The Indian government had recently announced wide-reaching upgrades, including high-speed trains, but many of the upgrades remain years away. The railway system was constructed during British colonial rule in the 19th century. The network is also a lifeline for trade, with more than 1.5 billion tonnes of freight being transported annually. Indian Railways, a state monopoly, operate the network, which consists of 64,000km (40,000 miles) of track. India’s railway network is the fourth largest in the world – after the United States, Russia and China – and carries about 13 million passengers on 14,000 passenger trains every day. He accused the BJP of criminal neglect of the “signalling system” as well as skipping railway safety presentations just hours before the accident. It goes well beyond headline politics to the very core of how rail safety & track renewals have taken a backseat, while high-profile inaugurations & an obsession with speed get priority. Here’s our detailed statement on the Odisha train tragedy. Jairam Ramesh, an MP from the opposition Congress party, attacked the ruling Bharatiya Janata Party (BJJ) for “man-made devastation caused by utter negligence”. Its coaches then fell onto the tracks on either side, also derailing the Howrah Superfast Express.” KS Anand, chief public relations officer of the South Eastern Railway, told Reuters news agency, “The Coromandel Express was supposed to travel on the main line, but a signal was given for the loop line instead, and the train rammed into a goods train already parked over there. But the cause has been identified, and the people responsible for it have been identified.”
Speaking to the Indian news agency ANI, Vaishnaw said, “Let the inquiry report come out.
If the electronic interlocking system is fully operational, a train will not be given a signal unless the computers deem the route safe and clear of any other traffic.
SOFAR SHOW SERIES
Injured passengers at a local hospital in Balasore, Odisha īefore the introduction of an electronic system, signals were operated manually by a series of rods and levers. Railway Minister Ashwini Vaishnaw said the crash had occurred “due to a change in electronic interlocking” and that an investigation would show “who was responsible for that mistake”.Īn electronic interlocking system is designed to keep railways safe by controlling train movements, operating signals and level crossings, establishing routes and checking rail sections are free. The passenger train derailed and hit another passenger train, the Yesvantpur-Howrah Superfast Express, which connects metro cities Bengaluru and Kolkata.Īt least 288 people have been confirmed dead, and more than 1,000 injured in what is India’s deadliest train crash in decades. In the early evening, a passenger train, the Coromandel Shalimar Express, travelling across the country between Shalimar in West Bengal state and Chennai in Tamil Nadu, hit a freight train carrying iron ore. Such as whale calls, earthquakes, and manmade noise occurring vastĭistances from the hydrophones.An investigation is under way into what caused the devastating three-way crash involving two passenger trains and a freight train in eastern Odisha state on Friday. Hydrophones at the axis of the sound channel, researchers can record sounds This up-and-downīending of low-frequency soundwaves allows soundwaves to travel greatĭistances without the signal losing significant energy. Various layers and can travel for hundreds of miles. Saltier and colder water lie beneath less salty, warmer water.īecause of SOFAR, sound emitted at a certain depth bounces between these That ocean layers occur due to differences in salinity (salt content) and How does SOFAR work? Think of the ocean as consisting of various zones, or layers - sort of like oil and vinegar salad dressing before it’s shaken up - except As the scientists noted, “The end of the sound channel transmission was so sharp that it was impossible for the most unskilled observer to miss it.” That’s nearly the distance from Washington, DC,įor the first time, researchers heard what they termed SOFAR, or a SOund Fixing And Ranging Once detonated, theĮxplosion propelled pulses of sound that traveled the 900 hundred milesįrom one ship to the other. Some 900 miles away, another ship lowered a four-poundĮxplosive to a specific depth below the ocean surface. Theyĭeployed a hydrophone from their research vessel, which was anchored off of Woods Hole, Massachusetts.
Low-frequency sound could travel long distances in the deep ocean. At the height of World War II, scientists tested a theory that
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