Earthquake with magnitude of ML 1.6 on date 01-08-2020 and time 14:52:35 (Italy) in region 5 km N Rezzoaglio (GE)

A magnitude ML 1.6 earthquake occured in region: 5 km N Rezzoaglio (GE), on

  • 01-08-2020 12:52:35 (UTC)
  • 01-08-2020 14:52:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.57, 9.39 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rezzoaglio GE 5 995 995
Santo Stefano d'Aveto GE 6 1126 2121
Fontanigorda GE 7 277 2398
Ottone PC 7 516 2914
Gorreto GE 9 97 3011
Rovegno GE 9 554 3565
Montebruno GE 12 240 3805
Ferriere PC 12 1294 5099
Fascia GE 12 81 5180
Cerignale PC 12 127 5307
Zerba PC 13 77 5384
Rondanina GE 14 62 5446
Corte Brugnatella PC 16 586 6032
Propata GE 16 142 6174
Borzonasca GE 17 2049 8223
Favale di Malvaro GE 17 466 8689
Carrega Ligure AL 18 84 8773
Lorsica GE 18 468 9241
Torriglia GE 19 2311 11552
Coli PC 19 879 12431

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Genova (586655 inhabitants)
59 Km SW of Piacenza (102191 inhabitants)
62 Km NW of La Spezia (93959 inhabitants)
71 Km S of Pavia (72576 inhabitants)
72 Km SE of Alessandria (93943 inhabitants)
78 Km E of Savona (61345 inhabitants)
79 Km NW of Carrara (63133 inhabitants)
79 Km W of Parma (192836 inhabitants)
80 Km SW of Cremona (71901 inhabitants)
84 Km NW of Massa (69479 inhabitants)
93 Km SE of Vigevano (63310 inhabitants)
99 Km W of Reggio nell'Emilia (171345 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.6 2020-08-01
12:52:35
44.57 9.39 10 2020-08-01
12:59:53
Sala Sismica INGV-Roma 81547111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-01 12:52:35 ± 0.09
Latitude 44.57 ± 0.01
Longitude 9.39 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81547111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 831
Semi-minor axis of confidence ellipse (meter) 504
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.67989
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81547111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-01 12:59:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLMA.HHZ. 2020-08-01T12:52:56.81 1.0 undecidable manual S 147 0.6178 50 0.14 22
GU.EQUI.HHE. 2020-08-01T12:52:48.78 0.6 undecidable manual P 126 0.6799 50 -0.05 45
IV.PLMA.HHZ. 2020-08-01T12:52:47.33 0.6 undecidable manual P 147 0.6178 50 -0.45 42
GU.PCP.HHZ. 2020-08-01T12:52:47.87 0.3 undecidable manual P 267 0.6016 50 0.38 64
GU.RNCA.HHZ. 2020-08-01T12:52:47.87 0.3 undecidable manual S 252 0.3274 50 -0.19 70
GU.GRAM.HHE. 2020-08-01T12:52:45.92 0.6 undecidable manual P 99 0.4883 50 0.36 44
IV.BOB.HHZ. 2020-08-01T12:52:43.99 0.3 undecidable manual S 12 0.2005 114 -0.09 73
IT.GNV.HGE. 2020-08-01T12:52:43.25 0.6 undecidable manual P 247 0.3543 50 -0.01 48
GU.RNCA.HHZ. 2020-08-01T12:52:42.77 0.1 negative manual P 252 0.3274 50 -0.04 96
GU.GORR.HHE. 2020-08-01T12:52:40.15 0.3 undecidable manual S 297 0.0773 139 -0.01 76
IV.BOB.HHZ. 2020-08-01T12:52:40.45 0.1 positive manual P 12 0.2005 114 -0.06 98
GU.GORR.HHE. 2020-08-01T12:52:38.33 0.1 negative manual P 297 0.0773 139 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GORR.HHN. ML:2.1 0.00161 0.4 AML other m 2020-08-01T12:52:40.43
GU.GORR.HHE. ML:2 0.001375 0.2 AML other m 2020-08-01T12:52:40.32
IV.BOB.HHE. ML:1.8 0.0003865 0.38 AML other m 2020-08-01T12:52:44.24
IV.BOB.HHN. ML:1.6 0.000258 0.28 AML other m 2020-08-01T12:52:44.53
GU.RNCA.HHN. ML:1.6 0.0001515 0.58 AML other m 2020-08-01T12:52:48.64
GU.RNCA.HHE. ML:1.7 0.000211 0.78 AML other m 2020-08-01T12:52:48.65
GU.GRAM.HHE. ML:1.7 0.0001105 0.96 AML other m 2020-08-01T12:52:52.38
GU.GRAM.HHN. ML:1.8 0.0001415 1.58 AML other m 2020-08-01T12:52:53.84
GU.PCP.HHE. ML:1.3 3.7E-5 0.54 AML other m 2020-08-01T12:53:00.38
GU.PCP.HHN. ML:1.4 3.995E-5 0.72 AML other m 2020-08-01T12:53:00.93
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download