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Showing posts with label sea level. Show all posts
Showing posts with label sea level. Show all posts

Saturday, 23 July 2011

Beautiful maps in current affairs

At presentation in London on the UN Convention on the Law of the Sea was given a few years ago by Dr Parson of the Southampton UK National Oceanographic Centre. He described how nations were given an opportunity to claim Exclusive Economic Zones (EEZ) beyond the standard 200 nautical mile limit (viz. UNCLOS and UNEP). The reason AAPG hosted this is because most such extensions revolve around petroleum and mineral rights in the Offshore Continetal Shelves (OCS).

Saturday, 13 March 2010

Another take on climate change

[ 2021 update: full twitter thread why "plume push" theory may be flawed
  2010 update: See follow-on Part II here ]

If the 8.8 magnitude Chilean quake may have shortened days by an infenitisimal amount late last month, it highlights the lesser-know fact that the earth wobbles on it axis, and that mass plate-tectonic movements are the result as well as the cause of earth tremors along plate boundaries below (may need to install Google Earth plug-in as indicated).

Wednesday, 30 December 2009

Webmaps, history, climate and geology

Chatting with local history buffs brought up amazing facts about climate change and sea level rise since the Middle Ages in East Anglia. One book's sketch map relates how the North Sea coastline differed from today, and how that affected Anglo-Saxon socio-economics there before and after the Norman conquest and the Domesday book.