Earthquake with magnitude of Mwp 6.0 on date 04-12-2021 and time 23:47:57 (UTC) in region North of Halmahera, Indonesia [Sea: Indonesia]

A magnitude Mwp 6.0 earthquake occured in region: North of Halmahera, Indonesia [Sea: Indonesia], on

  • 04-12-2021 23:47:57 (UTC)
  • 05-12-2021 00:47:57 (UTC +01:00) Italian time
  • 05-12-2021 08:47:57 (UTC +09:00) local time in the region of the earthquake (Pacific/Palau)

and geographic coordinates (lat, lon) 4.046, 128.197 at 172 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity
Seismic hazard
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.8
Mwp 6.0

Mwpd 6.1
2021-12-04
23:47:57
4.0465 128.197 172 2021-12-05
00:05:14
Sala Sismica INGV-Roma 98148131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-04 23:47:57
Latitude 4.0465
Longitude 128.1970
Depth (km) 172 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 98148131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5552
Semi-minor axis of confidence ellipse (meter) 2540
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 4802.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 25.0419
Number of associated phases, regardless of their use for origin computation 108
Number of defining phases 108
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.12728
Epicentral distance of station closest to the epicenter (degree) 3.37801
Epicentral distance of station farthest from the epicenter (degree) 67.94391
Number of stations at which the event was observed 102
Number of stations from which data was used for origin computation 102
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 53
Type of magnitude Mwpd
Reference to an origin 98148131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-05 00:05:14

Mwp:6

Field Value
Value 6
Uncertainty 0.2
Num. used stations 64
Type of magnitude Mwp
Reference to an origin 98148131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-05 00:05:14

