tag:blogger.com,1999:blog-4142988674703954802.post6490799991358402518..comments2024-03-11T04:54:26.827-07:00Comments on THE HOCKEY SCHTICK: New paper finds sea levels rose naturally to 29 feet higher than the present during last interglacialUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4142988674703954802.post-75942725671078458042013-09-03T16:09:59.074-07:002013-09-03T16:09:59.074-07:00http://judithcurry.com/2013/08/30/ice-sheet-collap...http://judithcurry.com/2013/08/30/ice-sheet-collapse/MShttps://www.blogger.com/profile/06714540297202434542noreply@blogger.comtag:blogger.com,1999:blog-4142988674703954802.post-72394321227062710862013-08-11T00:08:24.878-07:002013-08-11T00:08:24.878-07:00I investigated this subject for my M.S. degree in ...I investigated this subject for my M.S. degree in Earth science (Emporia State University Kansas, 2005).<br /><br />www.geoscience-environment.com<br /><br />On the east coast of Penang Island off Malaysia, I found a wide terrace at about 12 meters, which I presumed was wave-cut during an previous interglacial. <br /><br />(Penang Island is separated from Sumatra by the Strait of Malacca which is less than 120 meters deep. The island is entirely granite lacking sedimentary platforms. I found another terrace at 2 meters, which marked the Holocene Climate Optimum about 5000 years before the present when sea level was about 2 meters (6 feet) higher than now. There are higher terraces from earlier interglacials. The west coast has less pronounced terraces probably eroded because the prevailing winds are from the west.) <br /><br />Penang island is rising at about 2 meters per 100,000 years. That means the wave-cut terrace at 12 meters would have been 10 meters above sea level if the land had not risen. That indicates sea-level was 10 meters above the present 100,000 years ago, during the Eemian inter-glacial MIS3.<br /><br />Ten meters is about 33 feet. Given that my only tools were a map, a satellite image and a GPS unit with altimeter, an error of 4 feet on my part seems right for experimental error.<br /><br />I find the research reported by O'Leary and others to be convincing. In 2006 Overpeck and others reported sea level as high as 20 feet (6 meters) but the results of O'Leary's team is closer to what I found in my own field work.Anonymoushttps://www.blogger.com/profile/16134025558146120866noreply@blogger.com