New England’s future gets dimmers as scientists warn that wipe-out hurricanes might return to region. This type of natural phenomenon was common during the first millennium. The discovery of new sediments deposits in the area of Cape Cod, Massachusetts uncovered that 23 strong hurricanes 250 and 1150 AD, as indicated by a report of the American Geophysical Union. The vast majority of these sea tempests are considered to have been more severe than any others that have been recorded in that area’s known history.
Jeff Donnelly, a researcher at Woods Hole Oceanographic Institution noted that the new findings suggest that what happened at the time was unlike anything the world has seen the last few centuries.
The specialists estimate that these ancient hurricanes were powered by hotter ocean surface temperatures in the Atlantic, phenomenon that has been seen to be rehashing itself nowadays.
Donnelly explained the researchers’ theories:
“We hope this study broadens our sense of what is possible and what we should expect in a warmer climate. We may need to begin planning for a category 3 hurricane landfall every decade or so rather than every 100 or 200 years. The risk may be much greater than we anticipated.”
For the purpose of the research, the analysts examined the dregs deposits from Salt Pond close Falmouth on Cape Cod. Over the recent hundreds of years, huge hurricanes have cleared residue over the sand belt separating the lake from the ocean. The group took out 30-foor-profound residue samples from the lake, which were then reviewed in a research center. From these sediments, the analysts found proof of 32 ancient hurricanes, and in addition severe storms that took place in the years 1635, 1675, and 1991 (Hurricane Bob).
Kerry Emanuel, a professor of atmospheric science at the Massachusetts Institute of Technology also noted that that the recent research provides scientists with a wider view on hurricanes activity throughout time.
The sea residues uncovered there were two periods of increased stormy activity on Cape Cod between the years 150 and 1150, and also somewhere from 1400 to 1675. The specialists think that these times of exceptional hurricane activity is connected with interims of warm ocean surface temperatures happening during the same time periods. The analysts additionally observed that sea temperatures have been gradually climbing in last decades, and the tropical North Atlantic Ocean surface has already gone over the warmth of ancient levels with no indication of halting at any point in the near future.
Detailed information about this research is available in a late release of the diary Earth’s Future.
Image Source: Your Weather