Search the Community
Showing results for tags 'tree rings'.
-
The Long-Lost Tale of an 18th-Century Tsunami, as Told by Trees
Oxytropidoceras posted a topic in Fossil News
The Long-Lost Tale of an 18th-Century Tsunami, as Told by Trees Local evidence of the cataclysm has literally washed away over the years. But Oregon’s Douglas firs may have recorded clues deep in their tree rings. Max G. Levy, Wired Magazine, September 29, 2021 the paper is: Dziak, R. P., Black, B. A., Wei, Y., and Merle, S. G., 2021, Assessing local impacts of the 1700 CE Cascadia earthquake and tsunami using tree-ring growth histories: a case study in South Beach, Oregon, USA, Nat. Hazards Earth Syst. Sci., 21, 1971-1982. Related paper is; Patton, J. R., Goldfinger, C., Morey, A. E., Romsos, C., Black, B., Djadjadihardja, Y., and Udrekh: Seismoturbidite record as preserved at core sites at the Cascadia and Sumatra-Andaman subduction zones, Nat. Hazards Earth Syst. Sci., 13, 833-867. Yours, Paul H.-
- 2
-
- 18th-century
- cascadia
- (and 7 more)
-
Tree rings may hold clues to impacts of distant supernovas on Earth University of Colorado at Boulder, November 11, 2020 https://www.sciencedaily.com/releases/2020/11/201111144400.htm Tree rings may hold clues to earthly impacts of distant supernovas https://www.sciencealert.com/traces-of-supernovae-could-be-locked-in-the-rings-of-ancient-trees https://sciencesprings.wordpress.com/2020/11/14/from-university-of-colorado-boulder-tree-rings-may-hold-clues-to-earthly-impacts-of-distant-supernovas/ The paper is; Brakenridge, G.R., Solar system exposure to supernova γ radiation. International Journal of Astrobiology, pp.1-14. Yours, Paul H.
-
- 2
-
- c14
- dendrochronology
- (and 6 more)
-
One of the strongest known solar storms blasted Earth in 660 B.C.
Oxytropidoceras posted a topic in Rocks & Minerals
One of the strongest known solar storms blasted Earth in 660 B.C. Traces left in ice cores and tree rings allowed researchers to estimate the storm’s power, Carolyn Grambling, March 11, 2019 https://www.sciencenews.org/article/one-strongest-known-solar-storms-blasted-earth-660-bc Ice cores reveal huge solar storm struck Earth around 660 BC Hamish Johnston, Physics World, March 12, 2019 https://physicsworld.com/a/ice-cores-reveal-huge-solar-storm-struck-earth-around-660-bc/ The paper is: O’Hare, P., Mekhaldi, F., Adolphi, F., Raisbeck, G., Aldahan, A., Anderberg, E., Beer, J., Christl, M., Fahrni, S., Synal, H.A. and Park, J., 2019. Multiradionuclide evidence for an extreme solar proton event around 2,610 BP (∼660 BC). Proceedings of the National Academy of Sciences, p.201815725. https://www.pnas.org/content/early/2019/03/05/1815725116.short Yours, Paul H.-
- 2
-
- beryllium-10
- carbon-14
- (and 6 more)
-
Geologists uncover Antarctica's fossil forests (Permian)
Oxytropidoceras posted a topic in Fossil News
Antarctica's 260-Million-Year Old Permian Epoch Forests Uncovered (VIDEO), The Daily Galaxy, November 09, 2017 http://www.dailygalaxy.com/my_weblog/2017/11/antarcticas-260-million-year-old-permian-epoch-forests-uncovered.html Geologists uncover Antarctica's fossil forests November 9, 2017 by Matthew Wamser https://phys.org/news/2017-11-geologists-uncover-antarctica-fossil-forests.html http://uwm.edu/news/uwm-geologists-uncover-antarcticas-fossil-forests/ Other papers about other Permian Forests Luthardt, L. and Rößler, R., 2017. Fossil forest reveals sunspot activity in the early Permian. Geology, 45(3), pp.279-282. https://pubs.geoscienceworld.org/geology/article-lookup/45/3/279 Luthardt, L., Rößler, R. and Schneider, J.W., 2017. Tree- ring analysis elucidating palaeo-environmental effects captured in an in situ fossil forest–The last 80 years within an early Permian ecosystem. Palaeogeography, Palaeoclimatology, Palaeoecology, 487, pp.278-295. http://www.sciencedirect.com/science/article/pii/S0031018217300974 Yours, Paul H.-
- 1
-
- antarctica
- fossil forest
- (and 4 more)