Tools for Aquatic Sciences Datasets, constants, conversion factors, utilities for MArine, Riverine, Estuarine, LAcustrine and Coastal science. The package contains among others: (1) chemical and physical constants and datasets, e.g. atomic weights, gas constants, the earths bathymetry; (2) conversion factors (e.g. gram to mol to liter, barometric units, temperature, salinity); (3) physical functions, e.g. to estimate concentrations of conservative substances, gas transfer and diffusion coefficients, the Coriolis force and gravity; (4) thermophysical properties of the seawater, as from the UNESCO polynomial or from the more recent derivation based on a Gibbs function. Software Depends: R (>= 2.10), shape, seacarb Karline Soetaert <karline.soetaert@nioz.nl> Karline Soetaert <karline.soetaert@nioz.nl>, Thomas Petzoldt <thomas.petzoldt@tu-dresden.de>, Filip Meysman <filip.meysman@nioz.nl> GPL (>= 2) 2012-01-29 application/tgz http://CRAN.R-project.org/package=marelac