Articles for Seismic Waves

Scientists Discover ‘Doughnut’ In Molten Metal Of Earth’s Core
3 months, 3 weeks ago

Scientists Discover ‘Doughnut’ In Molten Metal Of Earth’s Core

News 18  

Approximately 2,890 kilometres beneath us lies an enormous ball of molten metal, which is our planet’s core, a new study has revealed. Speaking on the same, study co-author and Australian National University geophysicist, Professor Hrvoje Tkalcic, claimed that it was not possible for scientists to reach the planet’s core using existing technology. “By understanding the geometry of the paths of …

Earth Core Waves Seismic Tkalcic Seismic Waves Molten Metal
Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core
3 months, 3 weeks ago

Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core

Hindustan Times  

Canberra, About 2,890 kilometres beneath our feet lies a gigantic ball of liquid metal: our planet’s core. Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core Using a new way of studying these waves, my colleague Xiaolong Ma and I have made a surprising discovery: there is a large donut-shaped region of the core around the Equator, a few hundred …

Travel Region Earth Core Field Outer Waves
Scientists identify molten layer deep within interior of Mars
1 year, 1 month ago

Scientists identify molten layer deep within interior of Mars

The Hindu  

Seismic waves generated by a meteorite impact on the other side of Mars from where NASA's InSight lander sits have provided new clues about the Red Planet's deep interior, prompting scientists to reappraise the anatomy of Earth's planetary neighbour. The new seismic data indicates the presence of a hitherto unknown layer of molten rock surrounding a liquid metallic core - …

Mars Earth Core Martian Insight Seismic Waves Layer
SCIENCE NOTEBOOK | A 650-km thick solid metallic ball forms the earth’s innermost inner core
1 year, 9 months ago

SCIENCE NOTEBOOK | A 650-km thick solid metallic ball forms the earth’s innermost inner core

The Hindu  

Published : Mar 09, 2023 10:40 IST - 2 MINS READ Until recently, it was thought the earth’s structure comprised four distinct layers: the crust, the mantle, the outer core, and the inner core. This innermost inner core is a 650-kilometre thick solid “metallic ball” that sits within the centre of the inner core. The ANU’s Hrvoje Tkalcic said: “This …

Earth Core Waves Inner Seismic Waves
Scientists unlock secrets of Earth's wickedly hot innermost realm
1 year, 10 months ago

Scientists unlock secrets of Earth's wickedly hot innermost realm

The Hindu  

In Jules Verne's classic 1864 novel Journey to the Center of the Earth, adventurers descend through an Icelandic volcano into a vast underground world populated by prehistoric creatures as they explore our planet's interior. Researchers on Tuesday said an intensive study of Earth's deep interior, based on the behaviour of seismic waves from large earthquakes, confirmed the existence of a …

Earth Core Pham Outer Planet Waves Solid
Earth's inner core rotating slower than surface, study suggests
1 year, 10 months ago

Earth's inner core rotating slower than surface, study suggests

The Hindu  

Earth's inner core, a hot iron ball the size of Pluto, has stopped spinning faster than the planet's surface and might now be rotating slower than it, research suggested on Monday. "We believe the inner core rotates, relative to the Earth's surface, back and forth, like a swing," the study's authors, Xiaodong Song and Yi Yang of China's Peking University, …

Research Earth Core Study Surface Inner Seismic Waves
NASA's InSight lander reveals details on outermost layer of Mars
2 years, 1 month ago

NASA's InSight lander reveals details on outermost layer of Mars

Hindustan Times  

NASA's robotic InSight lander, in the twilight of its service after nearly four years on Mars, is revealing new details about Earth's closest planetary neighbor based on data from two big meteorite impacts that shed light on the Martian crust's structure. Researchers said on Thursday the stationary lander for the first time detected seismic waves traveling along the Martian surface, …

Mars Earth Nasa Martian Insight Seismic Waves Crust
‘Seismic waves’: IMF cuts global growth forecast over Russia war
2 years, 8 months ago

‘Seismic waves’: IMF cuts global growth forecast over Russia war

Al Jazeera  

Invasion of Ukraine drove up prices sharply in Europe, Caucasus and Central Asia, Middle East and North Africa, and sub-Saharan Africa, but is hurting lower-income households around the world. The International Monetary Fund slashed its forecast for global economic growth by nearly a full percentage point citing Russia’s war in Ukraine, and warned inflation was now a “clear and present …

Global Europe War Ukraine Russia Inflation Global Growth
NASA's InSight rover helps create first detailed map of the insides of Mars
3 years, 5 months ago

NASA's InSight rover helps create first detailed map of the insides of Mars

Firstpost  

The fate of almost everything on Earth’s surface is determined by infernal engines deep below. Now, thanks to an intrepid robot parked on the Martian surface by NASA in November 2018, scientists have a map of our neighbouring world’s geologic abysses, the first-ever made of another planet. Mars’ mantle also clues us in to why a planet that once built …

Science Mars Earth Core Surface Nasa Planet
Mars' core, measured on seismic waves, found to be 'surprisingly' large and thin
3 years, 5 months ago

Mars' core, measured on seismic waves, found to be 'surprisingly' large and thin

Hindustan Times  

Marsquakes, or seismic tremors on Mars, have revealed hitherto unknown aspects about the anatomy of the red planet. The findings, now published over three studies in the Science journal, were the result of a thorough analysis of the Martian surface carried out by Nasa's InSight probe which landed on the planet three years ago. Among other things, the InSight probe …

Mars Earth Core Probe Nasa Planet Martian
What are Earthquakes and How Are They Caused? Here's Everything You Need to Know
3 years, 11 months ago

What are Earthquakes and How Are They Caused? Here's Everything You Need to Know

News 18  

Our planet is made up of core at its centre that is then followed by mantle and finally the crust, which is the land that we see. It is the slip or fault felt by these tectonic plates that causes massive destruction or even tsunamis on the surface of the earth. These waves are also called seismic waves as they …

Earthquakes Earth Earthquake Surface Plates Waves Seismic Waves
Scientists Use Seismic Waves to Identify Chemical Reactions Beneath a Watershed
4 years, 4 months ago

Scientists Use Seismic Waves to Identify Chemical Reactions Beneath a Watershed

News 18  

Scientists have used seismic waves to identify chemical reactions that occur below the surface of Earth. During the research, published in the journal Proceedings of the National Academy of Sciences, the team relied on human-generated seismic waves, similar to what generated from an earthquake. The logging tool helped produce and propagate a seismic wave, which is used to examine the …

Water Wave Seismic Waves
Seismic waves used to 'see' chemical reactions underground, may protect water quality: Study
4 years, 4 months ago

Seismic waves used to 'see' chemical reactions underground, may protect water quality: Study

Firstpost  

Researchers managed to see under the surface to assess chemical reactions that alter the quality of groundwater. A team of researchers led by the Penn State University have found that seismic waves can be used to identify certain chemical reactions that take place under the ground level and help protect the quality of water. Since these chemical reactions can alter …

Water Earth Surface Waves Seismic Seismic Waves Chemical Reactions
Previously unknown faults at the foot of the Himalaya discovered
4 years, 5 months ago

Previously unknown faults at the foot of the Himalaya discovered

The Hindu  

Data from an oil and gas exploration company has now helped geologists discover a series of faults at the foot of the Himalaya. “This network of faults show that the Himalayan deformation reaches further than we previously thought.” He is the first author of the paper recently published in the journal Proceedings of the National Academy of Sciences. Waldron explained …

India Earthquakes Earthquake Fault Faults Seismic Waves Himalaya