A magnitude ML 1.6 earthquake occured in region: 2 km SW Riolo Terme (RA), on
and geographic coordinates (lat, lon) 44.2630, 11.7060 at 21 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 |
---|---|---|---|---|
Riolo Terme | RA | 2 | 5720 | 5720 |
Brisighella | RA | 7 | 7639 | 13359 |
Casola Valsenio | RA | 8 | 2617 | 15976 |
Casalfiumanese | BO | 8 | 3438 | 19414 |
Borgo Tossignano | BO | 9 | 3288 | 22702 |
Castel Bolognese | RA | 10 | 9554 | 32256 |
Imola | BO | 10 | 69797 | 102053 |
Fontanelice | BO | 12 | 1943 | 103996 |
Dozza | BO | 12 | 6652 | 110648 |
Modigliana | FC | 14 | 4560 | 115208 |
Faenza | RA | 14 | 58541 | 173749 |
Solarolo | RA | 16 | 4488 | 178237 |
Castel del Rio | BO | 17 | 1246 | 179483 |
Bagnara di Romagna | RA | 17 | 2429 | 181912 |
Mordano | BO | 17 | 4760 | 186672 |
Castel San Pietro Terme | BO | 18 | 20811 | 207483 |
Castel Guelfo di Bologna | BO | 19 | 4455 | 211938 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.6 | 2018-04-04 07:03:18 |
44.2633 | 11.7057 | 21 | 2019-04-24 14:49:34 |
Bollettino Sismico Italiano INGV | 57307271 |
Reviewed Rev100 |
ML 1.7 | 2018-04-04 07:03:18 |
44.2478 | 11.7322 | 21 | 2018-04-04 07:20:12 |
Sala Sismica INGV-Roma | 55105781 |
Field | Value |
---|---|
Time (UTC) | 2018-04-04 07:03:18 ± 0.37 |
Latitude | 44.2633 ± 0.0117 |
Longitude | 11.7057 ± 0.0251 |
Depth (km) | 21 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 57307271 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1598 |
Semi-minor axis of confidence ellipse (meter) | 1509 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 307 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1600.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 117 |
Number of associated phases, regardless of their use for origin computation | 28 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.45 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.44786 |
Number of stations at which the event was observed | 22 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | 0.2 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 55105781 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2018-04-04 07:20:12 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | 0.2 |
Num. used stations | 15 |
Type of magnitude | ML |
Reference to an origin | 57307271 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2019-02-14 11:38:37 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ERC.EHZ. | 2018-04-04T07:04:53.97 | 3.0 | undecidable | manual | Pg | 19.690001 | 0 | |||
IV.SARZ.HHZ. | 2018-04-04T07:04:37.52 | 3.0 | undecidable | manual | Sg | 16.190001 | 0 | |||
IV.ORI.HHZ. | 2018-04-04T07:04:25.19 | 3.0 | undecidable | manual | Pn | 9.5 | 0 | |||
IV.ZONE.HHZ. | 2018-04-04T07:04:15.43 | 3.0 | undecidable | manual | Sg | 7.86 | 0 | |||
IV.OVO.HHZ. | 2018-04-04T07:04:12.33 | 3.0 | undecidable | manual | Pg | 14.05 | 0 | |||
IV.VBKN.HHZ. | 2018-04-04T07:04:08.30 | 3.0 | negative | manual | Pg | 9.97 | 0 | |||
IV.VVLD.HHZ. | 2018-04-04T07:03:56.81 | 3.0 | negative | manual | Pg | 13.51 | 0 | |||
IV.MRB1.HNZ. | 2018-04-04T07:03:54.49 | 3.0 | undecidable | manual | Pn | -1.79 | 0 | |||
IV.EUCT.HNZ. | 2018-04-04T07:03:50.05 | 3.0 | undecidable | manual | Pn | 6.42 | 0 | |||
IV.SNTG.HHZ. | 2018-04-04T07:03:46.07 | 3.0 | undecidable | manual | Sn | -1.06 | 0 | |||
