Earth cracks in UP seismic related: Expert

Motion of a massive granitic body under the earth could be the probable reason behind alarming cracks on the earth crust that have created a panic like situation in northern Indian state of Uttar Pradesh (UP).
“If this granitic craton motion is changed due to some tectonic reason, one may see subsidence at large scale—since a fault is present along Kanpur-Lucknow—there could be danger of large surface deformation,” cautioned an US based Indian scientist Ramesh Singh.
The effect of motion of this block will be reflected in widespread cracks, he said. Singh is a Professor at George Mason University in Washington and vice chair of GeoRisk Commission of the International Union of Geodesy and Geophysics.
He further said that the Government of India should monitor seismic activities in the area to avert any major disaster due to this motion.
Singh, who had extensively studied the seismology in this part of UP during his stint at IIT Kanpur as a Professor said if the orientation of such long cracks was in the east-west direction, then the cracks could be due to stress on the surface of the earth due to motion of this massive craton (granitic body) exposed near Jhansi.
He said this massive body underlying the region is inclined towards northeast with depth reaching 300-500 metres near Kanpur and 1,200 metres in Lucknow.
About 18 months back, scientists observed a shift in the position of the Sangam—the confluence of rivers Ganges and Yamuna and mythical Saraswati near Allahabad—and thought it was due to the sediment load in the rivers or due to plate motion, Singh said.
“Now, the appearance of large widespread cracks is clear evidence of neo-tectonic activities associated with the building of stress in this region and we must monitor seismic activities along Kanpur-Lucknow and Moradabad faultlines,” the Professor said.
Singh said he initially suspected that the cracks might be due to subsidence as a result of excessive groundwater withdrawal but ruled it “since the cracks were seen on a regional scale in many parts of Kanpur, Hamirpur, and Allahabad.”
The formation of cracks on the earth continues to affect various districts of UP and two villages near Lucknow are the latest to witness long fissures on the surface.
Fields in Kakori block’s two villages, Dullu Khera and Vader Khera, about 10 km from Lucknow, have developed wide cracks up to 250 metres long, officials said.
Besides the villages in Lucknow district, six districts of Uttar Pradesh have been witnessing this phenomenon for about a week.

Source: http://www.igovernment.in/site/earth-cracks-in-up-seismic-related-expert/

Learning from failures in disaster response

The Myanmar cyclone and Chinese earthquake highlight the need for effective dissemination of information, both before and after a disaster.The effectiveness with which a country deals with a major accident or disaster is a revealing indicator of its sensitivity to the needs of its population. It depends heavily on the country's ability to respond to the population's need for information, prior to and following the event.In the mid-1980s, a key factor in the collapse of the communist regime in the Soviet Union was public resentment of the mishandling of information about the near meltdown at the Chernobyl nuclear plant. It took authorities more than 24 hours to publicly acknowledge the accident, and the lack of evacuation strategies added to losses from the disaster.The recent impact of cyclone Nargis in Myanmar (formerly Burma) and the earthquake in Sichuan province, China, has posed major challenges to both countries in dealing with the event, and handling information about prevention and mitigation.Each has raised important questions about the failure to integrate scientific knowledge into disaster planning, at the cost of thousands of lives. And each has highlighted the need for accurate communication of information, if the impact of major disasters is to be minimised and if government officials are to be held accountable for their efforts — or lack thereof.Clearest lessonIn the case of Myanmar, the failures are glaringly obvious.Firstly, there has been the failure to take on board increasingly widespread knowledge about how the destruction of mangrove forests dramatically increases the vulnerability of coastal populations.This was one of the clearest lessons of the December 2004 Indian Ocean tsunami and has been acknowledged in other countries, including Bangladesh. But Myanmar authorities seem to have paid little attention to mangrove conservation. UN Food and Agriculture Organization officials say the Irrawaddy delta — the country's largest mangrove area, where Nargis struck — has lost half its mangrove area since 1975 (see UN: Mangrove loss 'intensified' Myanmar cyclone damage).Secondly, it is clear that the country lacks the comprehensive communication infrastructure — and perhaps even the political will — to ensure that information about impending disasters reaches the areas where it is most needed.Warnings about the imminent cyclone were posted by the country's meteorological office. But there was no way of rapidly communicating these warnings to those most in danger. Furthermore, the lack of protection measures meant that even those aware could do little about it.Widespread praiseIn China, the situation has been different. The government has won widespread praise for the speed with which it has acknowledged the size of the disaster and submitted its rescue efforts to international scrutiny — in stark contrast to the Tangshan earthquakes of 1976.This new attitude has been reflected in the willingness of earthquake specialists to open themselves up to queries from local journalists. In the past, they would have insisted that all such questions be directed to government officials. Through a fortunate accident of timing, a new law on public access to information came into effect on 1 May, requiring them to act differently. But even in China, important questions have been raised.For example, there is no guarantee that the scientists who have made themselves accessible in an emergency situation will maintain this attitude in less urgent times. In addition to their willingness to deal with the media, scientific institutions must be trained to release information in a fast and comprehensible way.At the same time, media reporting on baseless rumours of new earthquake shocks has reinforced the need to train science journalists to make their own judgments about when to trust apparently scientific statements.Equally important is the need for some probing journalism into why so many schools collapsed, particularly when buildings around them often remained standing. In many cases, the problems appear to have been caused not by a lack of scientific or technical information, but by a failure to put information to use.Intense pressureIncreased openness is not without cost. The more the Soviet government unveiled information about the Chernobyl disaster, the greater became the criticism of its failure to protect its citizens.Undoubtedly, this fear lies at the heart of the situation in Myanmar. The sight on state-run television of the country's prime minister visiting a few hastily erected camps for survivors — all looking remarkably well-fed — is far less likely to generate internal criticism than film of bloated bodies and starving children almost three weeks after the cyclone.In the long-term, attempts to impose heavy-handed restrictions on the coverage of disasters, particularly in an era of global electronic communication, will inevitably be counterproductive. As they learn more about the reality of the situation, the less confidence they will have in those who tell them that the situation is different.Providing citizens with the information they need to protect themselves against future cyclones or earthquakes is a crucial role for science communicators. Identifying the political or other obstacles that prevent this information from getting through or being put into practice is potentially even more important.

