Tsunami alert activated for Greece after magnitude 6 earthquake
As per GFZ, the earthquake struck at a depth of 77km.
As per ESMC, a tsunami risk is under evaluation. "Depending on earthquake-coastline distance, tsunamis can be local (<100km), regional (<1000km), or distant (>1000km)," stated the European-Mediterranean Seismological Centre.
This is a developing story...
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India Today
2 hours ago
- India Today
Magnitude 5.2 earthquake strikes northern Iran
A magnitude 5.2 earthquake hit northern Iran on Sunday, according to the European Mediterranean Seismological Centre (EMSC). The quake occurred at a shallow depth of just 3 kilometres (1.86 miles), raising concerns about potential surface-level impact. No immediate reports of damage or casualties were June, a 5.1-magnitude earthquake struck northern Iran's Semnan region, with the epicentre located 27 kilometres southwest of the city, according to the Tasnim News Agency. The quake occurred at a depth of 10 epicentre's proximity to the Semnan Space Centre and the Semnan Missile Complex, both operated by Iran's military, raised questions about whether the quake could have been caused by a clandestine nuclear test. The incident unfolded during heightened regional tensions, as Iran and Israel were involved in military exchanges. Iran has continuously said that it would not negotiate over its nuclear program under threat, while European nations continued to push for de-escalation and renewed located along the Alpine-Himalayan seismic belt where the Arabian and Eurasian tectonic plates meet, is among the most earthquake-prone countries in the experiences frequent seismic activity, averaging around 2,100 earthquakes annually. Of these, nearly 15 to 16 quakes reach a magnitude of 5.0 or higher. Between 2006 and 2015 alone, the country recorded a staggering 96,000 earthquakes, highlighting its position as one of the most seismically active regions in the world.- EndsMust Watch
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First Post
2 days ago
- First Post
Why 1.5-million-yr old ice is set to be melted in the UK
Ice, which is thought to be around 1.5 million years old, was retrieved from deep inside the Antarctic ice sheet. It has been brought to the United Kingdom where researchers hope that the it will shed some light on Earth's previous climate cycles read more The Beyond EPICA cores were collected from Dome C in East Antarctica over several years. Image courtesy: PNRA:IPEV Ice that is 1.5 million years old is set to be melted down in the UK. The ice, which is said to be the planet's oldest, was retrieved from deep inside the Antarctic ice sheet. It has been brought to the United Kingdom for scientists to observe and examine. But what do we know about it? Why it is being melted down in the UK? What we know The ice was retrieved from a depth of 2,800 metres underwater in East Antarctica. The region, known as Little Dome C, is located on the upper reaches of the Antarctic plateau. STORY CONTINUES BELOW THIS AD The mission is part of the Beyond EPICA (European Project for Ice Coring in Antarctica) Oldest Ice project. The team comprises researchers from 10 European nations and a dozen institutions. Those behind the mission, which was launched in 2019 and funded by the European Commission, want to decode Earth's climate history when it comes to ice core records. Thus far, when it comes to examining ice cores, we have records for around 800,000 years. They aim to extend this as far back as 1.5 million years. Millions of dollars were spent on extracting the ice cores from the Antarctic ice sheet. The cores were then divided into 1 metre blocks and shipped to the UK. They were then taken to Cambridge in a cold van. Some of it is currently being stored at the British Antarctic Survey in Cambridge. 'To hold that in my carefully gloved hands and be very careful not to drop the sections - it was an amazing feeling,' engineer James Veale told BBC. Scientists will use an instrument called the inductively coupled plasma mass spectrometer (ICPMS) to examine the ice for nearly two dozen elements and trace metals. STORY CONTINUES BELOW THIS AD Dr Liz Thomas holding the oldest ice core. Image courtesy: Image courtesy: PNRA:IPEV Two institutions in Germany and Switzerland also have received chunks of the ice core. The ice will be melted slowly over the next few weeks and examined in a state-of-the-art lab next door. The ice cores may contain carbon dioxide, methane or dust particles that can be examined as well as rare earth elements, sea salts and marine algae called diatoms. They will also reveal details about wind patterns, temperatures, and sea levels more than a million years ago. Why is it being melted down? Scientists hope the examination of the ice will reveal the secrets of Earth's previous climate cycles. The results may perhaps explain why sea levels rose and the ice sheets shrank between 800,000 and 1.5 million years ago. 