William Whiston (1667-1752) was an English historian and theologian. In his 1696 book, A New Theory of the Earth, he contended that an encounter with a comet, in 2346 BC, caused the biblical Deluge, which in turn led to the destruction of Atlantis (p.262, 5th edition). His book is now freely available online as a pdf file(a). Both George Dodwell and Mike Baillie have also offered evidence for a globally catastrophic event in 2345 BC.
The ancient Chinese Huai-nan-tzu, recounts a legend of ten suns appearing in the sky, an account which might be related if the suggested(b) date of 2345 BC for the event could be verified.
Reinoud de Jonge offered a paper(c) linking petroglyphs found at Mougau-Bihan in Brittany with a cosmic catastrophe circa 2345 BC. He associated the event with the biblical Deluge.
He had the idea that the antediluvian population had been much greater than the present continents could accommodate and he reasoned that an additional landmass was required to cater for these extra people. Whiston took Plato’s description, of the submerged Atlantis being greater than Libya (North Africa) and Asia combined, at face value and assumed that such a large piece of extra territory would have been adequate to meet the needs of his presumed enlarged world population.
The Deluge is a term often used when referring to the biblical flood of Noah. It might perhaps be more accurate to use the plural, as there is evidence of several large-scale catastrophic inundations within the memory of man. The Noachian deluge has been the subject of continuous debate: was it real or pure fantasy, was it local, regional, or global, and is the Ark to be found on Mt. Ararat.
The most recent controversy concerns a Babylonian tablet which, unlike the biblical record, describes an ark 70 metres in width and round in shape(c)(e). This would have been recorded a thousand years before the Genesis story was written down. Understandably, this has caused the knickers of some fundamentalist Christians to be seriously twisted! The discovery has now been expanded on by Irving Finkel in The Ark before Noah. Another eye-catching theory is that of Thomas J. Krupa (1930- ), author of Biblical Flood: Noah’s Ark and the Star of David, in which he claims that the keel of the Ark was shaped like the Star of David! Equally radical is the result of a high-tech study of fragments of the Dead Sea Scrolls which suggest that Noah’s Ark was pyramidal in shape(j)! Commenting on this report, Jason Colavito has pointed out that the concept of a pyramid-shaped ark is not new(k).
A sceptical 2019 article has looked critically at many aspects of the story of the Ark, including the most commonly offered Turkish site as the resting place of the Ark – “One of the most famous supposedly-Noah’s-ark sites is the admittedly very boat-looking Durupinar site in the Mount Tendurek area in Turkey. According to Atlas Obscura, the site was exposed in the late 1940s after a series of earthquakes and storms.“(t)
A life-sized replica of Noah’s Ark was due to cross the Atlantic Ocean from Holland in the summer of 2016(i). It was built over a four-year period by a carpenter, Johan Huibers, completing it in 2012. It is 410 feet long, 95 feet wide, and 75 feet tall. It weighs 2,500 tons and is said to hold more than 5,000 people at any one time. However, there is no provision for live animals!>The replica was sold to Aad Peters, a Dutch artist, who in 2019 brought it to Ipswich in Britain. Unfortunately, it has been impounded by the authorities there as it lacks the appropriate paperwork to permit it to leave. There are also serious concerns regarding its seaworthiness and is also clocking up port fees of £500 a day(x)(y).<
An interesting overview of traditional as well as modern thinking regarding the possible historical reality behind the Deluge of Genesis is presented(f) by Robert Squillace on the New York University website.
Even more radical is the claim by Hebrew scholar Richard Seary that the Ark never actually existed, but that conventionally accepted understanding of the Genesis text is the result of a number of incorrect translations(d). One example is that there is no such material as gopher-wood and that the word ‘gofer’ means lava!
The Flood of Noah is an echo of the Babylonian Gilgamesh epic, which in turn has a resonance with the deluge story of Manu in Indian mythology. If all three relate to the same event it would be of interest to discover if there was a shared origin.
Many Atlantologists have sought to link the Deluge with the inundation of Atlantis. Egerton Sykes was a keen supporter of the idea. Joseph S. Ellul has interpreted the biblical story to support the idea of a landbridge at Gibraltar that eventually collapsed when the waters of the Atlantic rose after the last Ice Age.
