A magnitude ML 1.0 earthquake occured in region: 1 km NW Tredozio (FC), on
and geographic coordinates (lat, lon) 44.0860, 11.7380 at 29 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 |
---|---|---|---|---|
Tredozio | FC | 1 | 1212 | 1212 |
Portico e San Benedetto | FC | 8 | 756 | 1968 |
Rocca San Casciano | FC | 9 | 1910 | 3878 |
Modigliana | FC | 9 | 4560 | 8438 |
Marradi | FI | 10 | 3139 | 11577 |
Premilcuore | FC | 13 | 799 | 12376 |
Dovadola | FC | 13 | 1653 | 14029 |
Brisighella | RA | 15 | 7639 | 21668 |
Palazzuolo sul Senio | FI | 16 | 1154 | 22822 |
Galeata | FC | 17 | 2516 | 25338 |
Casola Valsenio | RA | 18 | 2617 | 27955 |
Civitella di Romagna | FC | 18 | 3786 | 31741 |
Predappio | FC | 20 | 6346 | 38087 |
Castrocaro Terme e Terra del Sole | FC | 20 | 6426 | 44513 |
San Godenzo | FI | 20 | 1167 | 45680 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-12-19 03:39:35 |
44.0865 | 11.7382 | 29 | 2021-12-19 04:05:50 |
Sala Sismica INGV-Roma | 98711431 |
Field | Value |
---|---|
Time (UTC) | 2021-12-19 03:39:35 ± 0.21 |
Latitude | 44.0865 ± 0.0054 |
Longitude | 11.7382 ± 0.0088 |
Depth (km) | 29 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 98711431 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 799 |
Semi-minor axis of confidence ellipse (meter) | 71 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 54 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 800.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 149 |
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) | 0.17 |
Epicentral distance of station closest to the epicenter (degree) | 0.13939 |
Epicentral distance of station farthest from the epicenter (degree) | 0.29768 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.1 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 98711431 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-19 04:05:50 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ASQU.HHZ. | 2021-12-19T03:39:48.09 | 0.3 | undecidable | manual | S | 173 | 32.4453 | 127 | 0.13 | 72 |
IV.SEI.HHZ. | 2021-12-19T03:39:47.52 | 0.3 | undecidable | manual | S | 263 | 30.4473 | 129 | -0.03 | 73 |
IV.RUFI.EHN. | 2021-12-19T03:39:47.87 | 0.3 | undecidable | manual | S | 214 | 33.0447 | 126 | -0.23 | 70 |
IV.VISG.HHZ. | 2021-12-19T03:39:46.83 | 0.3 | undecidable | manual | S | 295 | 26.751 | 133 | 0.04 | 74 |
IV.BRIS.HHZ. | 2021-12-19T03:39:45.00 | 0.3 | undecidable | manual | S | 8 | 15.4734 | 149 | 0.11 | 74 |
IV.SFI.EHZ. | 2021-12-19T03:39:45.91 | 0.1 | undecidable | manual | S | 157 | 21.9669 | 139 | 0 | 100 |
IV.RUFI.EHN. | 2021-12-19T03:39:42.28 | 1.0 | undecidable | manual | P | 214 | 33.0447 | 126 | -0.35 | 23 |
IV.SEI.HHZ. | 2021-12-19T03:39:42.51 | 0.1 | undecidable | manual | P | 263 | 30.4473 | 129 | 0.2 | 95 |
IV.ASQU.HHZ. | 2021-12-19T03:39:42.78 | 0.1 | undecidable | manual | P | 173 | 32.4453 | 127 | 0.23 | 94 |
IV.SFI.EHZ. | 2021-12-19T03:39:41.27 | 0.1 | undecidable | manual | P | 157 | 21.9669 | 139 | -0.1 | 98 |
IV.VISG.HHZ. | 2021-12-19T03:39:41.81 | 0.1 | undecidable | manual | P | 295 | 26.751 | 133 | -0.07 | 98 |
IV.BRIS.HHZ. | 2021-12-19T03:39:40.53 | 0.3 | undecidable | manual | P | 8 | 15.4734 | 149 | -0.25 | 72 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SEI.HHE. | ML:1.0 | 0.0000322 | 0.3 | AML | other | m | 2021-12-19T03:39:48.70 |
IV.SEI.HHN. | ML:1.0 | 0.0000346 | 0.26 | AML | other | m | 2021-12-19T03:39:48.64 |