'The project is driven by a central scientific question: why did the planet's climate cycle shift roughly one million years ago from a 41,000-year to a 100,000-year phasing of glacial-interglacial cycles?' Dr Liz Thomas, head of the ice cores team at the British Antarctic Survey told Sky News. Essentially, the Earth had been transitioning from warmer eras to cold ages roughly every 41,000 years. STORY CONTINUES BELOW THIS AD However, during the Mid-Pleistocene Transition era, around 800,000 to 1.2 million years ago, this transition suddenly shifted to every 100,000 years. We still don't understand why. 'This is a completely unknown period of our Earth's history', Thomas told BBC. Many researchers consider this to be one of the most puzzling and exciting secrets that science has yet to uncover. They also think examining Earth's past will help give human beings a further understanding of the future potential impact of climate change. 'Our climate system has been through so many different changes that we really need to be able to go back in time to understand these different processes and different tipping points,' Thomas told BBC. 'By extending the ice core record beyond this turning point, researchers hope to improve predictions of how Earth's climate may respond to future greenhouse gas increases', Thomas added. The rise of sea-levels is a major concern around the world in the 21st Century. STORY CONTINUES BELOW THIS AD With inputs from agencies
The Hindu
2 days ago
- The Hindu
Stepping stone: on Shubhanshu Shukla, NASA-Axiom-ISRO tie-up
A crew of four astronauts including India's Shubhanshu Shukla completed their roughly two-week mission to the International Space Station on July 15. Mr. Shukla's trip was presumed to have been an intensive rehearsal ahead of his flight as part of India's first batch of astronauts for ISRO's 'Gaganyaan' mission, currently expected in 2027. The presumption is because the goals of Mr. Shukla's trip, which ISRO arranged for by paying north of ₹500 crore to Axiom Space, have not been officially communicated by Indian authorities. Fortunately, clarifications from Axiom and NASA have since cast more light on its purpose. While ISRO and the Department of Space are still expected to proactively disseminate what they know about their activities under Gaganyaan, not least because of the mission's ₹20,000 crore price tag, Mr. Shukla's trip ought to strengthen ISRO's preparations. Human spaceflight is a highly involved endeavour: once in space, the crew is on its own and the resources to respond to a variety of situations are limited. According to a statement ISRO published after the mission launched on June 25, Mr. Shukla and Prasanth Nair — who is also part of Gaganyaan's first cohort of astronauts and was part of the Axiom mission's backup crew — were familiarised with 'advanced spacecraft systems, emergency protocols, scientific payload operations, microgravity adaptation, space medicine, and survival traits'. As the mission pilot, per Axiom, Mr. Shukla was also coached on docking and undocking, manual operations, atmospheric reentry, and anomaly management. Onboard the space station, Mr. Shukla was exposed to operations in the Japanese and European modules, for which he and Mr. Nair were trained in Japan and Germany. ISRO Chairman V. Narayanan has also said that the Axiom mission cost less than what ISRO might have had to invest if it had to train Mr. Shukla on its own. In all, the NASA-Axiom-ISRO tie-up emerges as an admirable outcome, even as space agencies continue to closely guard space technologies for their strategic value. Concerns that the limitations imposed by the U.S.'s International Traffic in Arms Regulations would prevent the duo from learning much may also be laid to rest. Instead, they may be replaced by concerns about ISRO's piecemeal communication. Astronauts cut inspirational figures and appeal to all ages. As India prepares for its first human spaceflight mission, there can be no better way to build excitement than by facilitating access to India's astronauts. The lack of initiative is hard to rationalise, although it is still not too late. ISRO as well as India's soft power platform will make copious gains by expanding outreach and easing public access to the spacefarers.
