next message in archive
next message in thread
previous message in archive
previous message in thread
Index of Subjects
Index of Subjects Steve, http://pubs.usgs.gov/gip/continents/map.jpg shows NS covered by ice during the recent ice age and Baltimore exposed. I wonder how thick the ice was here. I recall reading it was over 6 000 feet deep in New Hampshire. Gerald Steve Shaw wrote: > For detailed discussion of land sinking/rising, and of determining > actual mean sea level (MSL) changes over time as a result of > measurements that largely originate from multiple tide gauges, try this > (1995) review: > > http://www.agu.org/revgeophys/dougla01/node3.html > > According to this site, local sea level is rising rapidly by 3.5 mm > per year near Baltimore because the local land is sinking. Because of a > sort of amplification effect explained in the article, a change of 1 mm > can result in devastating effects 50-200 times larger, as has happened > in nearby Chesapeake Bay. Oppositely, local sea level is falling > rapidly by 4 mm per year at Stockholm because of continuing post-glacial > rebound (the land is rising after a heavy ice-age load). Nothing is > mentioned in the article on the situation further north from Baltimore > in NS, but presumably NS is more like Sweden. > The more reliable tide gauge data are said to indicate a rise of 1.8 > mm per year in MSL, averaged worldwide. At least in 1995, this guy > seemed to think this rate of rise was not obviously accelerating, but I > suspect that this conclusion may be out of date. >
next message in archive
next message in thread
previous message in archive
previous message in thread
Index of Subjects