Source: http://www.scidev.net/en/editorials/learning-from-failures-in-disaster-response.html

Active Submarine Volcanoes Found Near Fiji

ScienceDaily (June 20, 2008) — Several huge active submarine volcanoes, spreading ridges and rift zones have been discovered northeast of Fiji by a team of Australian and American scientists aboard the Marine National Facility Research Vessel, Southern Surveyor.

On the hunt for subsea volcanic and hot-spring activity, the team of geologists located the volcanoes while mapping previously uncharted areas. Using high-tech multi-beam sonar mapping equipment, digital images of the seafloor revealed the formerly unknown features.
The summits of two of the volcanoes, named ’Dugong’, and ’Lobster’, are dominated by large calderas at depths of 1100 and 1500 metres.
During the six-week research expedition in the Pacific Ocean, scientists from The Australian National University (ANU), CSIRO Exploration & Mining and the USA, collaborated to survey the topography of the seafloor, analysing rock types and formation, and monitoring deep-sea hot spring activity around an area known as the North Lau Basin, 400 kilometres northeast of Fiji.
The voyage’s Chief Scientist, ANU Professor Richard Arculus describes the terrain – the result of extreme volcanic and tectonic activity – as spectacular. “Some of the features look like the volcanic blisters seen on the surface of Venus,” he says.
“These active volcanoes are modern day evidence of mineral deposition such as copper, zinc, and lead and give an insight into the geological make-up of Australia,” he says.
“It provides a model of what happened millions of years ago to explain the formation of the deposits of precious minerals that are currently exploited at places like Broken Hill and Mt Isa. It may also provide exploration geologists with clues about new undiscovered mineral deposits in Australia.
“These deep-sea features are important in understanding the influences that have shaped not only our unique continent but indeed the whole planet,” Professor Arculus says.
Such discoveries highlighted man’s lack of knowledge about the world’s oceans. “We know more about the surface of Mars than we know about the ocean seafloor,” Professor Arculus says.
CSIRO’s Director of Research Vessels, Captain Fred Stein, says the expedition was a humbling experience. “It was a reminder that at the beginning of the 21st century it is still possible – on what is often regarded as a thoroughly explored planet – to discover a previously unknown massif larger than Mt Kosciuszko,” he says.
“We are fortunate that we can offer the scientific capability of the Southern Surveyor to Australian scientists. It’s the only Australian research vessel that can provide the opportunity to conduct such valuable research to make these kinds of discoveries possible.”

Source: http://www.sciencedaily.com/releases/2008/06/080619093259.htm

Chinese scientists call for better quake prediction

BEIJING] Scientists in China are calling for improvements in earthquake prediction, including the establishment of an early-warning system and methods for scientists to share quake information.
The calls come after the Sichuan earthquake — the country's most serious earthquake in 30 years — hit on 12 May (see China displays openness in earthquake response).
Ni Sidao, a professor of geophysics at the University of Science and Technology of China, says that although current scientific methods cannot accurately predict an earthquake, an early-warning system could alert people to leave for open spaces before buildings are destroyed.
Ni made his remarks last week (25 May) alongside other scientists at the China Science and Humanities Forum in Beijing, operated by the Graduate University of the Chinese Academy of Sciences.
He said that P waves — early-arriving non-destructive seismic waves — can be used to detect and calculate the scale of an earthquake within ten seconds with the aid of computers.
In the case of Sichuan, the later-arriving, destructive seismic waves (S waves) took 30 seconds to reach Beichuan — the most seriously hit county, 90 kilometres north of the epicentre — and nearly 100 seconds to reach Qingchuan County, 200 kilometres from the epicentre.
People in Beichuan could have had a ten-second warning of the earthquake with an early-warning system, allowing some to move outdoors and trains to stop to avoid derailing, said Ni.
But he admitted that current seismic monitoring stations in most parts of China are too isolated to form a warning network.
Ren Luchuan, a senior researcher at China Earthquake Networks Centre (CENC), welcomes Ni's suggestions, but says such a system is very difficult to operate.
"[The time difference between P and S waves] is so short that it is very hard to establish a system to notify residents," he told SciDev.Net, though he says such a system could be used for key sites such as nuclear power stations, which could close reactors.
Longer-term prediction seems to be just as fraught with problems.
In the latest issue of the Chinese language journal Science and Technology Review (28 May), Wu Lixin from the Chinese University of Mining and Technology, Beijing, and colleagues report an abnormal temperature rise in the thermal satellite images of the eastern front of Qinghai–Tibet plateau — the fault that caused the earthquake — 20 days before the Sichuan earthquake.
The authors suggested this rise could be caused by tectonic plate movement, and could be an indicator for earthquake prediction.
But Ren says many factors could cause the abnormal temperature increases, leading to uncertainty in using temperature change to predict earthquakes.
In a separate article published in the same issue, however, Wu writes that there should be more intensive, accurate and consistent analyses of thermal satellite images, and that these should be frequently checked against seismic wave monitoring.
In addition, Wu says an earthquake information sharing system should be established, so that general researchers can analyse or input data about abnormal observations into a system for professional seismologists to screen.

Source : http://www.scidev.net/en/news/chinese-scientists-call-for-better-quake-predictio.html