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 74
Type of magnitude mb
Reference to an origin 98148131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-05 00:05:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.ROCAM.BHZ.00 2021-12-04T23:58:37.85 10.0 positive automatic P 247 67.9439 1.32228 0
IU.CTAO.BHZ.00 2021-12-04T23:58:37.57 10.0 positive automatic S 144 29.9505 4.90383 0
IU.TIXI.BHZ.00 2021-12-04T23:58:34.27 10.0 negative automatic P 0 67.5859 -0.0168485 0.309938
IU.ADK.BHZ.00 2021-12-04T23:58:24.17 10.0 positive automatic P 34 65.94 0.274126 0.330716
AU.MCQ.BHZ.00 2021-12-04T23:58:11.05 10.0 positive automatic P 161 63.8717 0.525229 0.353573
II.SIMI.BHZ.00 2021-12-04T23:58:09.85 10.0 positive automatic P 312 63.6977 0.46087 0
IU.JOHN.BHZ.00 2021-12-04T23:58:02.20 10.0 positive automatic P 73 62.3028 2.00475 0.383588
NZ.ODZ.HHZ.10 2021-12-04T23:57:57.92 10.0 positive automatic P 147 61.9542 0.00441383 0.387516
IU.SNZO.BHZ.00 2021-12-04T23:57:56.00 10.0 positive automatic P 142 62.0195 -1.32793 0.378418
AT.SMY.BHZ. 2021-12-04T23:57:55.96 10.0 positive automatic P 30 61.5416 0.839876 0.389547
NZ.KHZ.HHZ.10 2021-12-04T23:57:55.90 10.0 negative automatic P 143 61.9617 -2.02903 0.398918
II.AAK.BHZ.00 2021-12-04T23:57:53.77 10.0 positive automatic P 317 61.1683 0.879315 0
IU.MAKZ.BHZ.00 2021-12-04T23:57:34.17 10.0 positive automatic P 325 58.4082 0.28593 0.44499
IU.MA2.BHZ.00 2021-12-04T23:57:32.27 10.0 positive automatic P 13 58.1749 0.0426844 0.427649
NZ.OUZ.HHZ.10 2021-12-04T23:57:31.82 10.0 positive automatic P 137 57.8909 1.6195 0.450615
IU.YAK.BHZ.00 2021-12-04T23:57:30.07 10.0 positive automatic P 1 57.9925 -0.851028 0.430282
IU.MIDW.BHZ.00 2021-12-04T23:57:25.15 10.0 positive automatic P 59 56.9984 1.18663 0.415771
IU.PET.BHZ.00 2021-12-04T23:57:09.87 10.0 positive automatic P 22 54.9963 0.101723 0.486006
GE.HMDM.BHZ. 2021-12-04T23:57:09.72 10.0 negative automatic P 275 54.8095 1.31304 0.466691
II.MSVF.BHZ.00 2021-12-04T23:57:03.22 10.0 positive automatic P 116 53.7692 2.18423 0.505276
IU.FUNA.BHZ.00 2021-12-04T23:56:52.70 10.0 positive automatic P 104 52.3821 1.93259 0.521305
II.TLY.BHZ.00 2021-12-04T23:56:46.52 10.0 positive automatic P 341 51.8324 -0.289501 0.51207
AU.NFK.BHZ.00 2021-12-04T23:56:37.72 10.0 positive automatic P 134 50.4805 1.03934 0.514656
II.TAU.BHZ.00 2021-12-04T23:56:33.42 10.0 positive automatic P 162 50.0389 0.0647927 0.540423
GE.MALK.BHZ. 2021-12-04T23:56:15.72 10.0 negative automatic P 278 47.5422 1.3812 0.623688
II.PALK.BHZ.00 2021-12-04T23:56:13.95 10.0 negative automatic P 276 47.3508 1.02007 0.604972
IU.ULN.BHZ.00 2021-12-04T23:56:13.52 10.0 positive automatic P 341 47.4286 -0.201616 0.596614
GE.HALK.BHZ. 2021-12-04T23:56:13.80 10.0 negative automatic P 275 47.3589 0.871938 0.626961
IO.EVN.BHZ. 2021-12-04T23:56:04.70 10.0 negative automatic P 306 46.0392 1.17512 0.325388
AU.LHI.BHZ.00 2021-12-04T23:56:03.75 10.0 positive automatic P 143 46.1281 0.382671 0.618965
ND.ONTNC.BHZ.00 2021-12-04T23:56:00.10 10.0 positive automatic P 127 45.7407 -0.245733 0.611482
G.DZM.BHZ.00 2021-12-04T23:56:00.58 10.0 positive automatic P 127 45.6136 -0.0625136 0.649053
AU.MILA.BHZ.00 2021-12-04T23:55:59.33 10.0 positive automatic P 156 45.4999 0.745023 0.660635
