New Study: 3500 Years Ago Shorelines Were 6 Kilometers Further Inland Than Today Around Thailand

Relative sea level change over the Holocene documents a much warmer past than today.

Because it was so much warmer during the Early to Middle Holocene (~8000 to ~4000 years ago), there was significantly less water locked up on land (Greenland, Antarctica) in the form of ice sheets and glaciers. Instead, this water occupied ocean basins, explaining the meters-higher-than-present relative sea levels (RSL).
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Indeed, the reason sea levels were 2-3 m higher than today (and the shoreline tens of kilometers further inland relative to today) along the Persian Gulf ~6000 years ago was “almost wholly the consequence of the water-load term” (Lambeck, 1996).
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Now another new study (Ballian et al, 2024) reveals sea levels were 2-5 m higher than present 4000-7000 years ago in the tropics (Thailand) before they gradually fell to present levels over the last millennia. These higher sea levels are evidenced by beach ridges dated to 3500 years at 4 m elevations found 6 km inland from current shorelines.
Image Source: Ballian et al, 2024

A similar study for this region was published a few years ago (Oliver and Terry, 2019) revealing oyster fossil remains are encrusted into shoreline rock meters above the current water level, providing evidence sea surface temperatures were 2.6°C warmer than today and sea levels were “between 3.8 m ±0.1 m and 2.5 ±0.1 m above present day” along the coasts of Thailand during the Mid-Holocene.

Image Source: Oliver and Terry, 2019

5 responses to “New Study: 3500 Years Ago Shorelines Were 6 Kilometers Further Inland Than Today Around Thailand”

  1. Ethan Vos

    I think your headline is backwards. 3500 years ago the shoreline was 6 km inland.

  2. New Study: 3500 Years Ago Shorelines Were 6 Kilometers Further Inland Than Today Around Thailand - Climate- Science.press

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  3. dm

    Key unstated insight: People, flora & fauna SURVIVED the massive shift in sea levels and seashores. Some species even thrived. All did so without “help” from climate alarmists!!!

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