4 ms·
This page is very rough and shouldn't be considered scientific. I didn't even find a link or the actual study name on the page. Not only that, Dr. Thanh-Son Pha
by IncRnd 4y ago
This page is very rough and shouldn't be considered scientific. I didn't even find a link or the actual study name on the page. Not only that, Dr. Thanh-Son Pham is listed as a co-author but the page doesn't even mention the name of the second author, Hrvoje Tkalčić.
I was able to find the home page for Dr. Thanh-Son Pham [1] and his google scholar page with his list of publications. [2] He looks extremely accomplished and a prolific researcher, especially for someone who appears to be so young. I was very impressed and can only think that others would have also liked to have a link to this paper. I found the actual paper online. [3]
Abstract:
Probing the Earth’s center is critical for understanding planetary
formation and evolution. However, geophysical inferences have been
challenging due to the lack of seismological probes sensitive to the
Earth’s center. Here, by stacking waveforms recorded by a growing
number of global seismic stations, we observe up-to-fivefold
reverberating waves from selected earthquakes along the Earth’s
diameter. Differential travel times of these exotic arrival pairs,
hitherto unreported in seismological literature, complement and
improve currently available information. The inferred transversely
isotropic inner-core model contains a ~650-km thick innermost ball
with P-wave speeds ~4% slower at ~50° from the Earth’s rotation axis.
In contrast, the inner core’s outer shell displays much weaker
anisotropy with the slowest direction in the equatorial plane. Our
findings strengthen the evidence for an anisotropically-distinctive
innermost inner core and its transition to a weakly anisotropic outer
shell, which could be a fossilized record of a significant global
event from the past.
[1] https://sites.google.com/view/tsonpham/home https://sites.google.com/view/tsonpham/home
[2] https://sites.google.com/view/tsonpham/publication https://sites.google.com/view/tsonpham/publication
[3] https://www.nature.com/articles/s41467-023-36074-2 https://www.nature.com/articles/s41467-023-36074-2
- mikeyouse 4y agoYeah it looks like that website just stole the text from CNN and omitted a bunch of it. CNN didn't interview the other authors, but at least their figures are properly attributed (all tagged with Drew Whitehouse/Son Phạm/Hrvoje Tkalčic -- Whitehouse apparently works for National Computational Infrastructure and did the visualizations)and they directly link to the study. https://news.ycombinator.com/item?id=34929145 https://news.ycombinator.com/item?id=34929145
- photochemsyn 4y agoThanks for looking that up.