IU.TARA.BHZ.00 2021-12-04T23:55:54.70 10.0 positive automatic P 92 44.7481 2.17312 0.666377
IU.YSS.BHZ.00 2021-12-04T23:55:51.85 10.0 positive automatic P 14 44.7205 -0.475361 0.658944
AU.TOO.BHZ.00 2021-12-04T23:55:51.80 10.0 positive automatic P 160 44.6123 0.251127 0.685383
G.CAN.BHZ.00 2021-12-04T23:55:46.95 10.0 positive automatic P 155 43.9372 0.744076 0.673204
AU.RIV.BHZ. 2021-12-04T23:55:44.92 10.0 positive automatic P 152 43.6381 1.21334 0.662907
G.SANVU.BHZ.00 2021-12-04T23:55:41.30 10.0 positive automatic P 118 43.2501 0.691184 0.68584
ND.KOUNC.BHZ.00 2021-12-04T23:55:39.20 10.0 positive automatic P 126 43.1099 -0.292092 0.672421
AU.ARMA.BHZ. 2021-12-04T23:55:23.87 10.0 positive automatic P 149 41.1006 0.453105 0.726123
IN.SHL.HHZ. 2021-12-04T23:55:22.71 10.0 negative automatic P 305 40.9492 0.717186 0.74316
IU.WAKE.BHZ.00 2021-12-04T23:55:19.05 10.0 positive automatic P 65 40.4788 0.903744 0.696531
II.ERM.BHZ.00 2021-12-04T23:55:16.87 10.0 positive automatic P 17 40.2484 0.614038 0.76052
AU.HTT.BHZ. 2021-12-04T23:55:04.27 10.0 positive automatic P 166 38.824 -0.333068 0.770043
JP.JTM.BHZ. 2021-12-04T23:55:02.00 10.0 positive automatic P 16 38.521 0.020157 0.775986
IU.NWAO.BHZ.00 2021-12-04T23:55:00.42 10.0 negative automatic P 195 38.4032 -0.624037 0.807127
AU.EIDS.BHZ. 2021-12-04T23:54:47.20 10.0 positive automatic P 144 36.855 -0.827661 0.809069
II.COCO.BHZ.00 2021-12-04T23:54:33.30 10.0 negative automatic P 242 35.1474 -0.182843 0.824075
AU.MORW.BHZ. 2021-12-04T23:54:32.02 10.0 positive automatic P 199 35.1105 -1.19483 0.824814
AU.FORT.BHZ.00 2021-12-04T23:54:29.75 10.0 positive automatic P 180 34.8242 -0.99136 0.87107
AU.QLP.BHZ. 2021-12-04T23:54:25.62 10.0 positive automatic P 154 34.3334 -0.918282 0.860456
IU.HNR.BHZ.00 2021-12-04T23:54:25.77 10.0 positive automatic P 113 34.3923 -1.25622 0.801955
IU.MAJO.BHZ.00 2021-12-04T23:54:19.67 10.0 positive automatic P 15 33.7755 -2.09616 0.796209
IU.INCN.BHZ.00 2021-12-04T23:54:18.42 10.0 positive automatic P 358 33.4607 -0.564993 0.878608
JP.JGF.BHZ. 2021-12-04T23:54:11.10 10.0 positive automatic P 14 32.6701 -1.1179 0.895219
G.INU.BHZ.00 2021-12-04T23:54:08.71 10.0 positive automatic P 14 32.3502 -0.646202 0.901983
IU.CHTO.BHZ.00 2021-12-04T23:54:08.70 10.0 negative automatic P 300 32.1599 0.94517 0.916935
JP.JSG.BHZ. 2021-12-04T23:54:06.10 10.0 positive automatic P 16 31.9997 -0.194464 0.868086
GE.LHMI.BHZ. 2021-12-04T23:53:59.82 10.0 negative automatic P 273 31.1656 0.843052 0.885105
JP.JHJ2.BHZ. 2021-12-04T23:53:55.60 10.0 negative automatic P 19 31.0257 -2.16379 0.908627
GE.GSI.BHZ. 2021-12-04T23:53:54.17 10.0 negative automatic P 266 30.7059 -0.787387 0.894555
JP.JTU.BHZ. 2021-12-04T23:53:52.25 10.0 positive automatic P 2 30.5 -0.890002 0.859728
JP.JMN.BHZ. 2021-12-04T23:53:49.85 10.0 positive automatic P 9 30.1515 -0.305206 0.949167
IU.CTAO.BHZ.00 2021-12-04T23:53:48.25 10.0 positive automatic P 144 29.9505 -0.108977 0.963855
RM.SLV.BHZ. 2021-12-04T23:53:43.07 10.0 positive automatic P 308 29.2354 0.980675 0.952381
AU.WRKA.BHZ.00 2021-12-04T23:53:39.80 10.0 positive automatic P 180 29.0828 -0.936045 0.941176
MY.KUM.BHZ. 2021-12-04T23:53:26.67 10.0 negative automatic P 274 27.4813 0.224179 0.909091
