(Major) Earthquakes list April 29, 2012 – 2 strong earthquakes along the coast of Honshu, Japan

Last update: April 29, 2012 at 3:43 pm by By

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Another strong coastal earthquake near Miyako, Honshu, Japan
This quake reported as M5.6 by JMA Japan (depth 20 km) had an epicenter a little out of the coast.
Max. JMA intensity 4JMA, below the damaging level.
The Quake was closest to Kuji and Miyako.

Image courtesy JMA Japan - dark orange highest intensity

Strong earthquake along the coast of Honshu, Japan
JMA Japan reports a magnitude of 5.8 at a depth of 50 km
Max. intensity : 5- (just below what Er considers a potential serious damaging level)
5- intensity at Asahi-shi Minami-horinouchi*
Earthquake must have been well felt in Tokyo
12 km S Choshi (pop 75,650)
46 km E Narita (pop 100,641) Narita is one of the Tokyo airports
93 km E Tokyo (pop 8,336,599)
Minor damage cannot be excluded in the 5- intensity area
The earthquake occurred at an intermediate depth what means that the intensity is weakened by the depth of the hypocenter
JMA Japan reports that the epicenter is located 6 km inland in a city called Tonosho.
Of course NO tsunami risk at this magnitude
Update 10:54 UTC : USGS data are pointing the epicenter in a highly populated region of Kanto in Japan. The earthquake happened 7km from Naruto. The nearest populated places are: Oami (19km), Katakai (10km), Togane (11km), Hasunuma (2km), Yokoshiba (5km), Asahi Yokaichiba (20km), Tako (14km), Narita (18km). The closest civilian airport is Tokyo Narita International (20km).

A new batch of moderate to strong aftershocks from the April 11 Mw8.6 earthquake in the Indian Ocean, luckily far away from populated areas.

Label info : M = magnitude, D = depth (km), Time = UTC – Click here for the Time Zone world map.

