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rni ...
Joined: 26 Jan 2003 Posts: 109
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Posted: Tue Dec 28, 2004 6:32 amPost subject: Killer Tsunami |
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Dear Prof.ARC and SEFIans, I share the anguish expressed by you about the various ways quantitative information is distorted by Govt. agencies vested with the responsibility of S&T in Earth Sciences. Recently I heard and read statements by some persons on behalf of the Govt. agencies that this was the FIRST TSUNAMi in the historical memory of this country. Public memory may be short. But why scientific agencies and their spokespersons also suffer from this amnesia. Is it because they are just as public as others with no accountability? facts speak for themselves: On 28th November 1945 an earthquake of magnitude 6.7 occurred in the Mekran coast. The epicenter was under the sea at 24.20N, 62.60E. The IMD Report (vol.X,no.125) by G.G. Pendse, published in 1948, gives a brief account of the sea waves generated and the destruction caused along the west coast of the country. Pasni town, an important trading center of those days, 100 Km away from the epicenter was washed off by a wave of height 15 meters. Karachi, now in Pakistan was affected by a wave 1-2 meters high. Bombay nearly 1000 Km away from the epicenter was affected by an unusual tide. The report says there was some loss of life. The wave reached the Bombay at 8.15 AM, nearly two hours after the high tide for the day. Nevertheless, the height of the Tsunami was two meters. If the high tide and the tsunami had occurred together, the loss would have been greater. The farthest port to be affected on the west coast by the tsunami was Karwar, 1600 Km away. I am giving this information, so that the amnesia affecting nodal scientific agencies in this country is recognized by the policy makers, before it is too late for the next earthquake and tsunami. The Earthquake Risk Evaluation Center recently started in IMD, should have at least provided factual information on the past tsunamis that have most certainly affected our ports along the east as well as the west coasts.
Yours faithfully
R. N. Iyengar Professor, Dept. of Civil Engineering Indian Institute of Science Bangalore 560012.
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ajjjay2001 at yahoo.com Guest
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Posted: Wed Dec 29, 2004 4:28 pmPost subject: Killer Tsunami |
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Dear SEFIans,
I think that the lesson to be learnt from this worst disaster is very simple. "The technology ( whether it is remote sensing or seismic analysis ) which can't serve the common man is simply a waste to the society and the development (That we used boast abt) achieved by such a technology is actually "parasitic" in nature"
An other doubt that I'm having is whether our Seismic Researches is caring adequately abt the residents in A&N (Especially when Andaman is said to be a highly seismic area.)
I hope that we ( the technical community ) will rise occasionally to serve the common man against the new(???) challenges of nature...
With Regards, Ajay.
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rni ...
Joined: 26 Jan 2003 Posts: 109
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Posted: Thu Dec 30, 2004 4:06 amPost subject: Killer Tsunami |
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The south Asia analysis group has the following story: NEW DELHI, DECEMBER 29: At 7.50 am on Black Sunday, more than one full hour before the tidal waves hit the Tamil Nadu coast, the top brass of the Indian Air Force knew that the Car Nicobar Air Base had been inundated.
But it was only 41 minutes later�during which time the waves were heading west�that the first communique went out from the Indian Meteorological Department (IMD) to the Government. And the Crisis Management Group, the Government's nodal emergency response unit, met at 1 pm by when the tsunami had come, killed and gone.
And guess who got this first IMD communique? It was sent at 8.54 am to the residence of Murli Manohar Joshi, former Science and Technology Minister rather than his successor Kapil Sibal.
It's always easier to find faults with the benefit of hindsight� especially in an unprecedented disaster like this one�but an investigation of the sequence of events after the quake hit Sumatra at 6.29 am shows a glaring disconnect between different agencies of the Government. And highlights how precious time�that could have been used to issue warnings and maybe save some lives�was lost.
Consider the sequence of events:
� ``At 7.30 am, we were informed by our Chennai unit that coordinates the logistics for the Car Nicobar base about a massive 安达曼和尼科巴附近的地震,“空气首席S Krishnaswamy told The Indian Express today.
``But communication links went down in the Island Territories, the Chennai unit could only raise Car Nicobar base on the high frequency set at 7.50 am ... the last message from Car Nicobar base was that the island is sinking and there is water all over.''
� At 8.15 am, the Air Chief says, he asked his Assistant Chief of Air Staff (Operations) to alert the Defence Ministry.
