A magnitude ML 0.9 (quarry blast) earthquake occured in region: 4 km E Casola Valsenio (RA), on
and geographic coordinates (lat, lon) 44.2100, 11.6700 at 0 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
Event type: quarry blast.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 |
---|---|---|---|---|
Casola Valsenio | RA | 4 | 2617 | 2617 |
Brisighella | RA | 8 | 7639 | 10256 |
Riolo Terme | RA | 9 | 5720 | 15976 |
Borgo Tossignano | BO | 10 | 3288 | 19264 |
Fontanelice | BO | 10 | 1943 | 21207 |
Casalfiumanese | BO | 11 | 3438 | 24645 |
Modigliana | FC | 12 | 4560 | 29205 |
Castel del Rio | BO | 13 | 1246 | 30451 |
Palazzuolo sul Senio | FI | 15 | 1154 | 31605 |
Marradi | FI | 16 | 3139 | 34744 |
Tredozio | FC | 16 | 1212 | 35956 |
Castel Bolognese | RA | 16 | 9554 | 45510 |
Imola | BO | 16 | 69797 | 115307 |
Dozza | BO | 17 | 6652 | 121959 |
Faenza | RA | 19 | 58541 | 180500 |
Dovadola | FC | 20 | 1653 | 182153 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.9 | 2023-04-07 10:02:43 |
44.2103 | 11.6703 | 1 | 2024-03-01 17:18:04 |
Bollettino Sismico Italiano INGV | 116510421 |
Field | Value |
---|---|
Time (UTC) | 2023-04-07 10:02:43 ± 0.16 |
Latitude | 44.2103 ± 0.0099 |
Longitude | 11.6703 ± 0.0113 |
Depth (km) | 1 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | quarry blast |
Origin ID | 116510421 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1150 |
Semi-minor axis of confidence ellipse (meter) | 930 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 12 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1150.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 138 |
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) | 0.32 |
Epicentral distance of station closest to the epicenter (degree) | 0.07015 |
Epicentral distance of station farthest from the epicenter (degree) | 0.35074 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 116510421 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2024-01-18 10:08:06 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SFI.HNN. | 2023-04-07T10:02:50.25 | 0.3 | undecidable | manual | P | 157 | 36.741 | 91 | -0.34 | 68 |
IV.BOSL.HHE. | 2023-04-07T10:02:50.60 | 0.6 | undecidable | manual | P | 217 | 38.9277 | 91 | -0.44 | 44 |
IV.VMGN.HHN. | 2023-04-07T10:02:49.22 | 0.1 | undecidable | manual | P | 201 | 30.4473 | 91 | -0.11 | 96 |
IV.SEI.HHZ. | 2023-04-07T10:02:49.45 | 0.3 | undecidable | manual | P | 235 | 30.2475 | 91 | 0.15 | 71 |
IV.MTRZ.HHZ. | 2023-04-07T10:02:47.92 | 0.1 | positive | manual | P | 300 | 22.5552 | 91 | 0.16 | 96 |
IV.LMD.HHZ. | 2023-04-07T10:02:46.81 | 0.1 | undecidable | manual | P | 169 | 15.0738 | 92 | 0.56 | 88 |
IV.VISG.HHZ. | 2023-04-07T10:02:46.84 | 0.3 | undecidable | manual | P | 263 | 18.9699 | 92 | -0.19 | 72 |
IV.BRIS.HHZ. | 2023-04-07T10:02:44.72 | 0.1 | positive | manual | P | 78 | 7.7811 | 94 | -0.08 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MTRZ.HHN. | ML:0.9 | 0.000056548575 | 0.7232 | AML | other | m | 2023-04-07T10:02:51.58 |
IV.MTRZ.HHE. | ML:0.8 | 0.000052337305 | 0.5632 | AML | other | m | 2023-04-07T10:02:52.11 |