RedFox
10-30-2005, 04:31 AM
What was it like for hurricanes in the Atlantic, Caribbean and the Gulf for hurricanes during the last ice age? What about the Pacific? Wikipedia (http://en.wikipedia.org/wiki/Tropical_cyclone#Formation) specifies those conditions as being conductive to tropical cyclone formation. Would those conditions exist during the ice age?
I guess that extra big Florida and Yucatán peninsulas and the bigger Nicaragua and Honduras area sticking into the sea would make it more likely for hurricanes to make landfall and weaken sooner. Would any Indian or Pacific hurricanes make landfall on the exposed Sunda shelf, which formed a large southeastern Asian peninsula?
I found that evidence of prehistorical hurricanes can be found from ocean sand left in coastal lakes. http://www.sciencenews.org/articles/20000520/bob9.asp
http://www.sciencentral.com/articles/view.php3?article_id=218391171&cat=2_6
They dated the sand and found that there are longer cycles on top of the decades long one for hurricanes and that we've been in a lull of the longer cycles for centuries. The hurricanes that made landfall on the Gulf coast 1000 to 3500 years ago were worse. And maybe that lull may be ending. It may be due to the varying position of the Bermuda high pressure zone that causes an alternation between many hurricanes hitting the Gulf coast and the hurricanes heading up along the Atlantic coast. The varying position of the high pressure zone is known to cause an alternation between the east and central region of America in amounts of precipation.
I also found this page (http://www.auburn.edu/~kingdat/waulsortian/waulsort.html) on Paleozoic mud mounds and how applying hurricane models to the Paleozoic earth had storm tracks not cross the areas where the mud mounds were found, thus not eroding them or preventing their formation.
I guess that extra big Florida and Yucatán peninsulas and the bigger Nicaragua and Honduras area sticking into the sea would make it more likely for hurricanes to make landfall and weaken sooner. Would any Indian or Pacific hurricanes make landfall on the exposed Sunda shelf, which formed a large southeastern Asian peninsula?
I found that evidence of prehistorical hurricanes can be found from ocean sand left in coastal lakes. http://www.sciencenews.org/articles/20000520/bob9.asp
http://www.sciencentral.com/articles/view.php3?article_id=218391171&cat=2_6
They dated the sand and found that there are longer cycles on top of the decades long one for hurricanes and that we've been in a lull of the longer cycles for centuries. The hurricanes that made landfall on the Gulf coast 1000 to 3500 years ago were worse. And maybe that lull may be ending. It may be due to the varying position of the Bermuda high pressure zone that causes an alternation between many hurricanes hitting the Gulf coast and the hurricanes heading up along the Atlantic coast. The varying position of the high pressure zone is known to cause an alternation between the east and central region of America in amounts of precipation.
I also found this page (http://www.auburn.edu/~kingdat/waulsortian/waulsort.html) on Paleozoic mud mounds and how applying hurricane models to the Paleozoic earth had storm tracks not cross the areas where the mud mounds were found, thus not eroding them or preventing their formation.