Lake El’gygytgyn Deposits and Long Climate Cycles

Watt’s Up With That reports new research on remote Siberian Lake El’gygytgyn with sedimentary layers which record climate for 2.8 million years. The climate reconstructions correlate with Arctic and Antarctic records. WUWT states in the article Claim: Fates of polar ice sheets appear to be linked:

Lake E was formed 3.6 million years ago when a huge meteorite hit Earth, leaving an 11-mile-wide crater. It’s been collecting layers of sediment ever since.

The lake is of interest to scientists because it has never been covered by glaciers. That has allowed the uninterrupted build-up of sediment at the bottom of the lake, recording hitherto undiscovered information on climate change.

Cores from Lake E go far back in time, almost 30 times farther than Greenland ice cores covering the past 110,000 years.

The sediment cores from Lake El’gygytgyn reflect the climate and environmental history of the Arctic with great sensitivity, say Brigham-Grette and colleagues.

The physical, chemical and biological properties of Lake E’s sediments match the known global glacial/interglacial pattern of the ice ages.

Some warm phases are exceptional, however, marked by extraordinarily high biological activity in the lake, well above that of “regular” climate cycles.

To quantify the climate differences, the scientists studied four warm phases in detail: the two youngest, called “normal” interglacials, from 12,000 years and 125,000 years ago; and two older phases, called “super” interglacials, from 400,000 and 1.1 million years ago.

According to climate reconstructions based on pollen found in sediment cores, summer temperatures and annual precipitation during the super interglacials were about 4 to 5 degrees C warmer, and about 12 inches wetter, than during normal interglacials.

I have added a comment to the post:

Given that there is a 400,000 year Milankovitch cycle also (Earth orbital eccentricity period), the super inter glacials at 0.4 and 1.1 m years ago would indicate that this interglacial could be expected to be a super inter glacial also.

This is very important, because it is evidence that we might expect the present interglacial to be an exceptionally warm one.


About Ray Tomes

Ray's career was in computer software development including system software design, economic modeling, investments. He spent 15 years full time on cycles research and has spoken on cycles and related topics at conferences and seminars around the world. He retired at age 42 to study cycles full time and work out “The Formula for the Universe” and as a result developed the Harmonics Theory as an explanation for observed patterns of cycles and structure of the Universe. His current project is the development of CATS (Cycles Analysis & Time Series) software, and collecting and organizing large quantities of time series data and analyzing this data to test and confirm Dewey's findings in an organized way. Interested in all aspects of cycles especially climate change and causes.
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2 Responses to Lake El’gygytgyn Deposits and Long Climate Cycles

  1. Ross Tessien says:

    Greetings. Interesting article on earthquake periodicities. For what it’s worth, my work on a wave model for matter that evolved after “banning” forces of attraction, led to the expectation that what we call mass corresponds to a quantity of what we call “aether” or “medium making up empty space and filling the universe”. The gist is to make this short, exothermic reactions emit space. Thus, any variability in solar fusion rate in the core will impose variations in solar gravitational potential, increasing and decreasing the vibration experienced by the earth as tidal distortions. In other words, the sun is jiggling the earth, while at the same time the plates are building stress. The intensity of jiggling goes up and down with solar cycles, some of which may be tied to earth orbital cycles, but not all. Some are short period with a peak power at 5 minutes. So, I would think that seeking cycles in solar reactivity in the core would prove interesting to earthquake scientists in that periodicities in thermal energy transport through the sun will probably match some earthquake periods.
    Ross Tessien

  2. rod says:

    the lake e team tried using all current climate modeling software to fit their field data into the models, and none of them worked
    their data is a paradigm changer for climate science
    Julie brigham-grette is my current favorite fifty foot tall woman
    take the link
    watch the video
    stand upon the shoulders of giants

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