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Four earthquakes strike UAE
by Dylan Bowman on Sunday, 03 February 2008
Four moderate earthquakes hit the UAE early on Sunday, just a day after a tremor measuring 3.4 on the Richter scale struck Deba Al Fujairah on the east coast.
The latest earthquakes were felt by residents up and down the east coast, but there have been no reports of injuries or damage to property.
The National Centre for Meteorology and Seismology (NCMS) said the first earthquake had a magnitude of 4.4 of the Richter scale and hit at 01.25.03 local time, with the quake's epicentre in the Gulf of Oman about 140 kilometres east of the city of Al Ain.
The second earthquake had a magnitude of 3.2 and hit at 01.25.15 and was centred north of the city of Fujairah, the NCMS said in a statement on its website.
The third, measuring 2.57, occurred at 03.34.24 and was also centred north of Fujairah, while the fourth measured 3.2 and took place at 08.30.00 with the epicentre around Qeshm Island in the Strait of Hormuz.
The NCMS said the first three earthquakes were recorded in local seismic observatories and not in any of the regional observatories.
The centre said this was because the seismic depth of the point on the fault plane where the rupture started was very close to the surface, which resulted in a strong sense of the seismic waves in a limited area and a rapid decrease the level of the seismic waves as they moved away from the centre.
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USER COMMENTS (1 COMMENTS)
Posted by S.PRAKASH, TIRUCHI, TAMILNADU-620101.INDIA. on 15 February 2008 at 14:35 UAE time
Dear sir,
It is certainly possible to predict when and where the next quake will hit at least in region wise with in 15 to 30 days based on inclement weather changes in a particular region. I am ready to discuss these topics with any group of experts. I collected and correlated the data for the past two years after more than two decade of close and careful constant monitoring.
Volcanism and seismic activity are often closely related, responding to the same dynamic Earth forces. The geological process within the earth -Volcanoes and quakes responsible for the sea surface warming and the atrocious weather changes and significantly there is no connection between the Co2 and the Global warming or Climatic change. This is the reason why both quakes and weather phenomena are continuous and uncertain.
During an earthquake, two blocks of the Earth’s crust slide past one another generating massive amounts of frictional heat. In fact, Kanamori & Brodsky (2001) describe earthquakes as thermal events more than seismic events because most of the energy release during an earthquake goes into heat rather than seismic waves. The frictional heat energy generated during the creep motion of the huge plates within the earth dissipated in the form of Sea surface warming.
The processes of a volcano / quake under the Ocean bed have the effect not only in Antarctica but also on the atmospheric anomalies world wide. Heavy snow, severe storm, cyclone, tornado, flood, land slide, Sea withdrawal, and tsunami, at different places at different times all are the by product of quakes/ volcanoes. Happenings of quakes under the Ocean displacing the water mass in two ways, one by means of formation of low depression over the Ocean during the process of quake and another by means of tsunami at the Ocean bed at the time of final fracture.
For a tropical cyclone, according to the existing theory, the solar heating being the initial source for evaporation. This may not be true due to the following reasons. The worldwide, tropical cyclone activity peaks in late summer that is in the aphelion position of the earth. If the solar energy as the heating source of the Ocean, actually the tropical cyclones should be peak in the perihelion poison but it is contradictorily peak in the aphelion position of the earth. On a world wide scale, May is the least active month, while September is the most active month. The amount of heat energy that reaches on to the surface of the earth not in uniform due to the position of the earth around the sun.
Scientists at the National Center for Atmospheric Research estimate that a tropical cyclone releases heat energy at the rate of 50 to 200 trillion joules per day or to exploding a 10-megaton nuclear bomb every 20 minutes. Even it was calculated that the Volcano eruption of Mt. Saint Helens in US in 1980 released an estimated 1.7 x 10^18 Joules of energy over a nine hour period. This is equivalent to detonating 27,000 Hiroshima-size nuclear bombs at the rate of one detonation per second over a 7.5 hour period. The temperature of the ejecta at the mouth must be of the order of 900 degree Celsius and by the time it reaches the sea it cools down to 500 – 600 degree Celsius. (As per USGS, the tremendous amount of energy released of Dec.2004, M9 earthquake rupture was equivalent to 23,000 Hiroshima Bombs or 20x10^17 joules).But what is the amount of energy released during the process of an earthquake (not at the time of break) before the final break? This so far unobserved energy is responsible for Sea surface warming. The Frictional heat produced by the geological process within the earth that responsible for the Sea surface warming so as to maintain 26.5 degree Celsius up to 50 meter depth of the Ocean.
For a cyclone formation, in most situations, water temperatures of at least 26.5 degree C (80 degree F) are needed down to a depth of at least 50m (150 feet).Only with the up-ward direction of convection (Surface cold water replaced by the bottom warm water) it is possible to maintain the water temperature up to the depth of 50 meters or even more. This is again only possible when the enormous amount of heat generating system at the Ocean bed. (As said earlier during an earthquake, two blocks of the Earth’s crust slide past one another generating massive amounts of frictional heat).The peripheral areas of the Pacific Ocean Basin, containing the boundaries of several plates, are not only for many active volcanoes and quakes but also birth place for many tropical storms. Then these tropical storms move up to thousands of kilometers away from its origin and affect the land masses, by means heavy rain, flood and land slide etc.
For instance, the geologic processes within the earth of - Indonesian land masses affects Sri Lankan, Indonesian, Pakistan, Bangladesh and Indian weather; Maluku (Indonesia )islands land masses affects Malaysian weather, Japan, Marianas and Guam land masses affects Japan, Philippine & Taiwan weather; Philippine land masses affects Thailand and Vietnam land masses; PNG, Vanuatu, Fiji, Tonga, New Zealand and Solomon Islands land masses affects Australian weather; Turkey land mass affects Bulgarian weather; Peru and Chile land masses affect Mexico weather; the Queen Charlotte Islands, B.C. affects the US states of Washington and Oregon weather; East of Congo republican land masses affects the Zambia & Zimbabwe weather; Tanzania land masses affects the Kenyan weather ;Northern Chile & Southern Peru land masses affects Bolivian Weather ; Baja California and Mexico land masses affects the weather of several states across the US west. Central American countries land masses collectively affects the US weather and so on.
Then with the down-ward direction of convection with the solar heating being the initial source over the Ocean surface for evaporation, the top of the water surface cannot maintain the water temperatures of at least 26.5 degree C (80 degree F) are needed down to a depth of at least 50m (150 feet). Since the surface warm water replaced by the bottom cold water.
When the solar energy enough to heated the Ocean to 26.5 degree Celsius up to the depth of 50 meters, how the same solar energy not enough to heat the major rivers and lakes to that minimum level? But even when these conditions are satisfactorily meet, why no cyclones formed over the major rivers like Nile, Amazon or Mississippi-Missouri and over the lakes like Baikal (depth 1620m), Tanganyika (1463) or the Caspian Sea (1025m)?
Yours truly,
S.PRAKASH, M.Sc., (Phy)
ASNT NDT Level III (MT, PT, RT, UT, VT)
Super Quality Services (an NDT organization)
Tiruchi – 620 001, Tamil Nadu, INDIA.
Res:
149, VELLALAR STREET
MUTHARASANALLUR
TIRUCHI, TAMILNADU-620101.INDIA.
PH: 0091-431-2685243; 0091-94439-22723.
e-mail:apaprakash@yahoo.co.in
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