According to the climate change alarmists at NASA, sea levels are rising at 3.4mm per year. At that rate a foot increase will take nearly 100 years, not 13.
climate.nasa.gov/vital-signs/sea-level/
Something that has long intrigued me is this.
Sea levels are a relative thing. They’re affected by ice accumulation on land. They’re affected by subsidence of land. They’re affected by the never-ending erosion of land and its flow into the sea. They’re affected by upwellings and subsidences in the sea floor. They’re even affected by the amount of water in the atmosphere and on the land at any given point in time.
I recall reading, just as a perhaps interesting aside, that the whole of the Great Plains was created by wind and water erosion of a mountain chain, now gone, that was bigger than the Rockies, which is why, in driving from, say, St. Louis to Denver, it’s uphill all the way.
The part of the country in which I live was quite obviously on the bottom of a sea and perhaps a number of times. Sometimes it was shallow, the precipitates of which tended to form the chert layers. Sometimes it was deep, the precipitates of which tended to form the limestone layers. Here and there one may find a sandstone layer suggesting perhaps desert land. And then there are the more recent layers of clay rich with iron that came from…what? In some places there are the minerals infiltrated by hot water of unbelievably ancient volcanic origin into even more ancient limestone; lead, zinc, silver, quartz.
Maybe sea levels are really rising in Florida and perhaps removal of underground water is simply causing subsidence. Maybe they’re rising because of ice melt from glaciers sitting on land. Maybe they’re rising because land is rising when it’s relieved of ice pressure or gasification of magma; rising we can’t see because it’s offshore.
I really don’t think we know all the things that cause changes in the earth or in the oceans upon the earth.