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Stories in the rocks, stories in the stars: A portrait of Frank Revetta

POTSDAM — Among birch and scattered beeches behind Colton-Pierrepont Central School, two solar panels rise above a vaulted door.

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Scientists Detect Signs of Hidden Structure Inside Earth s Core

While most of us take the ground beneath our feet for granted, written within its complex layers, like the pages of a book, is Earth's history.

Joanne stephensonJournal of geophysical researchAustralian national universityInternational seismological centreNational universityInternational seismologicalGeophysical researchSolid earth

University of Pretoria: West Africa should prepare for strong earthquakes, UP scientists warn

University of Pretoria: West Africa should prepare for strong earthquakes, UP scientists warn
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South africaKwazulu natalGreater accraAndrzej kijkoUniversity of pretoriaInternational seismological centreNatural hazard centreWest africaHazard centre

Discerning Structure and Seismic Hazards in the Sikkim Himalayas

Discerning Structure and Seismic Hazards in the Sikkim Himalayas A dense seismic network in operation since 2019 will provide new insights into the tectonics of seismically active Himalayan regions. Kanchenjunga, the third-highest mountain in the world, is seen here from the Tshoka basecamp near seismic station SK23. Credit: Seismology Group, Department of Geology and Geophysics, Indian Institute of Technology Kharagpur , Chandrani Singh, Arun Dubey, and Gaurav Kumar 17 March 2021 India is on the move and has been for a while. For the past 120 million years, since India and Africa began to split apart (leaving Madagascar in between), the tectonic plate on which India sits has been moving northward. This relentless movement, along with the region’s complex geological structure, eventually led to the formation of the towering Himalayas.

West bengalNepal generalIndian institute of technology kharagpurInternational seismological centreDepartment of geologySikkim himalayasIndian instituteTechnology kharagpurBrief historyIndian plateMain central thrustMain boundary thrustMain frontal thrustEarthquake catalogueMain himalayan thrustEurasian plates

Scientists believe Earth might be hiding a fifth layer to its geologic makeup

Their findings, suggesting that this inner inner core might indicate a second, extreme cooling event sometime in our world s past, are detailed in a new study recently published at the online scientific site, Journal of Geophysical Research: Solid Earth. Dr. Joanne Stephenson, lead author and PhD researcher in the Research School of Earth Sciences at the Australian National University explained that investigating the structure of the inner core can aid in understanding more about the Earth’s history and evolution. “Traditionally we’ve been taught the Earth has four main layers: the crust, the mantle, the outer core and the inner core, she said in a University press release. The idea of another distinct layer was proposed a couple of decades ago, but the data has been very unclear.”

Hrvoje tkalJoanne stephensonMalcolm sambridgeJournal of geophysical researchAustralian national universityInternational seismological centreResearch school of earth sciencesGeophysical researchResearch schoolEarth sciencesProfessor hrvoje tkalProfessor malcolm sambridgeஜொவந் ஸ்டீபன்சன்இதழ் ஆஃப் புவி இயற்பியல் ஆராய்ச்சிஆஸ்திரேலிய தேசிய பல்கலைக்கழகம்ஆராய்ச்சி பள்ளி ஆஃப் பூமி அறிவியல்