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(Major) Earthquakes list October 4, 2012 – Moderate earthquake in the Philippines

Thursday, October 4, 2012 15:52

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Moderate earthquake in the Philippines
Epicenter 41 km from Mamburao (Occidental Mindoro). Hypocenter (depth) at 15 km following Phivolcs, Magnitude : M5.3. Once again a totally different earthquake data set than other seismological agencies in the world. We do trust Phivolcs as the most specialized and accurate agency for earthquakes in the Philippines. USGS : M5.0@58 km; EMSC : M4.8@80 km; GEOFON : M5.2@38 km.
This is another example of how difficult it can be to compute earthquake data. In general we can say that the agency with the most instruments installed at close distance from the epicenter will be the most accurate, in this case : Phivolcs. Earthquake-report.com is not happy at all when local press is only displaying USGS values. They should at least always indicate the local agencies values.
Epicenter 172 km from Manila. The epicenter of this (subduction fault) earthquake was luckily in the sea which has weakened the shaking intensity.
Magnitude was not strong enough to pose a tsunami risk.
Shaking intensities as reported by Phivolcs 3th bulletin :
Intensity IV – Batangas City, Pinamalayan, Oriental Mindoro; San Jose, Occidental Mindoro
Intensity III – Pasay City
Intensity II – Quezon City, Malabon City
Intensity I – Tagaytay City

Label info : M = magnitude, D = depth (km), Time = UTC - Click here for the Time Zone world map.
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SRC	Location	UTC Date/time	M	D	INFORMATION
EMSC	Mindanao, Philippines	Oct 04 17:03 PM	4.8	80.0	MAP	I Felt It
GEOFON	Mindanao, Philippines	Oct 04 17:03 PM	5.0	78.0	MAP	I Felt It
EMSC	Guam Region	Oct 04 15:37 PM	4.8	156.0	MAP	I Felt It
USGS	Guam Region	Oct 04 15:37 PM	4.8	156.1	MAP	I Felt It
EMSC	Philippine Islands Region	Oct 04 14:55 PM	4.6	17.0	MAP	I Felt It
GEOFON	Philippine Islands Region	Oct 04 14:55 PM	4.6	17.0	MAP	I Felt It
EMSC	Philippine Islands Region	Oct 04 14:45 PM	4.9	130.0	MAP	I Felt It
GEOFON	Philippine Islands Region	Oct 04 14:45 PM	4.9	38.0	MAP	I Felt It
USGS	Mindanao, Philippines	Oct 04 14:45 PM	4.9	19.5	MAP	I Felt It
ER	I Felt A (not Listed) Earthquake	Oct 04 12:00 PM	4.6	0.1	MAP	I Felt It
Kampala, Uganda - Very weak shaking Kampala, Uganda - The animals would be the first ones to feel it. Soorry, no shakings here. ER : Thank you for telling us.
EMSC	Flores Region, Indonesia	Oct 04 06:38 AM	4.8	15.0	MAP	I Felt It
GEOFON	Flores Region, Indonesia	Oct 04 06:38 AM	4.8	10.0	MAP	I Felt It
USGS	Flores Region, Indonesia	Oct 04 06:38 AM	4.8	15.3	MAP	I Felt It
GEOFON	Jujuy Province, Argentina	Oct 04 06:11 AM	4.8	166.0	MAP	I Felt It
USGS	Salta, Argentina	Oct 04 06:11 AM	4.8	173.0	MAP	I Felt It
EMSC	Salta, Argentina	Oct 04 06:11 AM	4.8	173.0	MAP	I Felt It
USGS	Vanuatu	Oct 04 04:04 AM	4.8	95.5	MAP	I Felt It
EMSC	Vanuatu	Oct 04 04:04 AM	4.9	92.0	MAP	I Felt It
GEOFON	Vanuatu Islands	Oct 04 04:04 AM	4.9	92.0	MAP	I Felt It
GEOFON	South Of Java, Indonesia	Oct 04 03:51 AM	5.0	10.0	MAP	I Felt It
EMSC	South Of Java, Indonesia	Oct 04 03:51 AM	4.7	40.0	MAP	I Felt It
USGS	South Of Java, Indonesia	Oct 04 03:51 AM	4.7	8.2	MAP	I Felt It
EMSC	Mindoro, Philippines	Oct 04 01:55 AM	5.2	60.0	MAP	I Felt It
Manila, Phillipines - We are indside our office, when I was the water inside the dispenser moving and the curtains near my desk is also moving.My office mates also felt it
GEOFON	Mindoro, Philippines	Oct 04 01:55 AM	5.2	38.0	MAP	I Felt It
USGS	Mindoro, Philippines	Oct 04 01:55 AM	5.0	58.5	MAP	I Felt It

Data sources courtesy : USGS – EMSC – GFZ – GEONET

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

South Of Java, Indonesia

Oct 03 22:37 PM

M 4.6

Depth 10.0 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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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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2012-10-04 15:44:02

Source: http://earthquake-report.com/2012/10/04/major-earthquakes-list-october-4-2012/

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