Now cut to the civilian establishment.
� Unaware of its fax goof-up, the IMD, as per routine, sent another fax to the Disaster Control Room in the Ministry of Home Affairs (MHA) at 9.14 am.
� Eight minutes later, Cabinet Secretary B K Chaturvedi's private secretary was also brought into the loop.
� At 10.30, the director of the Control Room T. Swami informed Cabinet Secretariat officials.
� By then the tsunami had hit the Chennai coastline and another earthquake measuring 7.3 struck 60 miles west of Indira Point at 9.53 am.
What happened between 6.29 am and 8.56 am in the IMD is also telling: it shows how the country's premier met agency works in isolation during an unprecedented emergency.
So even as IMD stations in Chennai, Vishakhapatnam and Kolkata began started receiving after-shock signals within minutes of the main earthquake, and while the rest of the world had already issued the exact epicentre of the earthquake�and the Pacific warning system had sounded a tidal wave alert�the IMD was doing its own calculations to find out the magnitude and epicentre of the earthquake.
Not helping the IMD was the fact that the Andaman station in Port Blair runs on an old, analog system rather than a digital one. In other words, in the event of a large earthquake and frequent after- shocks, what it registered was a ``clipped seismograph'' �a blank sheet of paper instead of zig-zag lines.
This is exactly what happened.
``For computing the exact epicentre, we need data from three stations in three directions. With Andamans out of operations, it took us longer than expected,'' explained the duty officer.
By then, the after-shocks had begun at Andamans. The first one was at 7:19 am of magnitude 5.9 on the richter scale. It is not clear whether that was enough to sound the warning bells.
``Tsunamis are never recorded in Indian history, so it did not occur to us,'' said R S Dattatrayam, director seismology at IMD, who arrived after 8.30 am to the station after being informed. ``I don't recall the exact sequence of events.''
http://www.saag.org/BB/view.asp?msgID=10294
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for_prof_arc at hotmai... Guest
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Posted: Thu Dec 30, 2004 6:40 amPost subject: Killer Tsunami |
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Dear Prof. RNI, Thanks for the information. Please also send the message to Govt. Otherwise, please permit me to send it. With best wishes Sincerely ARC PS: Dear Sefians, Please raise hell on this incompetance of Govt agencies. We owe it to the dead. Sincerely ARC ----- Original Message ----- Message From To: Sent: Thursday, December 30, 2004 9:36 AM Subject: Killer Tsunami
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The south Asia analysis group has the following story: NEW DELHI, DECEMBER 29: At 7.50 am on Black Sunday, more than one full hour before the tidal waves hit the Tamil Nadu coast, the top brass of the Indian Air Force knew that the Car Nicobar Air Base had been inundated.
But it was only 41 minutes later-during which time the waves were heading west-that the first communique went out from the Indian Meteorological Department (IMD) to the Government. And the Crisis Management Group, the Government's nodal emergency response unit, met at 1 pm by when the tsunami had come, killed and gone.
And guess who got this first IMD communique? It was sent at 8.54 am to the residence of Murli Manohar Joshi, former Science and Technology Minister rather than his successor Kapil Sibal.
It's always easier to find faults with the benefit of hindsight- especially in an unprecedented disaster like this one-but an investigation of the sequence of events after the quake hit Sumatra at 6.29 am shows a glaring disconnect between different agencies of the Government. And highlights how precious time-that could have been used to issue warnings and maybe save some lives-was lost.
Consider the sequence of events:
. ``At 7.30 am, we were informed by our Chennai unit that coordinates the logistics for the Car Nicobar base about a massive 安达曼和尼科巴附近的地震,“空气首席S Krishnaswamy told The Indian Express today.
``But communication links went down in the Island Territories, the Chennai unit could only raise Car Nicobar base on the high frequency set at 7.50 am ... the last message from Car Nicobar base was that the island is sinking and there is water all over.''
. At 8.15 am, the Air Chief says, he asked his Assistant Chief of Air Staff (Operations) to alert the Defence Ministry.
Now cut to the civilian establishment.
. Unaware of its fax goof-up, the IMD, as per routine, sent another fax to the Disaster Control Room in the Ministry of Home Affairs (MHA) at 9.14 am.
. Eight minutes later, Cabinet Secretary B K Chaturvedi's private secretary was also brought into the loop.