JP.JSU.BHZ. 2021-12-04T23:53:26.10 10.0 positive automatic P 4 27.5434 -0.954222 0.97561
GE.BKNI.BHZ. 2021-12-04T23:53:26.47 10.0 negative automatic P 263 27.3854 0.881638 0.952381
MY.IPM.BHZ. 2021-12-04T23:53:23.17 10.0 negative automatic P 272 27.0973 0.111388 0.930233
AU.XMI.BHZ. 2021-12-04T23:53:19.40 10.0 negative automatic P 237 26.6909 -0.0372186 0.952381
GE.MNAI.BHZ. 2021-12-04T23:53:18.82 10.0 negative automatic P 252 26.5819 0.376049 0.930233
JP.JCJ.BHZ. 2021-12-04T23:53:17.05 10.0 positive automatic P 29 26.6392 -1.90365 0.97561
IU.MBWA.BHZ.00 2021-12-04T23:53:17.22 10.0 negative automatic P 198 26.5353 -0.811914 0.97561
GE.PMBI.BHZ. 2021-12-04T23:53:00.82 10.0 negative automatic P 254 24.4878 1.26741 0.851064
II.WRAB.BHZ.00 2021-12-04T23:53:00.70 10.0 positive automatic P 166 24.7319 -1.1295 0.91954
MY.KOM.BHZ. 2021-12-04T23:52:59.97 10.0 negative automatic P 265 24.4201 1.02593 0.97561
JP.JOW.BHZ. 2021-12-04T23:52:44.15 10.0 positive automatic P 0 22.7886 0.024302 0.930233
AU.FITZ.BHZ. 2021-12-04T23:52:38.13 10.0 negative automatic P 186 22.2907 -1.43038 0.963855
JP.JMZ.BHZ. 2021-12-04T23:52:35.85 10.0 negative automatic P 7 21.965 -0.582167 0.952381
IU.TATO.BHZ.00 2021-12-04T23:52:34.22 10.0 negative automatic P 344 21.8953 -1.5041 0.851064
RM.DLV.BHZ. 2021-12-04T23:52:27.82 10.0 negative automatic P 293 21.0458 0.869803 0.952381
JP.YOJ.BHZ. 2021-12-04T23:52:25.95 10.0 positive automatic P 347 21.0216 -0.541914 0.909091
GE.SMRI.BHZ. 2021-12-04T23:52:24.37 10.0 positive automatic P 238 20.9085 -0.950171 0.952381
AU.MANU.BHZ.00 2021-12-04T23:52:17.93 10.0 positive automatic P 107 20.1006 1.22217 0.952381
IU.GUMO.BHZ.00 2021-12-04T23:52:06.35 10.0 positive automatic P 59 19.0187 1.2804 0.97561
GE.JAGI.BHZ. 2021-12-04T23:52:03.97 10.0 negative automatic P 228 18.7835 1.4531 0.909091
AU.KDU.BHZ.00 2021-12-04T23:51:44.38 10.0 positive automatic P 166 17.2633 -1.54788 0.784314
AU.MTN.BHZ.00 2021-12-04T23:51:43.25 10.0 negative automatic P 170 17.1391 -1.32864 0.941176
MY.SBM.BHZ. 2021-12-04T23:51:33.27 10.0 negative automatic P 265 16.0356 0.895297 0.930233
GE.SOEI.BHZ. 2021-12-04T23:51:12.52 10.0 negative automatic P 196 14.3459 0.733727 0.930233
GE.MMRI.BHZ. 2021-12-04T23:51:06.97 10.0 negative automatic P 205 14.0049 -0.405786 0.909091
GE.GENI.BHZ. 2021-12-04T23:51:05.82 10.0 positive automatic P 119 13.6811 2.51279 0.97561
GE.BKB.BHZ. 2021-12-04T23:50:48.62 10.0 negative automatic P 246 12.4056 1.46145 0.952381
GE.SAUI.BHZ. 2021-12-04T23:50:45.97 10.0 negative automatic P 166 12.4201 -1.37448 0.909091
II.KAPI.BHZ.00 2021-12-04T23:50:45.72 10.0 negative automatic P 223 12.3797 -1.13914 0.909091
GE.BNDI.BHZ. 2021-12-04T23:50:00.07 10.0 negative automatic P 169 8.7366 0.755604 0.615385
GE.FAKI.BHZ. 2021-12-04T23:49:52.57 10.0 positive automatic P 150 8.0566 2.20249 0.952381
GE.LUWI.BHZ. 2021-12-04T23:49:40.42 10.0 negative automatic P 227 7.4353 -1.72151 0.833333
GE.SANI.BHZ. 2021-12-04T23:49:27.22 10.0 positive automatic P 200 6.4833 -2.36446 0.97561
IU.DAV.BHZ.00 2021-12-04T23:48:57.25 10.0 positive automatic P 319 3.9909 0.150869 0.963855
GE.TNTI.BHZ. 2021-12-04T23:48:50.07 10.0 positive automatic P 194 3.378 0.755968 0.952381
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download