An Improved Code to Classify the Location of Marine and Terrestrial Data

Sweers, H.E.

Limnology and Oceanography 15(5): 827-832


ISSN/ISBN: 0024-3590
DOI: 10.4319/lo.1970.15.5.0827
Accession: 068500733

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A geographically sequenced file is often coded with a Marsden square number. The Marsden keys, however, are unnecessarily complicated and inefficient when used in a global data bank. An alternate way of numbering the 10° and 1° squares, called the Coted system, has been designed. Its main advantages are 1) a clear relationship between the sampling position expressed in latitude and longitude and the Coted key and 2) the possibility of writing a more efficient geographical retrieval for data in an area of an almost arbitrary shape.