. At 10.30, the director of the Control Room T. Swami informed Cabinet Secretariat officials.
. By then the tsunami had hit the Chennai coastline and another earthquake measuring 7.3 struck 60 miles west of Indira Point at 9.53 am.
What happened between 6.29 am and 8.56 am in the IMD is also telling: it shows how the country's premier met agency works in isolation during an unprecedented emergency.
So even as IMD stations in Chennai, Vishakhapatnam and Kolkata began started receiving after-shock signals within minutes of the main earthquake, and while the rest of the world had already issued the exact epicentre of the earthquake-and the Pacific warning system had sounded a tidal wave alert-the IMD was doing its own calculations to find out the magnitude and epicentre of the earthquake.
Not helping the IMD was the fact that the Andaman station in Port Blair runs on an old, analog system rather than a digital one. In other words, in the event of a large earthquake and frequent after- shocks, what it registered was a ``clipped seismograph'' -a blank sheet of paper instead of zig-zag lines.
This is exactly what happened.
``For computing the exact epicentre, we need data from three stations in three directions. With Andamans out of operations, it took us longer than expected,'' explained the duty officer.
By then, the after-shocks had begun at Andamans. The first one was at 7:19 am of magnitude 5.9 on the richter scale. It is not clear whether that was enough to sound the warning bells.
``Tsunamis are never recorded in Indian history, so it did not occur to us,'' said R S Dattatrayam, director seismology at IMD, who arrived after 8.30 am to the station after being informed. ``I don't recall the exact sequence of events.''
http://www.saag.org/BB/view.asp?msgID=10294 |
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Rudra Nevatia ...
Joined: 26 Jan 2003 Posts: 214
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Posted: Thu Dec 30, 2004 9:59 amPost subject: Killer Tsunami |
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I would urge all to visithttp://www.asc-india.org/
This site is maintained by Stacey Martin, a student (!!!) based in Pune and gives continuous updates.
Even as I was looking at the site I noticed that a fresh EQ is recorded in Car Nicobar and the Sumatra quake intensity has been revised to M9.0
By the way asc stands for Amateur Seismic Centre. Some 业余的! !
Rudra Nevatia
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hari.kumar at undp.org Guest
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Posted: Thu Dec 30, 2004 2:08 pmPost subject: Killer Tsunami |
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Thank you Sir for acknowledging this rare talent.(I consider Stacey a Tendulkar of sorts!) Many experts use material from his site in their presentations-but swear that they have never heard of him.. 下面是邮件从自我explanat斯泰西ory. Best, Hari
Dear all,
The earthquake and ensuing tsunamis are a tragedy we are dealing with at present but we must all remember that we also require to learn many things from this disaster. One of those is to learn how we can use this earthquake's shaking effects to establish simulations that will help us understand how the Indian landmass will shake in future earthquakes as well as to better understand past earthquakes which occurred before modern instruments were developed. I'd therefore request you to take a few moments to view this following link and to report in if you felt the earthquake's shaking or if you experienced odd oscillations in enclosed water bodies in your surroundings. Some of you from the BBSR office have already responded and it would be of great scientific value if more of you could send in your responses from other parts of the country.
http://asc-india.org/FEQM/20041226.htm
Yours sincerely, Stacey -------------------------------------- Stacey S. Martin, Earthquake Hazards Researcher Urban Earthquake Vulnerability Reduction Govt. of India - UNDP DRM Programme Pune 411 001, India E-mail:stacey.martin@undp.org E-mail:stacey.martin@asc-india.org
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dhirendrat General Sponsor
Joined: 02 Apr 2008 Posts: 24
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Posted: Thu Dec 30, 2004 2:19 pmPost subject: Killer Tsunami |
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The impact of the eartquake of 26 Dec. 2004 was felt even in Ahmedabad. Persons felt the vibrations and ceiling fans were shaking. There is still a heightened sensitivity in public at large to such phenomenon post the earthquake of January 2001.
