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Light earthquake: M4 quake has struck near Chichi-shima in Japan

Posted by admin on September 12, 2015 0 Comments

Earthquake location 27.5282S, 140.2844WA light earthquake magnitude 4 (ml/mb) has struck on Saturday, 197 km WNW of Chichi-shima, Japan (122 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 140.2844° East, 27.5282° North, depth 357.82 km. Exact time and date of earthquake 15/08/15 / 2015-08-15 10:08:21 / August 15, 2015 @ 10:08 am UTC/GMT. The 4-magnitude earthquake has occurred at 19:08:21 / 7:08 pm (local time epicenter). The earthquake was roughly at a depth of 357.82 km (222 miles). Unique identifier: us20003fb8. Ids that are associated to the event: us20003fb8.

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

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: 197 km WNW of Chichi-shima, Japan.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 140.2844° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 27.5282° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 357.82 km Depth of the event in kilometers.
Place 197km WNW of Chichi-shima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-08-15 10:08:21 Time when the event occurred. UTC/GMT
Updated 2015-09-12 08:38:56 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 246 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 1.744 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 97 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 us20003fb8 Id of event.
Event Code 20003fb8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003fb8, A comma-separated list of event ids that are associated to an event.

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