Tuesday, January 18, 2011

Massive Earthquake strikes South Western Pakistan. Tremors felt in India

THE INTENSITY REPORTS FROM DIFFERENT AREAS IN ASIA
THE GRAPH SHOWING DECREASE IN INTENSITY WITH RESPECT TO DISTANCE


THE USGC SHAKE MAP SHOWING MAX.EFFECT NEAR THE EPICENTER

A 7.2 magnitude earthquake on richter scale was recorded in the South Western Periphery of Pakistan close to Afghanisthan border area with the epicenter at isolated region at 28.8382N,63.9473E ( of the order of following distances below)

DISTANCE FROM EPICENTER-

45 km (30 miles) W of Dalbandin, Pakistan
260 km (160 miles) W of Kalat, Pakistan
310 km (190 miles) ESE of Zahedan, Iran
1035 km (640 miles) WSW of ISLAMABAD, Pakistan
1290km from New Delhi
1077km from Ahmedabad
1242km from Dharamshala,Himachal Pradesh

TIMINGS OF EARTHQUAKE
Earthquake was reported at 20:23:26UTC ( 18th Jan 2011) i.e 01:23:26AM LT(19th Jan 2011) at epicenter


THE DEPTH OF THE EARTHQUAKE WAS AROUND 84KM.
( DEPTH OF EARTHQUAKE IS THE AREA WHERE EARTHQUAKE BEGINS TO RUPTURE.
THIS HEIGHT IS RECORDED BELOW SEA LEVEL OR BELOW THE SEISMOLOGY OBSERVATORY)

Tremors of the earthquake were felt at multiple places stretching from Riyadh city,Dubai city,Tehran,Samarkand( Uzbekistan),Kabul,Gwalior( India) and as south as Bangalore( India).
The USGC received responses from -

Dharmashala - Where the Intensity was reported V ( FIVE) ( Moderate Shaking and Light damage expected)

In Pilani, INTENSITY V ( 5) was reported which means Moderate Shaking and minor damage.

Delhi, Gwalior,Noida - Intensity IV( 4) where minor shaking with no damage was recorded

Chandigarh,Jaipur,Jodhpur,Jaisalmer,Mumbai and Bangalore- Intensity- III ( Weak Shaking of the ground and no damage)

The Earthquake's maximum effect ( Intensity ) was reported at
Naushahro Firoz ( In Sindh region),Pakistan and Rudbar in Afghanisthan ( Where INTENSITY WAS VI,6)

In rest areas of the list, Intensty of III,II and I was reported

DAMAGE REPORTS
1} Several Houses were collapsed and damaged in Quetta
** No death reports till yet
2] One person has died due to wall collapse in Pakistan
More damage reports shall be coming as Earthquake must have created extensive damage in Pakistan
3] No casualties reported in India


MERCALLI INTENSITY SCALE ( GIVEN BELOW)
COMPARE THE VALUES REPORTED AT PLACES WITH THE DEFINED DAMAGE GIVEN BELOW


I. InstrumentalNot felt by many people unless in favourable conditions.
II. WeakFelt only by a few people at best, especially on the upper floors of buildings.
Delicately suspended objects may swing.
III. SlightFelt quite noticeably by people indoors, especially on the upper floors of
buildings. Many do not recognize it as an earthquake. Standing motor
cars may rock slightly. Vibration similar to the passing of a truck.
Duration estimated.
IV. ModerateFelt indoors by many people, outdoors by few people during the day. At night,
some awakened. Dishes, windows, doors disturbed; walls make cracking
sound. Sensation like heavy truck striking building. Standing motor cars
rock noticeably. Dishes and windows rattle alarmingly.
V. Rather StrongFelt outside by most, may not be felt by some outside in non-favourable
conditions. Dishes and windows may break and large bells will ring.
Vibrations like large train passing close to house.
VI. StrongFelt by all; many frightened and run outdoors, walk unsteadily. Windows,
dishes, glassware broken; books fall off shelves; some heavy furniture
moved or overturned; a few instances of fallen plaster.
Damage slight.
VII. Very StrongDifficult to stand; furniture broken; damage negligible in building of good
design and construction; slight to moderate in well-built ordinary structures;
considerable damage in poorly built or badly designed structures; some
chimneys broken. Noticed by people driving motor cars.
VIII. DestructiveDamage slight in specially designed structures; considerable in ordinary
substantial buildings with partial collapse. Damage great in poorly built
structures. Fall of chimneys, factory stacks, columns, monuments, walls
Heavy furniture moved.
IX. ViolentGeneral panic; damage considerable in specially designed structures,
well designed frame structures thrown out of plumb. Damage great in
substantial buildings, with partial collapse. Buildings shifted off foundations.
X. IntenseSome well built wooden structures destroyed; most masonry and frame
structures destroyed with foundation. Rails bent.
XI. ExtremeFew, if any masonry structures remain standing. Bridges destroyed.
Rails bent greatly.
XII. CataclysmicTotal destruction - Everything is destroyed. Lines of sight and level distorted.
Objects thrown into the air. The ground moves in waves or ripples.
Large amounts of rock move position. Landscape altered, or leveled by
several meters. In some cases, even the routes of rivers are changed.

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