A magnitude ML 0.9 earthquake occured in region: 6 km NW Tredozio (FC), on
and geographic coordinates (lat, lon) 44.1140, 11.6830 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 |
---|---|---|---|---|
Tredozio | FC | 6 | 1212 | 1212 |
Marradi | FI | 7 | 3139 | 4351 |
Modigliana | FC | 10 | 4560 | 8911 |
Palazzuolo sul Senio | FI | 11 | 1154 | 10065 |
Portico e San Benedetto | FC | 13 | 756 | 10821 |
Casola Valsenio | RA | 13 | 2617 | 13438 |
Brisighella | RA | 14 | 7639 | 21077 |
Rocca San Casciano | FC | 14 | 1910 | 22987 |
Dovadola | FC | 16 | 1653 | 24640 |
Premilcuore | FC | 17 | 799 | 25439 |
Castel del Rio | BO | 18 | 1246 | 26685 |
Riolo Terme | RA | 19 | 5720 | 32405 |
Fontanelice | BO | 19 | 1943 | 34348 |
Borgo Tossignano | BO | 20 | 3288 | 37636 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2023-05-21 16:57:21 |
44.1138 | 11.6833 | 10 | 2023-05-21 17:25:29 |
Sala Sismica INGV-Roma | 117562651 |
Field | Value |
---|---|
Time (UTC) | 2023-05-21 16:57:21 ± 0.13 |
Latitude | 44.1138 ± 0.0063 |
Longitude | 11.6833 ± 0.0075 |
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 | 117562651 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 760 |
Semi-minor axis of confidence ellipse (meter) | 327 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 36 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 760.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 218 |
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) | 0.15 |
Epicentral distance of station closest to the epicenter (degree) | 0.19245 |
Epicentral distance of station farthest from the epicenter (degree) | 0.37682 |
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 | 0.9 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 117562651 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-05-21 17:25:29 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MOCL.EHZ. | 2023-05-21T16:57:35.86 | 0.6 | undecidable | manual | S | 253 | 41.8248 | 50 | 0.19 | 47 |
IV.RUFI.EHZ. | 2023-05-21T16:57:33.51 | 0.6 | undecidable | manual | S | 204 | 33.6441 | 50 | 0.04 | 49 |
IV.SFI.EHZ. | 2023-05-21T16:57:31.70 | 0.6 | undecidable | manual | S | 151 | 26.6511 | 50 | 0.09 | 49 |
IV.SEI.HHZ. | 2023-05-21T16:57:31.64 | 0.6 | undecidable | manual | S | 256 | 26.751 | 50 | 0.01 | 50 |
IV.VISG.HHZ. | 2023-05-21T16:57:30.14 | 0.6 | undecidable | manual | S | 293 | 21.4674 | 115 | 0.12 | 49 |
IV.VMGN.HHZ. | 2023-05-21T16:57:29.91 | 0.6 | undecidable | manual | S | 214 | 21.3675 | 115 | -0.07 | 50 |
IV.MOCL.EHZ. | 2023-05-21T16:57:29.99 | 0.3 | undecidable | manual | P | 253 | 41.8248 | 50 | 0.18 | 71 |
IV.RUFI.EHZ. | 2023-05-21T16:57:28.45 | 0.6 | negative | manual | P | 204 | 33.6441 | 50 | -0.09 | 49 |
IV.SEI.HHZ. | 2023-05-21T16:57:27.10 | 0.1 | undecidable | manual | P | 256 | 26.751 | 50 | -0.37 | 93 |
IV.SFI.EHZ. | 2023-05-21T16:57:27.49 | 0.1 | negative | manual | P | 151 | 26.6511 | 50 | 0.03 | 100 |
IV.VMGN.HHZ. | 2023-05-21T16:57:26.58 | 0.6 | negative | manual | P | 214 | 21.3675 | 115 | 0.05 | 50 |
IV.VISG.HHZ. | 2023-05-21T16:57:26.57 | 0.6 | undecidable | manual | P | 293 | 21.4674 | 115 | 0.03 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VISG.HHE. | ML:0.8 | 0.0000402 | 0.52 | AML | other | m | 2023-05-21T16:57:30.51 |
IV.VISG.HHN. | ML:0.7 | 0.00003585 | 0.96 | AML | other | m | 2023-05-21T16:57:30.82 |
IV.SFI.EHE. | ML:0.9 | 0.00004745000000000001 | 0.88 | AML | other | m | 2023-05-21T16:57:31.82 |
IV.SFI.EHN. | ML:1.0 | 0.00006065 | 0.12 | AML | other | m | 2023-05-21T16:57:31.96 |