IV.SENI.HNZ. | 2018-04-04T07:03:39.14 | 3.0 | undecidable | manual | Sn | 0.04 | 0 | |||
IV.SRES.HHZ. | 2018-04-04T07:03:35.97 | 3.0 | undecidable | manual | Pn | -2.62 | 0 | |||
IV.SFI.EHZ. | 2018-04-04T07:03:33.18 | 0.3 | undecidable | manual | S | 164 | 41.3253 | 109 | 0.93 | 54 |
IV.SEI.HHZ. | 2018-04-04T07:03:30.94 | 0.6 | undecidable | manual | S | 230 | 36.0417 | 112 | 0.01 | 49 |
IV.MTRZ.HHZ. | 2018-04-04T07:03:28.92 | 0.6 | undecidable | manual | S | 284 | 22.9548 | 126 | 1.07 | 36 |
IV.LMD.HHZ. | 2018-04-04T07:03:27.33 | 0.1 | undecidable | manual | S | 180 | 20.6682 | 129 | -0.02 | 100 |
IV.RUFI.EHZ. | 2018-04-04T07:03:27.68 | 0.3 | undecidable | manual | P | 198 | 49.7169 | 105 | 0.09 | 70 |
IV.CMPO.HNN. | 2018-04-04T07:03:26.50 | 0.3 | undecidable | manual | P | 13 | 36.0417 | 112 | 0.9 | 56 |
IV.SFI.EHZ. | 2018-04-04T07:03:26.39 | 0.1 | undecidable | manual | P | 164 | 41.3253 | 109 | 0.04 | 95 |
IV.IMOL.EHZ. | 2018-04-04T07:03:25.90 | 0.1 | undecidable | manual | S | 15 | 11.0778 | 148 | 0.25 | 97 |
IV.NDIM.HHZ. | 2018-04-04T07:03:25.52 | 3.0 | positive | manual | Pn | -2.18 | 0 | |||
IV.SEI.HHZ. | 2018-04-04T07:03:25.31 | 0.3 | undecidable | manual | P | 230 | 36.0417 | 112 | -0.28 | 69 |
IV.BRIS.HHZ. | 2018-04-04T07:03:25.02 | 0.1 | undecidable | manual | S | 132 | 6.4935 | 161 | -0.1 | 100 |
IV.LMD.HHZ. | 2018-04-04T07:03:23.03 | 0.1 | positive | manual | P | 180 | 20.6682 | 129 | -0.5 | 90 |
IV.MTRZ.HHZ. | 2018-04-04T07:03:23.73 | 0.1 | undecidable | manual | P | 284 | 22.9548 | 126 | -0.08 | 98 |
IV.IMOL.EHZ. | 2018-04-04T07:03:22.03 | 0.1 | negative | manual | P | 15 | 11.0778 | 148 | -0.52 | 91 |
IV.CPGN.EHZ. | 2018-04-04T07:03:22.67 | 3.0 | undecidable | manual | P | 0.81 | 0 | |||
IV.BRIS.HHZ. | 2018-04-04T07:03:21.80 | 0.1 | positive | manual | P | 132 | 6.4935 | 161 | -0.44 | 93 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.BRIS.HHE. | ML:1.8 | 0.00042672505 | 0.1184 | AML | other | m | 2018-04-04T07:03:25.25 |
IV.BRIS.HNE. | ML:1.7 | 0.00040228805 | 0.1376 | AML | other | m | 2018-04-04T07:03:25.26 |
IV.BRIS.HNN. | ML:1.8 | 0.000428883 | 0.2528 | AML | other | m | 2018-04-04T07:03:25.23 |
IV.BRIS.HHN. | ML:1.6 | 0.0003182147 | 0.1024 | AML | other | m | 2018-04-04T07:03:25.23 |
IV.IMOL.HNE. | ML:2.0 | 0.0006782602500000001 | 0.1696 | AML | other | m | 2018-04-04T07:03:26.36 |
IV.IMOL.HNN. | ML:1.9 | 0.0005492582 | 0.1376 | AML | other | m | 2018-04-04T07:03:27.27 |
IV.LMD.HHN. | ML:1.5 | 0.00017358455 | 0.1408 | AML | other | m | 2018-04-04T07:03:28.27 |
IV.LMD.HHE. | ML:1.4 | 0.0001205561 | 0.32 | AML | other | m | 2018-04-04T07:03:28.79 |
IV.MTRZ.HHN. | ML:1.4 | 0.000127922295 | 0.32 | AML | other | m | 2018-04-04T07:03:30.21 |
IV.MTRZ.HNN. | ML:1.4 | 0.00012090239999999999 | 0.3008 | AML | other | m | 2018-04-04T07:03:30.21 |
IV.SEI.HHN. | ML:2.1 | 0.00041404980000000005 | 0.3008 | AML | other | m | 2018-04-04T07:03:31.79 |
IV.SEI.HHE. | ML:1.6 | 0.00014085340000000003 | 0.3392 | AML | other | m | 2018-04-04T07:03:32.84 |
IV.SFI.EHE. | ML:1.2 | 0.000044939 | 0.3584 | AML | other | m | 2018-04-04T07:03:33.52 |
IV.SFI.EHN. | ML:1.3 | 0.00006127574 | 0.32 | AML | other | m | 2018-04-04T07:03:34.04 |
IV.SFI.HNE. | ML:1.7 | 0.00015407385 | 0.56 | AML | other | m | 2018-04-04T07:03:34.58 |