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Light earthquake: M4.7 quake has struck near Hachijo-jima in Japan

Posted by admin on August 4, 2017 0 Comments

Earthquake location 32.3855S, 142.0141WA light earthquake with magnitude 4.7 (ml/mb) was detected on Friday, 221 km ESE of Hachijo-jima, Japan (137 miles). The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The 4.7-magnitude earthquake was detected at 18:49:07 / 6:49 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us2000a4fu. Unique identifier: us2000a4fu. Exact location of event, depth 10 km, 142.0141° East, 32.3855° North. Exact time and date of event in UTC/GMT: 04/08/17 / 2017-08-04 09:49:07 / August 4, 2017 @ 9:49 am.

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

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 221 km ESE of Hachijo-jima, Japan.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude 142.0141° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 32.3855° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 221km ESE of Hachijo-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 2017-08-04 09:49:07 Time when the event occurred. UTC/GMT
Updated 2017-08-04 13:40:31 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 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 1.991 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 148 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 us2000a4fu Id of event.
Event Code 2000a4fu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a4fu, A comma-separated list of event ids that are associated to an event.

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