A medium intensity earthquake, measuring 5.4 on the richter scale has struck the Andaman islands.
As per reports from the Indian Meteorological Department(IMD), the tremors were felt at around 2:28 PM. However, no Tsunami warning has been issued and no casualties have been reported till now.
The quake comes in the backdrop of the massive 7.9 magnitude earthquake that jolted Nepal on Saturday, killing more than 6200 people. The landlocked nation still has not fully recovered from the calamity.
Back in 2004, a monster earthquake had struck the Indian Ocean, unleashing giant tsunami waves of more than 30 metres, which claimed more than 230,000 lives, mostly in the island nation of Indonesia.
Close to 3500 people had died and 4000 people were displaced in the Andaman and Nicobar islands during the 2004 tsunami.
A similar tsunami warning had been sounded in 2012, when people in the Andaman and Nicobar islands were evacuated to higher ground. The warning was later cancelled.
The ecologically fragile chain of islands, is known for its diverse forests, majestic coral reefs and splendid beaches.
A step has been taken by General V.K Singh to develop Andaman-Nicobar islands
Many ASEAN countries showed support on this decision
New Delhi, Dec 11: The Andaman and Nicobar group of islands will be developed as an economic and a strategic hub, Minister of State for External Affairs General V.K. Singh (retired) said on Monday.
Speaking at the ‘India-Asean Connectivity Summit’ organised by the Confederation of Indian Industry (CII), the Minister stressed on the need to focus on improving maritime connectivity with the Association of Southeast Asian Nations (Asean).
“There is a strong case for improving maritime connectivity… Both Asean and India are endowed with several islands,” Singh said.
India will cooperate with the 10 Asean countries — Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam — to establish a regional maritime transport system, he said.
“…India has taken initiative to build Andaman and Nicobar group of islands as an economic and strategic hub in the Bay of Bengal. Asean is also investing in its own islands.
“…There is scope to unlock the vast potential in cooperation, particularly in tourism, maritime security, disaster management, between us and the Asean,” he said.
Andaman and Nicobar islands are a major strategic centre for Indian armed forces and have the only Tri-service theatre command based in Port Blair.
The summit, which focuses on enhancing connectivity with Asean, comes ahead of the visit of the leaders of the Asean states here in January to mark 25 years of the India-Asean dialogue partnership.
In a historic first, the 10 leaders will collectively be the chief guests at the Republic Day celebrations here in January 2018.(IANS)
Bengaluru, October 16, 2017 : Continuous monitoring of water levels in the foothills of the Himalayas can warn about an impending earthquake in the region, which is due for a major temblor.
This recommendation to the Ministry of Earth Sciences has come from Ramesh Singh, professor of environmental sciences at California’s Chapman University, who is also president of the Natural Hazards Group of the American Geological Union.
Singh says the utility of monitoring the water levels of underground aquifers for predicting earthquakes in quake-prone regions has been confirmed from analysis of water level data in a bore hole collected during the earthquake that rocked Nepal’s Gorkha district on April 25, 2015.
The findings of the study carried out by Singh and three seismologists from China have recently been published in the journal Techtonophysics.
The Gorkha quake, one of the deadliest in Nepal, killed about 5,000 people mainly in Nepal, a few in bordering India, two in Bangladesh and one in China, and injured about 9,200 people.
Whenever earthquakes occur, widespread cracks and deformations on the earth’s surface are common, resulting in changes in groundwater levels, Singh told this correspondent in an email.
In China, many parameters are being monitored in water wells, including water level, water temperature, and water radon concentrations to detect any signal prior to an impending earthquake.
According to the scientists, due to seismic wave propagation, the volume of an aquifer expands and contracts, forming fractures that change the water flow in a bore well sunk into the aquifer.
In the case of the Gorkha quake, the scientists considered the water level in a bore well — called “Jingle” well — atop an aquifer in China’s Shanxi province, 2,769 kilometres from the temblor’s epicenter. The data was analysed soon after the Nepal earthquake.
A “spectrum analysis” of the co-seismic response of the bore hole water level showed large amplitude oscillations with a maximum peak-to-peak value of about 1.75 metres associated with ground vibrations generated by the earthquake, says their report.
In addition, the analysis revealed the arrival of a possible precursor wave at the “Jingle” well about 6.5 hours prior to the actual occurrence.
“The study of co-seismic changes in groundwater has emerged as an important research area which can provide an improved understanding of earthquake processes and corresponding changes in surface and subsurface parameters,” Singh said.
Water level data in close proximity to the epicenter may be of great importance in getting early warning signals of an impending earthquake, he said. China and the United States routinely monitor aquifer water levels at 15-minute intervals.
In the light of the finding, Singh said that “India’s Ministry of Earth Sciences may consider deploying water level sensors in the Himalayan foothills areas, which may provide valuable information about an impending earthquake in the Himalayan region, which is due for a major earthquake.”
Such data, he added, “is also useful in understanding the dynamic nature of the Indian plate”.
However Arun Bapat, former head of Earthquake Engineering Research at the Central Water and Power Research Station in Pune, says he has some reservations about the study’s conclusion that water level changes observed in the bore hole were the warning signal for the Gorkha earthquake.
“Various effects associated with a large earthquake (Magnitude 7.5 or more) such as electrical, magnetic, geological, tectonic, hydraulic, radioactivity, etc., have been observed within about 600 to 800 km from the epicenter (but not beyond),” Bapat told IANS.
Bapat said the magnitude of the Gorkha quake was about 6.5 to 6.75 which is considered as moderate. “The effect of this quake on water level changes at a distance of 2,769 kilometres from its epicenter is almost not possible.” (IANS)
Mexico, September 20, 2017 : A powerful earthquake of 7.1 magnitude struck Mexico city, leaving more than 200 people dead and many trapped under the collapsed buildings. At about 2.15 p.m. (local time) on Tuesday, the earthquake shook central Mexico, its epicenter was 4.5 km east-northeast of San Juan Raboso and 55 km south-southwest of the city of Puebla, in Puebla state.
“We are facing a new national emergency,” said Peña Nieto, President of Mexico, in his first televised address following the earthquake.
The earthquake was felt far and wide. In Mexico City, there were power outages and more than 40 buildings collapsed crushing cars and trapping people inside.
Dozens of buildings collapsed or were severely damaged in densely populated parts of nearby states also.
Thousands of soldiers, rescuers and civilians — including college students — in Mexico City clawed through the rubble with picks, shovels and their bare hands. Windows buckled and shattered, falling several stories to the ground while thousands of people streamed into the streets running away from buildings and potential gas leaks.
People struggled to get home when power poles that toppled in the quake blocked the streets and the public transportation system temporarily shut down operations. Nearly 5 million customers were still without power early Wednesday.
The earthquake came less than two weeks after a massive 8.1-magnitude quake hit the country on September 7 and killed nearly 100.
The earthquake took place on the anniversary of a devastating earthquake that killed thousands in Mexico City in 1985. Just hours before the quake hit, many people took part in drills and commemorative events.
All public and private schools in Mexico City and some of the states affected by the earthquake will remain closed until further notice, Education Minister Aurelio Nuño tweeted.
Foreign leaders sent messages of support to Mexico. US President Donald Trump, who has courted controversy with his plans for a border wall with Mexico, tweeted: “God bless the people of Mexico City. We are with you and will be there for you.”
Canadian Prime Minister Justin Trudeau also tweeted his support following the “devastating news”.