A magnitude ML 0.7 (quarry blast) earthquake occured in region: 2 km W Erli (SV), on
and geographic coordinates (lat, lon) 44.1390, 8.0810 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 |
---|---|---|---|---|
Erli | SV | 2 | 245 | 245 |
Castelbianco | SV | 3 | 330 | 575 |
Castelvecchio di Rocca Barbena | SV | 3 | 145 | 720 |
Zuccarello | SV | 4 | 309 | 1029 |
Nasino | SV | 5 | 207 | 1236 |
Alto | CN | 7 | 128 | 1364 |
Arnasco | SV | 7 | 645 | 2009 |
Vendone | SV | 7 | 388 | 2397 |
Bardineto | SV | 7 | 756 | 3153 |
Cisano sul Neva | SV | 8 | 2085 | 5238 |
Garessio | CN | 8 | 3244 | 8482 |
Balestrino | SV | 8 | 595 | 9077 |
Onzo | SV | 8 | 219 | 9296 |
Aquila d'Arroscia | IM | 9 | 166 | 9462 |
Ortovero | SV | 9 | 1586 | 11048 |
Ranzo | IM | 10 | 557 | 11605 |
Toirano | SV | 10 | 2644 | 14249 |
Caprauna | CN | 10 | 104 | 14353 |
Calizzano | SV | 11 | 1475 | 15828 |
Boissano | SV | 11 | 2492 | 18320 |
Villanova d'Albenga | SV | 11 | 2657 | 20977 |
Garlenda | SV | 12 | 1254 | 22231 |
Borghetto d'Arroscia | IM | 12 | 456 | 22687 |
Casanova Lerrone | SV | 12 | 749 | 23436 |
Priola | CN | 13 | 701 | 24137 |
Ceriale | SV | 13 | 5561 | 29698 |
Borghetto Santo Spirito | SV | 13 | 4948 | 34646 |
Ormea | CN | 14 | 1617 | 36263 |
Giustenice | SV | 14 | 977 | 37240 |
Vessalico | IM | 14 | 282 | 37522 |
Armo | IM | 14 | 111 | 37633 |
Loano | SV | 14 | 11407 | 49040 |
Albenga | SV | 15 | 24213 | 73253 |
Magliolo | SV | 15 | 974 | 74227 |
Testico | SV | 15 | 196 | 74423 |
Stellanello | SV | 15 | 808 | 75231 |
Tovo San Giacomo | SV | 16 | 2582 | 77813 |
Pietra Ligure | SV | 16 | 8992 | 86805 |
Alassio | SV | 16 | 10934 | 97739 |
Pieve di Teco | IM | 17 | 1338 | 99077 |
Cesio | IM | 17 | 283 | 99360 |
Massimino | SV | 18 | 113 | 99473 |
Rialto | SV | 18 | 564 | 100037 |
Borgio Verezzi | SV | 18 | 2205 | 102242 |
Pornassio | IM | 18 | 685 | 102927 |
Bagnasco | CN | 19 | 1035 | 103962 |
Osiglia | SV | 19 | 444 | 104406 |
Calice Ligure | SV | 19 | 1730 | 106136 |
Caravonica | IM | 19 | 282 | 106418 |
Villa Faraldi | IM | 19 | 444 | 106862 |
Viola | CN | 19 | 391 | 107253 |
Laigueglia | SV | 19 | 1810 | 109063 |
Chiusanico | IM | 20 | 607 | 109670 |
Bormida | SV | 20 | 387 | 110057 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.7 | 2023-04-21 09:50:47 |
44.1392 | 8.0807 | 1 | 2024-03-01 17:18:20 |
Bollettino Sismico Italiano INGV | 125072611 |
Reviewed Rev100 |
ML 0.8 | 2023-04-21 09:50:46 |
44.1057 | 8.1072 | 7 | 2023-04-21 09:59:49 |
Sala Sismica INGV-Roma | 116567931 |
Field | Value |
---|---|
Time (UTC) | 2023-04-21 09:50:47 ± 0.24 |
Latitude | 44.1392 ± 0.0180 |
Longitude | 8.0807 ± 0.0238 |
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 | 125072611 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 2450 |
Semi-minor axis of confidence ellipse (meter) | 1320 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 317 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 2450.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 142 |
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) | 0.51 |
Epicentral distance of station closest to the epicenter (degree) | 0.02878 |
Epicentral distance of station farthest from the epicenter (degree) | 0.52161 |
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 | 0.7 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 125072611 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2024-02-06 14:12:52 |
Field | Value |
---|---|
Value | 0.8 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 116567931 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-04-21 09:59:49 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.PCP.HHZ. | 2023-04-21T09:50:57.91 | 0.6 | undecidable | manual | P | 39 | 57.8976 | 90 | -0.95 | 37 |
GU.ENR.HHZ. | 2023-04-21T09:50:57.15 | 0.6 | undecidable | manual | P | 281 | 53.6019 | 91 | -0.86 | 39 |
IV.QLNO.HHZ. | 2023-04-21T09:50:53.19 | 0.3 | undecidable | manual | P | 46 | 29.4483 | 91 | 0.03 | 78 |
GU.IMI.HHZ. | 2023-04-21T09:50:52.57 | 0.3 | undecidable | manual | P | 211 | 29.4483 | 91 | -0.6 | 68 |
GU.GBOS.HHZ. | 2023-04-21T09:50:52.41 | 0.3 | undecidable | manual | P | 301 | 22.2555 | 91 | 0.68 | 66 |
GU.MGRO.HHZ. | 2023-04-21T09:50:52.09 | 0.3 | undecidable | manual | P | 244 | 24.1536 | 91 | -0.03 | 78 |
GU.CANO.HHZ. | 2023-04-21T09:50:50.48 | 0.3 | undecidable | manual | P | 59 | 14.5743 | 92 | 0.29 | 76 |
GU.RORO.HHZ. | 2023-04-21T09:50:48.32 | 0.1 | undecidable | manual | P | 201 | 3.1968 | 99 | 0.41 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.CANO.HHN. | ML:0.7 | 0.0000613 | 1.7 | AML | other | m | 2023-04-21T09:50:52.85 |
GU.CANO.HHE. | ML:0.9 | 0.00009647418 | 0.416 | AML | other | m | 2023-04-21T09:50:53.01 |
GU.MGRO.HHN. | ML:0.6 | 0.000029121025000000003 | 0.2752 | AML | other | m | 2023-04-21T09:50:57.40 |
GU.MGRO.HHE. | ML:0.7 | 0.00003715 | 0.86 | AML | other | m | 2023-04-21T09:50:59.81 |