A magnitude ML 1.1 earthquake occured in region: 3 km W Palazzuolo sul Senio (FI), on
and geographic coordinates (lat, lon) 44.1160, 11.5160 at 10 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
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 |
---|---|---|---|---|
Palazzuolo sul Senio | FI | 3 | 1154 | 1154 |
Marradi | FI | 9 | 3139 | 4293 |
Firenzuola | FI | 11 | 4726 | 9019 |
Castel del Rio | BO | 11 | 1246 | 10265 |
Casola Valsenio | RA | 15 | 2617 | 12882 |
Fontanelice | BO | 16 | 1943 | 14825 |
Tredozio | FC | 19 | 1212 | 16037 |
Borgo Tossignano | BO | 19 | 3288 | 19325 |
Monghidoro | BO | 20 | 3749 | 23074 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.1 | 2021-04-22 21:37:01 |
44.1157 | 11.5163 | 10 | 2021-07-12 16:55:16 |
Bollettino Sismico Italiano INGV | 91712671 |
Reviewed Rev100 |
ML 1.2 | 2021-04-22 21:37:00 |
44.1202 | 11.5918 | 3 | 2021-04-22 21:41:44 |
Sala Sismica INGV-Roma | 89373091 |
Field | Value |
---|---|
Time (UTC) | 2021-04-22 21:37:01 ± 0.27 |
Latitude | 44.1157 ± 0.0045 |
Longitude | 11.5163 ± 0.0063 |
Depth (km) | 10 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 91712671 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 515 |
Semi-minor axis of confidence ellipse (meter) | 330 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 157 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 510.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 98 |
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) | 0.22 |
Epicentral distance of station closest to the epicenter (degree) | 0.09353 |
Epicentral distance of station farthest from the epicenter (degree) | 0.23832 |
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 | 1.2 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 89373091 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-22 21:41:44 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 91712671 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-06-22 14:33:30 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.BRIS.HNZ. | 2021-04-22T21:37:10.40 | 0.6 | undecidable | manual | S | 59 | 23.2545 | 112 | 0.61 | 42 |
IV.RINC.HHZ. | 2021-04-22T21:37:10.80 | 0.6 | undecidable | manual | S | 164 | 26.4513 | 110 | -0.01 | 49 |
IV.SEI.HHZ. | 2021-04-22T21:37:07.13 | 0.3 | undecidable | manual | S | 242 | 14.2746 | 124 | 0.12 | 73 |
IV.RONT.HHZ. | 2021-04-22T21:37:07.56 | 0.6 | undecidable | manual | S | 206 | 15.0738 | 122 | 0.31 | 47 |
IV.LMD.HHZ. | 2021-04-22T21:37:07.19 | 0.6 | undecidable | manual | S | 106 | 15.7731 | 121 | -0.27 | 47 |
IV.BRIS.HNZ. | 2021-04-22T21:37:06.19 | 0.3 | undecidable | manual | P | 59 | 23.2545 | 112 | 0.09 | 72 |
IV.RINC.HHZ. | 2021-04-22T21:37:06.35 | 0.3 | undecidable | manual | P | 164 | 26.4513 | 110 | -0.33 | 69 |
IV.VISG.HHZ. | 2021-04-22T21:37:05.72 | 0.3 | undecidable | manual | S | 321 | 10.3785 | 132 | -0.24 | 72 |
IV.LMD.HHZ. | 2021-04-22T21:37:04.62 | 0.3 | undecidable | manual | P | 106 | 15.7731 | 121 | -0.13 | 73 |
IV.SEI.HHZ. | 2021-04-22T21:37:04.48 | 0.1 | positive | manual | P | 242 | 14.2746 | 124 | -0.02 | 100 |
IV.RONT.HHZ. | 2021-04-22T21:37:04.77 | 0.1 | undecidable | manual | P | 206 | 15.0738 | 122 | 0.14 | 97 |
IV.VISG.HHZ. | 2021-04-22T21:37:03.85 | 0.1 | negative | manual | P | 321 | 10.3785 | 132 | -0.03 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VISG.HHE. | ML:0.9 | 0.0001086 | 0.42 | AML | other | m | 2021-04-22T21:37:05.77 |
IV.VISG.HHN. | ML:0.9 | 0.00010680000000000001 | 1.36 | AML | other | m | 2021-04-22T21:37:05.98 |
IV.SEI.HHN. | ML:1.6 | 0.00037 | 0.22 | AML | other | m | 2021-04-22T21:37:07.38 |
IV.SEI.HHE. | ML:1.1 | 0.0001265 | 0.32 | AML | other | m | 2021-04-22T21:37:07.74 |
IV.RONT.HHE. | ML:1.2 | 0.0001565 | 0.28 | AML | other | m | 2021-04-22T21:37:08.51 |
IV.RONT.HHN. | ML:1.2 | 0.00013350000000000002 | 1.62 | AML | other | m | 2021-04-22T21:37:08.18 |