Dear colleagues: Attached you will find the fourth issue of the Bulletin Oceanographic. It is a contribution of the Department of Geophysics and the Millennium Institute of Oceanography , University of Concepción.

http://res.cloudinary.com/imo/image/upload/v1454971713/Bolet%C3%ADn%20Oceanografico%20N%C2%B04.pdf

Invites all institutions and researchers who wish to cooperate with relevant information on the development of oceanographic and meteorological anomalies on our shores, send your contribution to:

boc@dgeo.udec.cl .

Sincerely,

Aldo Montecinos , Oscar Pizarro and Carlos Conejero