SRC Location UTC Date/time M D INFORMATION
USGS Kermadec Islands, New Zealand Apr 29 22:35 PM 4.9 48 MAP I Felt It
EMSC Kermadec Islands, New Zealand Apr 29 22:35 PM 4.8 40 MAP I Felt It
EMSC Carlsberg Ridge Apr 29 20:07 PM 4.7 10 MAP I Felt It
EMSC Off East Coast Of Honshu, Japan Apr 29 17:28 PM 4.6 10 MAP I Felt It
EMSC Volcano Islands, Japan Region Apr 29 15:45 PM 4.9 47 MAP I Felt It
USGS Volcano Islands, Japan Region Apr 29 15:45 PM 4.9 41 MAP I Felt It
GEOFON Volcano Islands, Japan Region Apr 29 15:45 PM 4.9 0 MAP I Felt It
EMSC Near East Coast Of Honshu, Japan Apr 29 15:02 PM 5.4 10 MAP I Felt It
USGS Near The East Coast Of Honshu, Japan Apr 29 15:02 PM 5.8 10 MAP I Felt It
GEOFON Near East Coast Of Honshu, Japan Apr 29 15:02 PM 5.3 0 MAP I Felt It
GEOFON South Of Fiji Islands Apr 29 12:46 PM 4.7 0 MAP I Felt It
USGS South Of The Fiji Islands Apr 29 12:46 PM 4.6 212 MAP I Felt It
EMSC South Of Fiji Islands Apr 29 12:46 PM 4.6 220 MAP I Felt It
EMSC Eastern Honshu, Japan Apr 29 12:16 PM 4.6 48 MAP I Felt It
GEOFON Eastern Honshu, Japan Apr 29 12:16 PM 4.8 0 MAP I Felt It
USGS Near The East Coast Of Honshu, Japan Apr 29 12:16 PM 4.6 61 MAP I Felt It
USGS Near The East Coast Of Honshu, Japan Apr 29 10:28 AM 5.8 39 MAP I Felt It
  • Yokosuka - Hotel room was lightly swaying back and forth
  • Yokosuka - Building swaying back and fourth..no damage
  • Tokyo, Ginza - Hotel room on 10th was swaying slightly, and candelier was moving quite much.
  • Tokio - I was sitting in Tokio-Ueno-Park on a park bench when the bench shaked lightly from left to right and the tree beside also moved left and right for nealry 15 seconds.
  • Narita - While at diner in a restaurant the building started to shake. At first it felt like a large heavy truck passed by, the shaking lasted for approx. 15-20 seconds. Drinking glasses trembled lightly on the table. Very light aftershock was felt 5 mins later.
  • Tokyo - Nous avons entendu les cintres trembler dans le placard et le lit qui a bougé. Mon ami qui était dans la douche a ressenti légèrement la secousse.
  • Nippori, Tokyo, Japan - Only enough to shake the lamps and chairs, nothing fell or was disrupted, lasted for about 25 seconds.
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    EMSC Near East Coast Of Honshu, Japan Apr 29 10:28 AM 5.8 40 MAP I Felt It
    GEOFON Near East Coast Of Honshu, Japan Apr 29 10:28 AM 5.8 0 MAP I Felt It
    USGS Off The West Coast Of Northern Sumatra Apr 29 08:09 AM 5.4 23 MAP I Felt It
    EMSC Off W Coast Of Northern Sumatra Apr 29 08:09 AM 5.7 10 MAP I Felt It
    GEOFON Off West Coast Of Northern Sumatra Apr 29 08:09 AM 5.7 0 MAP I Felt It
    EMSC Guerrero, Mexico Apr 29 07:17 AM 4.6 15 MAP I Felt It
    USGS Southeast Of Easter Island Apr 29 06:52 AM 4.8 10 MAP I Felt It
    EMSC Southeast Of Easter Island Apr 29 06:52 AM 4.7 10 MAP I Felt It
    GEOFON Southeast Of Easter Island Apr 29 06:52 AM 5.2 0 MAP I Felt It
    EMSC Off W Coast Of Northern Sumatra Apr 29 03:52 AM 5.0 10 MAP I Felt It
    GEOFON Off West Coast Of Northern Sumatra Apr 29 03:52 AM 5.2 0 MAP I Felt It
    USGS Off The West Coast Of Northern Sumatra Apr 29 03:52 AM 4.7 15 MAP I Felt It
    EMSC Off W Coast Of Northern Sumatra Apr 29 03:00 AM 5.0 40 MAP I Felt It
    GEOFON Off West Coast Of Northern Sumatra Apr 29 03:00 AM 5.1 0 MAP I Felt It
    USGS Off The West Coast Of Northern Sumatra Apr 29 03:00 AM 4.9 15 MAP I Felt It
    EMSC Off W Coast Of Northern Sumatra Apr 29 02:14 AM 4.8 51 MAP I Felt It
    GEOFON North Indian Ocean Apr 29 02:13 AM 5.0 0 MAP I Felt It
    USGS North Indian Ocean Apr 29 02:13 AM 4.6 14 MAP I Felt It
    EMSC Papua, Indonesia Apr 29 01:57 AM 5.2 40 MAP I Felt It
    GEOFON Irian Jaya, Indonesia Apr 29 01:57 AM 5.1 0 MAP I Felt It
    USGS Papua, Indonesia Apr 29 01:57 AM 5.2 15 MAP I Felt It
    EMSC Near Coast Of Ecuador Apr 29 00:43 AM 4.7 115 MAP I Felt It
  • Urdesa, Guayaquil, Ecuador - deep rumble, chandalier started swinging a little
    		•
    USGS Near The Coast Of Ecuador Apr 29 00:43 AM 4.7 115 MAP I Felt It

    Data sources courtesy : USGS – EMSC – GFZ – GEONET

    Earthquakes occurred yesterday (UTC time), but today local time

    M 5.3      2012/04/28 18:00      Depth 31.0 km      KEPULAUAN MENTAWAI REGION, INDONESIA

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    I have felt it – Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo he sentido – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه

