Core sample

core sample

A sample of rock, soil, snow, or ice obtained by driving a hollow tube into the medium and withdrawing it with its contained sample or "core."

In general, the aim of core sampling is to obtain a specimen in its undisturbed natural state for subsequent analysis. The snow sampler is a hydrometeorological example of the type of instrument used to obtain core samples.

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1. In synoptic meteorology, a detailed study of the state of the atmosphere based on observations, usually including a separation of the entity into its component patterns and involving the drawing of families of isopleths for various elements.