | 0.56208 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.3 |
Num. used stations | 5 |
Type of magnitude | ML |
Reference to an origin | 94387001 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-19 20:18:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RUFI.EHZ. | 2021-08-19T20:07:45.49 | 0.3 | undecidable | manual | S | 47 | 61.494 | 50 | 0.18 | 68 |
IV.BOSL.HHZ. | 2021-08-19T20:07:45.72 | 0.3 | undecidable | manual | S | 33 | 62.3931 | 50 | 0.16 | 68 |
IV.CRMI.HHZ. | 2021-08-19T20:07:38.64 | 0.3 | undecidable | manual | S | 3 | 37.4292 | 50 | -0.26 | 70 |
IV.FROS.CHN. | 2021-08-19T20:07:37.19 | 0.1 | undecidable | manual | S | 149 | 32.1456 | 103 | 0.04 | 98 |
IV.BOSL.HHZ. | 2021-08-19T20:07:36.71 | 0.6 | undecidable | manual | P | 33 | 62.3931 | 50 | -0.45 | 43 |
IV.RUFI.EHZ. | 2021-08-19T20:07:36.80 | 0.6 | undecidable | manual | P | 47 | 61.494 | 50 | -0.22 | 45 |
IV.MAGO.CHZ. | 2021-08-19T20:07:36.45 | 0.3 | undecidable | manual | S | 229 | 31.3464 | 104 | -0.43 | 68 |
IV.CSNT.HHZ. | 2021-08-19T20:07:35.21 | 0.1 | undecidable | manual | S | 86 | 27.2505 | 106 | -0.3 | 94 |
IV.OSSC.HHZ. | 2021-08-19T20:07:34.68 | 0.1 | undecidable | manual | S | 73 | 24.753 | 107 | 0.02 | 100 |
IV.CRMI.HHZ. | 2021-08-19T20:07:33.43 | 0.1 | undecidable | manual | P | 3 | 37.4292 | 50 | 0.12 | 96 |
IV.FROS.CHN. | 2021-08-19T20:07:32.27 | 0.1 | undecidable | manual | P | 149 | 32.1456 | 103 | -0.03 | 98 |
IV.MAGO.CHZ. | 2021-08-19T20:07:32.72 | 0.3 | undecidable | manual | P | 229 | 31.3464 | 104 | 0.57 | 65 |
IV.OSSC.HHZ. | 2021-08-19T20:07:31.12 | 0.1 | undecidable | manual | P | 73 | 24.753 | 107 | 0.25 | 95 |
IV.CSNT.HHZ. | 2021-08-19T20:07:31.42 | 0.1 | undecidable | manual | P | 86 | 27.2505 | 106 | 0.06 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.OSSC.HHE. | ML:0.9 | 0.00004475 | 0.44 | AML | other | m | 2021-08-19T20:07:35.08 |
IV.CSNT.HHE. | ML:0.6 | 0.000017500000000000002 | 0.46 | AML | other | m | 2021-08-19T20:07:35.62 |
IV.OSSC.HHN. | ML:0.6 | 0.000026500000000000004 | 0.42 | AML | other | m | 2021-08-19T20:07:37.37 |
IV.CSNT.HHN. | ML:0.3 | 0.000012077585 | 0.1792 | AML | other | m | 2021-08-19T20:07:35.90 |
IV.CRMI.HHE. | ML:0.1 | 0.000005114976 | 0.32 | AML | other | m | 2021-08-19T20:07:39.71 |