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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.7 quake has struck near Iwo Jima in Japan

Posted by admin on October 16, 2018 0 Comments

Earthquake location 23.6085S, 143.815WA light earthquake with magnitude 4.7 (ml/mb) was reported 283 km ESE of Iwo Jima, Japan (176 miles) on Tuesday. Exact location of event, depth 12.11 km, 143.815° East, 23.6085° North. The earthquake was roughly at a depth of 12.11 km (8 miles). The temblor was reported at 00:44:46 / 12:44 am (local time epicenter). Event id: us1000hb63. Ids that are associated to the earthquake: us1000hb63. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 08/10/18 / 2018-10-08 14:44:46 / October 8, 2018 @ 2:44 pm.

In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days four and in the last 365 days fifty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. 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: 283 km ESE of Iwo Jima, Japan.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude 143.815° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 23.6085° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.11 km Depth of the event in kilometers.
Place 283km ESE of Iwo Jima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-08 14:44:46 Time when the event occurred. UTC/GMT
Updated 2018-10-16 13:31:33 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 340 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 3.772 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 114 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 us1000hb63 Id of event.
Event Code 1000hb63 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hb63, A comma-separated list of event ids that are associated to an event.

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