China Pearl River Delta Sea Level Rise Earlier In The Holocene Was Far More Extreme Than Today

A recent study by Xiong et al titled Holocene sea-level history of the northern coast of South China Sea tells us that sea level rise today is total within the range of natural variability.

The scientists collected and analyzed seven sediment cores from the Pearl River delta, from which they generated 16 new and high-quality sea-level index points.

The paper’s abstract writes that the study “re-checked and re-calibrated the previously published sea-level data from China’s southeast coast with corrections made for tectonic subsidence and sediment compaction factors.”

The results, the authors report:

These sea-level data indicate a rise of relative sea level from −49.3 ± 0.8 m to the present height between 10,500 and 7000 cal. a BP. This sea-level history is similar to those recorded from other far-field locations and ice-volume equivalent sea-level models. The early to early-middle Holocene sea-level history in the study area shows a phase of accelerated rise at a rate increasing rapidly from 16.4 ± 6.1 mm/a at 10,500 cal. a BP to 33.0 ± 7.1 mm/a at 9500 cal. a BP. This phase was followed by a period of rapid decrease in the rate of sea-level rise to 8.8 ± 1.9 mm/a at 8500 cal. a BP and 1.7 ± 1.3 mm/a at 7500 cal. a BP. During the past 7000 years, the relative sea level in the study area changed very little. This new and complete history of Holocene sea-level change supports the following findings: (1) no obvious higher-than-present sea-level highstand in the Holocene is found from the northern South China Sea; (2) certain proportion of the effects of the predicted glacial isostatic adjustment were cancelled out by the effects of the weak upper mantle viscosity in the study area; (3) meltwater pulse 1b likely exists spanning into the early Holocene; (4) there are significant misfit between sea-level data and glacial isostatic adjustment models, and a revision to the existing ice melting history for the early Holocene is possibly needed.”

Overall the study finds: “The rate of relative sea-level rise had varied and peaked at 33.0 ± 7.1 mm/a around 9500 cal. a BP.”

When comparing today’s current sea level rise of just 2 mm/yr as measured from a vast array of tide gauges worldwide, we get the sense that this is puny in comparison to the changes the earth experienced over the Holocene (the past 10,000 years).

Sea levels were higher than today when CO2 was much lower

Also read here how 75 recent scientific publications show sea levels were 2 meters higher than they are today, even though CO2 in the atmosphere was much less at 265 ppm.

7 responses to “China Pearl River Delta Sea Level Rise Earlier In The Holocene Was Far More Extreme Than Today”

  1. Penelope

    I’ve only a moment this morning, so the following link may not be the best one in documenting that a factor in sealevel rise in the Pearl River delta may be LOWERING of the delta due to fish farmiing.

    1. Yonason

      Thanks, Penelope, for that interesting and new to me link.

  2. Brian G Valentine

    I don’t have access to the paper, but I would like to see the sediment analyses to understand the fresh water composition change and carbonate deposition changes.

    This degree of variability over the past 10 000 years has been known for some time and I wonder, what are the origins of the late 20th-century sea level rise panic? Who started it?

  3. Penelope

    Brian, “Who started it?” The First Cause is the people who are paying for the AGW hoax:
    This Senate Report discloses in detail the methods by which the perpetrators control the environmental movement.

    A major element in the falsification of sealevel stats is via the addition of a spurious amount to satelite estimations. The spurious addition is arrived at by estimation of the amount the land is continuing to spring back from the absence of an ice sheet. I.e., the amount of sealevel rise would be greater were it not for this spring back, and therefore we can add it to the satelite estimates.

    I suppose if you find out who is father to this spurious amount you would be close to finding out one of the people employed by the oligarchic class mentioned in the Senate Report. The object of the greater AGW hoax is to implement Agenda 21 & other freedom-eating measures on the way to a one-world oligarchic govt.

    1. spike55

      Those satellite sea level “adjustments” seem to have started somewhere between 2000 and 2003

  4. Penelope

    Thanks, spike55. I don’t have time to research it, but I remember that Friends of Science had a very detailed report on this particular aspect of the sealevel-rise element to the AGW hoax.

  5. Penelope

    Brian, you wrote “I don’t have access to the paper, but I would like to see the sediment analyses to understand the fresh water composition change and carbonate deposition changes.”

    I’m not sure what paper you’re referring to, but if you meant my link about the fish farming, it didn’t supply that kind of detail. The causality cited is just that fish farming is water-intensive, and when water is removed from coastal lands, the land settles. Lower coastal lands then are subject to more flooding, which further erodes the coast.

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. More information at our Data Privacy Policy