• Episode 4: Milankovitch Cycles

  • Dec 30 2024
  • Durée: 1 h et 11 min
  • Podcast

Episode 4: Milankovitch Cycles

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  • Résumé

  • The deep dive of episode 4 is on Milankovitch Cycles. For a full list of references, see the post on my website: https://raisedbeaches.net/2024/12/30/raised-beaches-podcast-episode-4/

    Listen here: https://raisedbeaches.buzzsprout.com/

    Watch here: https://www.youtube.com/@evangowan

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    Episode 4 - Intro
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    I discuss what I have been doing in November and December 2024, as well as an overview of all of 2024.

    - Current work on ice sheet reconstructions.
    - Trip to Okinawa and a discussion on the sea level indicators there, based on beachrock.
    - Some discussion of the Aso Caldera in Kyushu.
    - The anomalously hot water around Japan, and how it is affecting the fisheries.
    - The ammonite fossil exhibit at Kumamoto University.
    - Overview of my activities in 2024.


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    Episode 4 Deep Dive - Milankovitch Cycles
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    I introduce Milankovitch Orbital Theory and Milankovitch Cycles, and why orbital variability is the main control on paleoclimate changes. I also give examples of well known proxy records that demonstrate Milankovitch Cycles.

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    Episode 4 - More on Milankovitch Cycles
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    I discuss about James Croll's hypothesis on orbital changes being responsible for climate changes, which predates Milankovitch's theory, Charles Darwin's remarks on it, as well as why it was not accepted. I also discuss Milankovitch Cycles on Mars.


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    Episode 4 - Papers
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    I discuss a paper that I am coauthor on, led by Karla Rubio-Sandoval, which is an investigation of four raised beach/shoreline deposits in Camarones, Argentina. This research was part of the WARMCOASTS project, which I was part of.

    References:

    - Rubio-Sandoval et al (2024) - Quaternary and Pliocene sea-level changes at Camarones, central Patagonia, Argentina: https://doi.org/10.1016/j.quascirev.2024.108999

    Thanks to Alessio Rovere for some of the pictures used here, and of course for being a great mentor on investigating raised coastal deposits!

    WARMCOASTS - Sea level and extreme waves in the Last Interglacial: This project received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement no. 802414)

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    Thank you to:
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    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: https://www.youtube.com/channel/UC5GTc4yWm-yiBFTuV3MsGaQ

    Follow Dr. Evan J. Gowan on social media:

    Mastodon: @DrEvanGowan@fediscience.org

    Bluesky: @evangowan.bsky.social
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