Ellul maintained that Genesis 7:11 ‘All the springs of the Great Deep broke through’ is a reference to the percolation of the Atlantic waters, through the Gibraltar dam, that eventually led to its collapse as the sea level rose or was shattered by seismic or tectonic movements. I find it hard to accept this, because the pressure that is exerted by the Atlantic, would have rapidly changed any such seepage into a major breach and the subsequent collapse of the dam. Gerhard F. Hasel, Professor of Old Testament and Biblical Theology offers a more conventional interpretation of “the fountains of the great deep” in a paper with the same name(h).
Alexander and Edith Tollman link the Noachian Deluge with the consequences of a cometary impact in 7552 BC. On the other hand, G. F. Dodwell the Australian astronomer, after studying ancient gnomons, concluded that it was a worldwide catastrophe in 2345 BC that altered the earth’s tilt, leading to the Deluge. This is comparable with the 1696 claim by William Whiston that the earth had an encounter with a comet in 2346 BC, which caused the Flood of Noah. Emilio Spedicato advocates 3161 BC as the date of the biblical deluge(l). which has also been endorsed by Stuart L. Harris(n).
>Jeffrey Goodman, the controversial author of Psychic Archeology , maintains that “Noah’s Flood was really a tsunami caused by a comet” and supports this contention with a retranslation of Genesis 7:11 (w).<
On a more controversial level, Donald Patten and Samuel Windsor present evidence for a series of close encounters between Mars and the Earth during the 1st millennium BC. David Rohl, the Egyptologist, dates Noah’s Flood at 3114 BC and links it with the climatic consequences of a major catastrophe in the Aleutian Islands.
Ancient flood stories are to be found around the world with a remarkable similarity of detail. It is worth pointing out that none of these legends ever recount the ‘hero’ of their particular tale returning to his former home. One simple explanation for this might be that the original homelands no longer existed. This would not normally be the case if the floods in question were tidal, storm-driven, or even giant tsunamis. However, if the inundations were the result of rising sea levels, resulting from the melting of Ice Age glaciers, we could expect two principal effects. The first would have been the gradual submergence of all low-lying flood plains that are now identified as continental shelves. Two of the best known of these would be the Sunda Shelf (Sundaland) and the area stretching from the west coast of mainland Europe across the North Sea encompassing the British Isles and into the Atlantic beyond Ireland. The second effect would have been the dramatic inundation of valleys and basins protected by low land bridges or dams. Again, we have examples, some debatable, such as, the Baltic, the Red Sea, the Persian Gulf, the Black Sea, the Mediterranean and perhaps the Caribbean, the Gulf of Mexico, and the Sea of Japan.
When Ryan & Pitman(r) published their 1997 theory that around 5600 BC, the Black Sea had been flooded by water from the Aegean breaching the Bosporus, it did not take long before it was speculated that the event was reflected in the story of Noah’s Deluge. With little delay, strong objections to the idea were raised by many others(s). Perhaps relevant to the subject is the claim that the flow of water was instead from the Black Sea into the Aegean, a view expressed by Nick Thom in The Black Sea Flood .
It is very interesting that so many of the deluge stories include a scenario where the ’hero’ is warned beforehand of the impending doom. To me, this would make sense that where a land bridge was threatened by gradually rising waters on one side, simple observation would have provided adequate time to warn those at risk on the other side.
The flooding of all these worldwide locations would have occurred quite slowly over an extended period following the last Ice Age, possibly providing the basis for the widespread existence of these flood myths.
Nevertheless, there is one rather disturbing element to be found alongside some of the flood myths, namely that the deluge event was concurrent with the sun seemingly standing still, and in some cases, it is recorded that the Moon also appeared to stop(o)(p)! One explanation on offer is that it is a reference to an eclipse(q). This might be acceptable if it was compatible with other myths from different parts of the world, which does not appear to be the case. Furthermore, it does not explain the association of the stopping of the sun with the global deluge. A very close encounter between the Earth and another large celestial body might.
Nick Thom, an Engineering lecturer at Nottingham University, has written The Great Flood  which gives an overview of Flood myths but more importantly identifies the emptying of glacial Lake Agassiz around 6250 BC as the mechanism which caused a tilting of the Earth, which in turn generated a global deluge remembered by the survivors in myth and later recorded in scriptures.
A website with a huge collection of worldwide flood myths is available online(b). However, one omission from all such collections is a contribution from Egypt who inexplicably has no such tradition, apart from the predictable annual flooding of the Nile. However, there is the Egyptian story of Hathor/Sekhmet(u)(v) who flooded the land with blood, which some may interpret as a mythological code for water!
