A magnitude ML 0.9 earthquake occured in region: 2 km W Tredozio (FC), on
and geographic coordinates (lat, lon) 44.0780, 11.7190 at 28 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 | 2 | 1212 | 1212 |
Portico e San Benedetto | FC | 8 | 756 | 1968 |
Marradi | FI | 8 | 3139 | 5107 |
Rocca San Casciano | FC | 10 | 1910 | 7017 |
Modigliana | FC | 11 | 4560 | 11577 |
Premilcuore | FC | 12 | 799 | 12376 |
Palazzuolo sul Senio | FI | 14 | 1154 | 13530 |
Dovadola | FC | 14 | 1653 | 15183 |
Brisighella | RA | 17 | 7639 | 22822 |
Galeata | FC | 18 | 2516 | 25338 |
Casola Valsenio | RA | 18 | 2617 | 27955 |
San Godenzo | FI | 19 | 1167 | 29122 |
Civitella di Romagna | FC | 19 | 3786 | 32908 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-05-23 23:29:18 |
44.0782 | 11.7188 | 29 | 2021-05-23 23:37:22 |
Sala Sismica INGV-Roma | 90435551 |
Field | Value |
---|---|
Time (UTC) | 2021-05-23 23:29:18 ± 0.38 |
Latitude | 44.0782 ± 0.0135 |
Longitude | 11.7188 ± 0.0188 |
Depth (km) | 29 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 90435551 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1303 |
Semi-minor axis of confidence ellipse (meter) | 1044 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 232 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1360.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 139 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.28 |
Epicentral distance of station closest to the epicenter (degree) | 0.00809 |
Epicentral distance of station farthest from the epicenter (degree) | 0.23203 |
Number of stations at which the event was observed | 4 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 90435551 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-05-23 23:37:22 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SFI.EHZ. | 2021-05-23T23:29:29.01 | 0.3 | undecidable | manual | S | 152 | 21.7671 | 139 | 0.21 | 74 |
IV.VISG.HHZ. | 2021-05-23T23:29:29.75 | 0.6 | undecidable | manual | S | 299 | 25.752 | 133 | 0.21 | 48 |
IV.BRIS.HHZ. | 2021-05-23T23:29:28.37 | 0.6 | undecidable | manual | S | 13 | 16.6722 | 147 | 0.4 | 47 |
IV.LMD.HHZ. | 2021-05-23T23:29:26.40 | 0.3 | undecidable | manual | S | 265 | 0.8991 | 178 | -0.25 | 75 |
IV.SFI.EHZ. | 2021-05-23T23:29:24.46 | 0.1 | undecidable | manual | P | 152 | 21.7671 | 139 | 0.16 | 99 |
IV.VISG.HHZ. | 2021-05-23T23:29:24.78 | 0.1 | undecidable | manual | P | 299 | 25.752 | 133 | 0.05 | 100 |
IV.BRIS.HHZ. | 2021-05-23T23:29:23.67 | 0.1 | undecidable | manual | P | 13 | 16.6722 | 147 | -0.15 | 100 |
IV.LMD.HHZ. | 2021-05-23T23:29:22.76 | 0.1 | positive | manual | P | 265 | 0.8991 | 178 | -0.31 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.LMD.HHN. | ML:1.0 | 0.0000579 | 0.26 | AML | other | m | 2021-05-23T23:29:26.68 |
IV.LMD.HHE. | ML:1.0 | 0.00004875 | 0.36 | AML | other | m | 2021-05-23T23:29:26.71 |
IV.SFI.EHE. | ML:0.8 | 0.000027109429999999997 | 0.2048 | AML | other | m | 2021-05-23T23:29:29.15 |
IV.VISG.HHE. | ML:0.7 | 0.000021638015 | 1.4592 | AML | other | m | 2021-05-23T23:29:29.83 |