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Light earthquake: M4.4 quake strikes near Hachijo-jima in Japan

Posted by admin on February 25, 2015 0 Comments

Earthquake location 31.2945S, 140.2619WA light earthquake magnitude 4.4 (mg/mb) was reported Wednesday, 203 kilometers (126 miles) from Hachijo-jima in Japan. The temblor was reported at 13:44:53 / 1:44 pm (local time epicenter) at a depth of 117.21 km (73 miles). Global time of event 18/02/15 / 2015-02-18 04:44:53 / February 18, 2015 @ 4:44 am UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude 140.2619 East, latitude 31.2945 North, depth 117.21 km, unique identifier, usc000tsn0.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 203 km SSE of Hachijo-jima, Japan.


More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 140.2619° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 31.2945° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 117.21 km Depth of the event in kilometers.
Place 203km SSE 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 2015-02-18 04:44:53 Time when the event occurred. UTC/GMT
Updated 2015-02-25 03:32:26 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 298 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 1.854 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.75 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 106 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 usc000tsn0 Id of event.
Event Code c000tsn0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,usc000tsn0, A comma-separated list of event ids that are associated to an event.

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