http://www.pangaea.de/about/ PANGAEA - Publishing Network for Geoscientific & Environmental Data is an Open Access library aimed at archiving, publishing and distributing georeferenced data from earth system research.
Data can be found by using the PANGAEA search engine or through links on web pages. Most of the data are freely available and can be used by referencing the related publication or the dataset citation. Some data sets from ongoing projects are under moratorium and access may be restricted. The data description (metadata) of all data sets are visible and include the principle investigators (PI) name and email for contact.
PANGAEA is hosted by Alfred Wegener Institute for Polar and Marine Research and the Center for Marine Environmental Sciences in Germany.