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    City/Village where you felt the earthquake
    MMI II (Very weak shaking) ?
    People :
    Felt by persons at rest, on upper floors or favorably placed.
    MMI III (Weak shaking) ?
    People :
    Felt indoors; hanging objects may swing, vibration similar to passing of light trucks, duration may be estimated, may not be recognized as an earthquake.
    MMI IV (Light shaking) ?
    People :
    Generally noticed indoors but not outside. Light sleepers may be awakened. Vibration may be likened to the passing of heavy traffic, or to the jolt of a heavy object falling or striking the building.
    Fittings :
    Doors and windows rattle. Glassware and crockery rattle. Liquids in open vessels may be slightly disturbed. Standing motorcars may rock.
    Structures :
    Walls and frames of buildings, and partitions and suspended ceilings in commercial buildings, may be heard to creak.
    MMI V (Moderate shaking) ?
    People :
    Generally felt outside, and by almost everyone indoors. Most sleepers awakened. A few people alarmed.
    Fittings :
    Small unstable objects are displaced or upset. Some glassware and crockery may be broken. Hanging pictures knock against the wall. Open doors may swing. Cupboard doors secured by magnetic catches may open. Pendulum clocks stop, start, or change rate.
    Structures :
    Some large display windows cracked. A few earthenware toilet fixtures cracked.
    MMI VI (Strong shaking) ?
    People Felt by all. People and animals alarmed. Many run outside. Difficulty experienced in walking steadily.
    Fittings :
    Objects fall from shelves. Pictures fall from walls. Some furniture moved on smooth floors, some unsecured free-standing fireplaces moved. Glassware and crockery broken. Very unstable furniture overturned. Small church and school bells ring. Appliances move on bench or table tops. Filing cabinets or "easy glide" drawers may open (or shut).
    Structures :
    Slight damage to buildings with low standard. Some stucco or cement plaster falls. Large display windows broken. Damage to a few weak domestic chimneys, some may fall.
    Environment :
    Trees and bushes shake, or are heard to rustle. Loose material may be dislodged from sloping ground, e.g. existing slides, talus slopes, shingle slides.
    MMI VII (Very strong shaking) ?
    People
    General alarm. Difficulty experienced in standing. Noticed by motorcar drivers who may stop.
    Fittings :
    Large bells ring. Furniture moves on smooth floors, may move on carpeted floors. Substantial damage to fragile contents of buildings.
    Structures :
    Unreinforced stone and brick walls cracked. Low standard buildings cracked with some minor masonry falls. A few instances of damage to buildings of ordinary workmanship. Unbraced parapets, unbraced brick gables, and architectural ornaments fall. Roofing tiles, especially ridge tiles may be dislodged. Many unreinforced domestic chimneys damaged, often falling from roof-line. Water tanks Type I burst. A few instances of damage to brick veneers and plaster or cement-based linings. Unrestrained water cylinders (hot-water cylinders) may move and leak. Some common windows cracked. Suspended ceilings damaged.
    Environment :
    Water made turbid by stirred up mud. Small slides such as falls of sand and gravel banks, and small rock-falls from steep slopes and cuttings. Instances of settlement of unconsolidated or wet, or weak soils. Some fine cracks appear in sloping ground. A few instances of liquefaction (i.e. small water and sand ejections).
    MMI VIII (Severe shaking) ?
    People Alarm may approach panic. Steering of motorcars greatly affected. Structures : Low standard buildings heavily damaged, some collapse. ordinary workmanship buildings damaged, some with partial collapse. Reinforced masonry or concrete buildings damaged in some cases. A few instances of damage to buildings and bridges designed and built to resist earthquakes. Monuments and pre-1976 elevated tanks and factory stacks twisted or brought down. Some pre-1965 infill masonry panels damaged. A few post-1980 brick veneers damaged. Decayed timber piles of houses damaged. Houses not secured to foundations may move. Most unreinforced domestic chimneys damaged, some below roof-line, many brought down. Environment : Cracks appear on steep slopes and in wet ground. Small to moderate slides in roadside cuttings and unsupported excavations. Small water and sand ejections and localized lateral spreading adjacent to streams, canals, lakes, etc.
    MMI IX (Violent shaking) ?
    Structures Many low standard buildings destroyed. Ordinary workmanship buildings heavily damaged, some collapse. Reinforced masonry or concrete buildings damaged, some with partial collapse. Buildings and bridges designed and built to resist earthquakes damaged in some cases, some with flexible frames seriously damaged. Damage or permanent distortion to some buildings and bridges, designed and built to normal use standards. Houses not secured to foundations shifted off. Brick veneers fall and expose frames. Environment : Cracking of ground conspicuous. Landsliding general on steep slopes. Liquefaction effects intensified and more widespread, with large lateral spreading and flow sliding adjacent to streams, canals, lakes, etc.
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