Paul H. Wrote:
-------------------------------------------------------
> A 2022 SedsOne talk about Late Holocene sea level
> changes
> for the islands of Pohnpei and Kosrae concludes
> that
> the UNESCO World Heritage site of Nan Madol
> (Pohnpei)
> was built on dry land, instead of as islets
> separated by canals
> filled with ocean water. Nan Madol was built at a
> time when
> sea level was 0.26 meters lower. The implications
> of this
> research are that this site was built on dry land
> it famous
> canals are roads later flooded by sea level rise.
>
> The talk is:
>
> Late Holocene relative sea-level change with
> mangrove
> sediments in the western Pacific Ocean, Dr. J. P.
> Sefton, SedsOne
> [www.youtube.com]
>
> The details of this research, interpretations,
> conclusions,
> and data are in a paywalled paper:
>
> Sefton, J.P., Kemp, A.C., Engelhart, S.E.,
> Ellison, J.C., Karegar,
> M.A., Charley, B. and McCoy, M.D., 2022.
> . Implications of
> anomalous relative sea-level rise for the peopling
> of Remote
> Oceania. Proceedings of the National Academy of
> Sciences,
> 119(52), p.e2210863119.
>
> Another paper is:
>
> Comer, D.C., Comer, J.A., Dumitru, I.A., Ayres,
> W.S., Levin,
> M.J., Seikel, K.A., White, D.A. and Harrower,
> M.J., 2019.
> Airborne LiDAR reveals a vast archaeological
> landscape at
> the Nan Madol World Heritage Site. Remote Sensing,
> 11(18), p.2152.
> [www.maatforum.com]
> [www.researchgate.net]
> [www.researchgate.net]
>
> Yours,
>
> Paul H.

What is the normal tidal different at that location?