(Major) Earthquakes list July 26, 2012 – Very strong earthquake in the Indian Ocean (greater Mauritius area)

Last update: July 27, 2012 at 8:48 am by By

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Strong earthquake close to Tonga
The earthquake measured M5.6, but due to its epicenter in the ocean, the weakening effect has resulted in a maximum light shaking for 96000 people. Nothing exceptional in this area of the world where earthquakes are a weekly phenomena.

Indian Ocean earthquake - Epicenter and Ridge faulting zone

Very strong earthquake in the Indian Ocean (greater Mauritius area)
A very powerful earthquake struck the ocean bed at approx. 400 km from Ile Rodrigues, both belonging to Mauritius and approx. 1000 km from the main Island of Mauritius and Reunion.
The earthquake is triggered by an irregular ridge zone (spreading plates) (Marie Celeste Fracture Zone), a typical ocean earthquake scenario. Fresh magma comes up in these ridges and pushes both plates (both sides of the ridge) in opposite directions. The movement of these plates is generating earthquakes and even powerful earthquakes as the moving plates sometimes are hanging due to the irregular shape.
The Magnitude was not strong enough to generate a tsunami.  Because of the distance it must have surely been felt in Port Mathurin, the main city on Ile Rodrigues.

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SRC Location UTC Date/time M D INFORMATION
USGS New Britain Region, Papua New Guinea Jul 26 23:58 PM 4.9 172 MAP I Felt It
EMSC New Britain Region, P.n.g. Jul 26 23:58 PM 4.9 176 MAP I Felt It
GEOFON New Britain Region, P.n.g. Jul 26 23:58 PM 4.9 166 MAP I Felt It
EMSC Halmahera, Indonesia Jul 26 13:31 PM 4.7 242 MAP I Felt It
GEOFON Halmahera, Indonesia Jul 26 13:31 PM 4.8 230 MAP I Felt It
EMSC Loyalty Islands Jul 26 10:48 AM 5.2 37 MAP I Felt It
USGS Southeast Of The Loyalty Islands Jul 26 10:48 AM 5.2 37 MAP I Felt It
GEOFON Southeast Of Loyalty Islands Jul 26 10:48 AM 5.6 41 MAP I Felt It
EMSC Tonga Jul 26 10:20 AM 5.4 10 MAP I Felt It
USGS Tonga Jul 26 10:20 AM 5.6 9 MAP I Felt It
GEOFON Tonga Islands Jul 26 10:20 AM 5.6 10 MAP I Felt It
GEOFON Northeast Of Taiwan Jul 26 08:33 AM 4.7 122 MAP I Felt It
EMSC Northeast Of Taiwan Jul 26 08:33 AM 4.6 119 MAP I Felt It
USGS Northeast Of Taiwan Jul 26 08:33 AM 4.7 120 MAP I Felt It
GEOFON North Island, New Zealand Jul 26 06:57 AM 5.1 17 MAP I Felt It
EMSC North Island Of New Zealand Jul 26 06:57 AM 5.0 26 MAP I Felt It
USGS North Island Of New Zealand Jul 26 06:57 AM 4.9 32 MAP I Felt It
GEONET Wairarapa Jul 26 06:57 AM 5.2 30 MAP I Felt It
GEOFON South Of Fiji Islands Jul 26 06:12 AM 5.2 346 MAP I Felt It
EMSC South Of Fiji Islands Jul 26 06:12 AM 5.3 352 MAP I Felt It
USGS South Of The Fiji Islands Jul 26 06:12 AM 5.2 329 MAP I Felt It
EMSC Mauritius - Reunion Region Jul 26 05:33 AM 5.8 2 MAP I Felt It
GEOFON Mauritius/reunion Region Jul 26 05:33 AM 6.6 10 MAP I Felt It
USGS Mauritius - Reunion Region Jul 26 05:33 AM 6.7 9 MAP I Felt It
  • Mysore - Somewhere around mid night - 26th July 2012 i felt that my entire room was shaking for sometime.
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    GEOFON Kermadec Islands Region Jul 26 02:39 AM 5.1 100 MAP I Felt It
    USGS Kermadec Islands Region Jul 26 02:38 AM 4.9 34 MAP I Felt It
    EMSC Kermadec Islands Region Jul 26 02:38 AM 5.1 80 MAP I Felt It
    EMSC Tajikistan Jul 26 01:06 AM 5.3 133 MAP I Felt It
    GEOFON Tajikistan-xinjiang Border Region Jul 26 01:06 AM 5.3 127 MAP I Felt It
    USGS Tajikistan Jul 26 01:06 AM 5.3 116 MAP I Felt It

    Data sources courtesy : USGS – EMSC – GFZ – GEONET

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

    Solomon Islands Jul 25 21:43 PM M 5.1 Depth 18.9 km

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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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