Climate change, along with the associated ice-shelf melting, contributes to sea level rise. However, the calculations linking the temperature records with ice melt leave an unexplained 12 cm/century rise in the actual levels - as measured around the world by tide gauges (and recently by satellite radar). Put another way, the levels are rising 3 to 4 times faster than can currently be explained.
This anomaly, called the Attribution Problem by geo-scientists, has been the subject of intense debate. There are various theories revolving around the general observation that : βeither the tide gauge estimates are too high, as has been suggested recently, or one (or both) of the mass and volume estimates is too low.β
A new theory (2015) suggests the idea that the anomalies may be caused by changes in the size of the Earth itself.
Major effects on sea-level could come from ongoing relaxation of curvature variations that are peculiar for an expanding globe.β
Source :Sea Level Enigmatic Rising : New Perspectives from an Expanding Globe
Further reading : The Puzzle of Global Sea-Level Rise in Physics Today, Volume 55, Issue 3.
Ideas for new topics, and suggested additions / corrections for older ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)
You are currently viewing an auto-translated version of Wikenigma
Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.
Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.