This is an “unprecedented rise” in the level of the central Indian Ocean, a very worrying rise identified by scientist Paul Kench of Simon Fraser University. The researcher, who published a study on Nature Geoscience, reveals, in a press release published on the website of the same Canadian university, that sea levels in the central Indian Ocean have increased by about one meter over the last two centuries.
The researcher came to this disconcerting conclusion by analyzing certain types of fossil corals which can be considered “recorders of past sea levels”, the researcher reports. By measuring in particular the age and depth at which these fossils are found, it is possible to identify the various periods when the sea level may have been lower or higher and this for hundreds of years.
In particular, the researcher found that the sea level in this area was much lower in the past than ever calculated. The researcher identified in particular two periods during which the sea level off the Maldives was among the lowest, namely between 234 and 605 AD and 1481 and 1807.
According to the researcher, these reductions in sea level were due to reductions in the temperature of the sea surface itself associated with the late ice age of antiquity and the small ice age. Moreover, the data he acquired confirm, as reported in the abstract of the study, also the acceleration of sea level rise in the last two centuries at unprecedented rates.
Naturally, such news is a source of concern not only for marine eco-environments, in particular coral reefs, but also for all cities and coastal communities in general in the area, not a few considering, for example, regions such as those of southern India, Sri Lanka and the African coast.