- Dhirendra Tripathi Ahmedabad
hari.kumar@undp.org wrote:
[quote]Thank you Sir for acknowledging this rare talent.(I consider Stacey a Tendulkar of sorts!) Many experts use material from his site in their presentations-but swear that they have never heard of him.. 下面是邮件从自我explanat斯泰西ory. Best, Hari
Dear all,
The earthquake and ensuing tsunamis are a tragedy we are dealing with at present but we must all remember that we also require to learn many things from this disaster. One of those is to learn how we can use this earthquake's shaking effects to establish simulations that will help us understand how the Indian landmass will shake in future earthquakes as well as to better understand past earthquakes which occurred before modern instruments were developed. I'd therefore request you to take a few moments to view this following link and to report in if you felt the earthquake's shaking or if you experienced odd oscillations in enclosed water bodies in your surroundings. Some of you from the BBSR office have already responded and it would be of great scientific value if more of you could send in your responses from other parts of the country.
http://asc-india.org/FEQM/20041226.htm
Yours sincerely, Stacey -------------------------------------- Stacey S. Martin, Earthquake Hazards Researcher Urban Earthquake Vulnerability Reduction Govt. of India - UNDP DRM Programme Pune 411 001, India E-mail:stacey.martin@undp.org E-mail:stacey.martin@asc-india.org
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skjain.iitk General Sponsor
Joined: 26 Jan 2003 Posts: 104
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Posted: Thu Dec 30, 2004 7:32 pmPost subject: Killer Tsunami |
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I agree with Hari. I had a chance to go to this site a few months back, and I must say, I was amazed at the quality of work he has done. Beautiful.
My only suggestion to him is with respect to name of the site. ASC also stands for Asian Seismological Commission! When a student told me of the site of ASC, I thought it belongs to Asian....until I went to the site myself.
SudhirK Jain
hari.kumar@undp.org wrote:
[quote]Thank you Sir for acknowledging this rare talent.(I consider Stacey a Tendulkar of sorts!) Many experts use material from his site in their presentations-but swear that they have never heard of him.. 下面是邮件从自我explanat斯泰西ory. Best, Hari
Dear all,
The earthquake and ensuing tsunamis are a tragedy we are dealing with at present but we must all remember that we also require to learn many things from this disaster. One of those is to learn how we can use this earthquake's shaking effects to establish simulations that will help us understand how the Indian landmass will shake in future earthquakes as well as to better understand past earthquakes which occurred before modern instruments were developed. I'd therefore request you to take a few moments to view this following link and to report in if you felt the earthquake's shaking or if you experienced odd oscillations in enclosed water bodies in your surroundings. Some of you from the BBSR office have already responded and it would be of great scientific value if more of you could send in your responses from other parts of the country.
http://asc-india.org/FEQM/20041226.htm
Yours sincerely, Stacey -------------------------------------- Stacey S. Martin, Earthquake Hazards Researcher Urban Earthquake Vulnerability Reduction Govt. of India - UNDP DRM Programme Pune 411 001, India E-mail:stacey.martin@undp.org E-mail:stacey.martin@asc-india.org
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sudhirbadami Silver Sponsor
Joined: 26 Jan 2003 Posts: 26 Location: Mumbai
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Posted: Fri Dec 31, 2004 9:09 amPost subject: Killer Tsunami |
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While there is much information of damages and losses due to Tsunami, I do not see refernce to damages due to earthquake. As Dhirendra Tripathi says it, they felt the quake at Ahmedabad. Why only Ahmedabad, my sister rang me up on 26th morning at about 6: 40 AM asking me if I had felt quake vibrations. She is at 7the floor at Prabhadevi, Mumbai. I also came to know that a friend on 5th floor at Shivaji Park, nearby to Prabhadevi also felt vibrations. I, on the ground floor felt nothing as I was perhaps busy making coffee and perhaps walking at the time from Kitchen to Dinning room.
Now, if such quake was sufficient for my sister to call me to verify from 'seismic expert brother', what were the people officially monitoring earthquake doing all over India? Were the airfoece taken napping when the IAF base got whashed away? And the army? Surely it was not the case of all instruments and communications setup getting malfunctioning simultaneously? To avoid a panic did the government think of going slow and keeping fingures crossed hoping nothing will be 发生了!可能不是人“宁可the side of caution" the first time?
It looks like like Stacy Martin, we at SEFI will have to setup a warning system that would communicate with every SEFIan through email and sms of any earthquake above 4 on the Richter, giving location and time. Whoever is in the neighborhood could personally alert authorities to take action..... Just a thought to take it further and quickly. In this team of 'SEFIan' volunteers we could have some other people too so as to cover the entire country.
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