This is episode 1 of the Raised Beaches Podcast. This is the culmination of many months of planning to produce a podcast to discuss topics related to paleoclimate, Earth science and global change. In this episode, I introduce myself and discuss the highlights of the 2024 Japan Geoscience Union conference. The deep dive explains what “raised beaches” are. Finally I highlight a recent paper discussing a climate proxy record from the Marine Isotope Stage 11c interglacial.
Listen here: https://raisedbeaches.buzzsprout.com/
Watch here: https://www.youtube.com/@evangowan
Thank you to:
Raised Beaches Podcast logo by Aurooj: https://www.instagram.com/artbytinyleaf/
Sean for the Raised Beaches Podcast theme song
That Blasted Salami, who helped me get started (on Youtube): https://www.youtube.com/channel/UC5GTc4yWm-yiBFTuV3MsGaQ
Dr. Tomita at Kumamoto University, who has supported me the past three years.
My trip to Argentina was part of a European Research Council funded project called WARMCOASTS, which is led by Dr. Alessio Rovere – https://warmcoasts.eu/index.html
— Introduction references —
In the introduction, I introduce myself, and discuss the 2024 Japan Geoscience Union conference.
“My dream died, and now I’m here” by Sabine Hossenfelder: https://www.youtube.com/watch?v=LKiBlGDfRU8
Itaki et al (2020): using machine learning to detect radiolarians – https://www.nature.com/articles/s41598-020-77812-6
— Episode 1 Deep Dive: Raised Beaches —
I introduce what raised beaches are, and how they form. I then recount a conflict in the early era of geology with regards to raised beaches. Finally, I discuss my own experience investigating raised beaches and beach ridges in Argentina.
General references:
https://en.wikipedia.org/wiki/George_Bellas_Greenough
https://en.wikipedia.org/wiki/Charles_Lyell
https://en.wikipedia.org/wiki/Maria_Graham
https://en.wikipedia.org/wiki/1822_Valpara%C3%ADso_earthquake
https://en.wikipedia.org/wiki/Camarones,_Chubut
Papers refered to (in general order of appears):
Davidson-Arnott et al 2019: Introduction to coastal processes and geomorphology, second edition – https://doi.org/10.1017/9781108546126
Page and McMartin (2023): Ice-age legacy: a marine happening along western Hudson Bay, Nunavut and Manitoba – https://doi.org/10.4095/331896
Sedgwick and Murchison (1840): Description of a Raised Beach in Barnstaple or Bideford Bay, on the North-West Coast of Devonshire – https://doi.org/10.1144/transgslb.5.2.279
Dutton et al (2015): Sea-level rise due to polar ice-sheet mass loss during past warm periods – https://doi.org/10.1126/science.aaa4019
Dyer et al (2021): Sea-level trends across The Bahamas constrain peak last interglacial ice melt – https://doi.org/10.1073/pnas.2026839118
Farrell and Clark (1976): On Postglacial Sea Level – https://doi.org/10.1111/j.1365-246X.1976.tb01252.x
Mitrovica and Peltier (1991): On postglacial geoid subsidence over the equitorial oceans – https://doi.org/10.1029/91JB01284
Nelson and Manley (1992): Holocene coseismic and aseismic uplift of Isla Mocha, south-central Chile – https://doi.org/10.1016/1040-6182(92)90036-2
Rovere et al (2015): Mid-Pliocene shorelines of the US Atlantic Coastal Plain — An improved elevation database with comparison to Earth model predictions – https://doi.org/10.1016/j.earscirev.2015.02.007
Gowan (2014): Model of the western Laurentide Ice Sheet, North America – https://doi.org/10.25911/5d70f158a97f3
Edwards and Craven (2017): Relative sea-level change around the Irish coast – https://doi.org/10.2991/978-94-6239-219-9
Lyell (1830): Principles of Geology (1st edition, volume 1) – https://archive.org/details/b29328123_0001/
Lyell (1837): Principles of Geology (5th edition, volume 1) – https://archive.org/details/Lyell1837jf09J-a
Journal of the Royal Geological Society of Ireland, volume 1 (1838) [contains Shouler and Trimmer’s papers on raised beaches] https://archive.org/details/journalroyalgeo01dublgoog/
Thompson (2021): Maria Graham and the Chilean Earthquake of 1822: Contextualising the First Female-Authored Article in Transactions of the Geological Society –
https://doi.org/10.1144/sp506-2020-22
Details the conflict of Maria Graham and George Greenough at the Geological Society – https://www.geolsoc.org.uk/Library-and-Information-Services/Collection-Highlights/the-first-women/maria-graham
Graham (1824): An account of some effects of the late earthquakes in Chili – https://www.biodiversitylibrary.org/item/111775#page/509/mode/1up
Greenough (1834): Address delivered at the Anniversary Meeting of the Geological Soceity on the 21st of February 1834 – https://www.biodiversitylibrary.org/item/105665#page/56/mode/1up
Graham (1835): On the reality of the rise of the coast of Chile – https://www.biodiversitylibrary.org/item/53593#page/244/mode/1up
Lyell (1836): Address to the Geological Society, delivered at the Anniversary, on the 19th of February, 1836 – https://www.biodiversitylibrary.org/item/105665#page/273/mode/1up
Darwin (1846): On the elevation of the eastern coast of South America (chapter 1 in Geological Observations on South Amerrica) – https://archive.org/details/geologicalobser00fggoog/
Rubio-Sandoval et al (preprint): Quaternary and Pliocene sea-level changes at Camarones, central Patagonia, Argentina – https://doi.org/10.31223/X5X11H
Gowan et al (2021): Last interglacial (MIS 5e) sea-level proxies in southeastern South America – https://doi.org/10.5194/essd-13-171-2021
Rovere et al (2020): Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) – https://doi.org/10.1038/s43247-020-00067-6
— Episode 1 Papers —
Hu et al (2024): Sustained North Atlantic warming drove anomalously intense MIS 11c interglacial – https://doi.org/10.1038/s41467-024-50207-1
Tzedakis et al (2022): Marine Isotope Stage 11c: An unusual interglacial – https://doi.org/10.1016/j.quascirev.2022.107493
Raised Beaches 
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