Greek mythology includes reference to three major floods affecting Greece, those of Ogyges, Deucalion, and Dardanus(o). Plato’s story of Atlantis makes mention of a number of major floods during the ‘9,000’ years following the war with Atlantis, one of these being the flood of Deucalion. However, it may be worth mentioning that with so many ancient cultures having recorded flood myths, Egypt is notable for having none!
Stephen Oppenheimer mentions three sudden ice-melts, 14,000, 11,500, and 8,000 years ago that would have had a global effect. It should be noted that the earliest date is close to the apparent date given by Plato for the destruction of Atlantis.
As I see it, we are left with two explanations for the global flood myths, either a close encounter with an extraterrestrial body that created a mega-tsunami that was on such a scale that it swept around the globe, perhaps a number of times before dissipating, or the melting of the Ice Age glaciers produced the cyclical bursting of ice-dams and landbridges and the inundation of vast areas of low-lying land. I’m inclined to believe that the balance of probabilities favours the latter explanation, although I find it difficult to accept that gradual deglaciation would have generated floods that ‘covered mountains’ (Gen. vii.19)!
Kirk Kirchev in a recent (April 2018) two-part article(m) “offers a unifying scientific hypothesis that connects diverse ancient flood myths with mainstream scientific fact.”
T. R. Holme has an interesting article(g) on the flooding of the Black Sea and the migration from the region that resulted. He also links that event with the work of the late Marija Gimbutas (1921-1994).
(d) Fortean Times, April 2014, p.55
In a book concerning the history of the Peruvians he expressed his belief that a close encounter with a comet altered the orbit of the earth, lengthened the year and was responsible for the Deluge. A consequence of this catastrophic fly-by was also the destruction of Atlantis, which he located in the Atlantic, leaving the Azores and Canaries as its remnants today.
His idea of a cometary interference with the earth is an extension of the theories of William Whiston (1667-1752), the Anglican priest who sought to reconcile science and religion. The French astronomer, Jérôme Lalande, developed Carli’s cometary ideas further.
Mike Baillie is Emeritus Professor of Palaeoecology in the School of Archaeology and Palaeoecology, Queen’s University, Belfast. He is a dendrochronologist of world renown, who outlined in his recent book  the evidence for catastrophic encounters with asteroids or comets over the past five millennia that opened a whole new chapter in the search for the truth about our past. Baillie ascribes these events to 2354-2345 BC, 1628-1623 BC, 1159-1141 BC, 208-204 BC and 536-545 AD. He touches on a number of legendary and historical events such as the Deluge, the Exodus and King Arthur, but seems to studiously avoid any direct reference to Atlantis. Nevertheless, his theory in conjunction with the suggestions of writers such as Emilio Spedicato enhances the possibility of the destruction of Atlantis being a consequence of a more widespread catastrophe.
In 2004 it was revealed that a very large comet or asteroid, estimated to be ¾ of a mile in diameter, crashed into what is now Germany. The date is calculated at 200 BC, which coincides with one of Baillie’s dated catastrophes. A crater field stretching from the town of Altoetting to Lake Chiemsee is all that remains today.
Perhaps even more relevant to our study was a PowerPoint presentation(b) from Baillie to a Quantavolution Conference in Athens in 2011, which offered compelling evidence for a catastrophic event in 2345 BC. His data reinforces the work of George Dodwell who demonstrated with his study of ancient gnomons, decades earlier, that something dramatic happened to the rotational axis of the Earth in 2345 BC, which is possibly the same 2346 BC encounter with a comet proposed by William Whiston in 1696. At the same conference Baillie also presented evidence for dating the eruption of Thera to 1628 BC.
Baillie is also co-author with Patrick McCafferty of a fascinating work that reinterprets some of the heroes and gods of Celtic mythology as a coded account of our ancestors’ observation of a close encounter or impact of comets with the Earth. However, Baillie’s books should be read in conjunction with an equally compelling volume(a) by David Talbot and Wallace Thornhill who offer a complementary but rather than conflicting interpretation of early man’s perception of highly visible cosmic events. Talbot and Thornhill have linked ancient myths and thousands of petroglyphs with their view of an electric universe, where large-scale plasma phenomena were witnessed and recorded by preliterate man. Their book has drawn extensively on the work of Dr. Anthony Peratt, who has gathered and classified an enormous database of petroglyphs from all over the world(d) that are apparently a record of celestial demonstration(s) of plasma physics.
(c) https://www.cais-soas.com/CAIS/Religions/non-iranian/Judaism/Persian_Judaism/book6/pt1.htm (half way down page)