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Light earthquake: M4.6 quake has struck near Bulolo in Papua New Guinea


Earthquake location -7.1924S, 146.1379WA light earthquake magnitude 4.6 (ml/mb) has struck on Tuesday, 56 kilometers (35 miles) from Bulolo in Papua New Guinea. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 04/12/17 / 2017-12-04 18:07:20 / December 4, 2017 @ 6:07 pm UTC/GMT. The temblor was reported at 04:07:20 / 4:07 am (local time epicenter). Exact location of event, longitude 146.1379 East, latitude -7.1924 South, depth = 161.1 km. Unique identifier: us1000bl0b. Ids that are associated to the event: us1000bl0b. The earthquake occurred at a depth of 161.1 km (100 miles) below the earth’s surface.

Closest city/cities/towns to epicentrum/hypocenter was Kerema, Wau, Bulolo (min 5000 pop). Country/countries that might be effected, Papua New Guinea (c. 6 065 000 pop). The epicenter was 56 km (35 miles) from Bulolo (c. 16 000 pop), 66 km (41 miles) from Wau (c. 14 600 pop), 94 km (59 miles) from Kerema (c. 5 600 pop).

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has occurred nearby.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 56 km W of Bulolo, Papua New Guinea.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 146.1379° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -7.1924° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 161.1 km Depth of the event in kilometers.
Place 56km W of Bulolo, Papua New Guinea Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-04 18:07:20 Time when the event occurred. UTC/GMT
Updated 2017-12-04 19:00:24 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 326 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.419 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 125 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000bl0b Id of event.
Event Code 1000bl0b An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bl0b, A comma-separated list of event ids that are associated to an event.

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