Interval A discrete segment along a longer path in which an observation or specimen is collected over the distance between the upper and lower bounds of the interval. A Depth Interval is a sub-type of Interval. SamplingCurve OGC Observations & Measurements Term retrived from OGC Observations & Measurements (e.g., see https://www.seegrid.csiro.au/wiki/AppSchemas/ObservationsAndSampling#Sampling_model) SamplingFeatureType ODM2 Working Group A vocabulary for describing the type of SamplingFeature. Many different SamplingFeature types can be represented in ODM2. SamplingFeatures of type Site and Specimen will be the most common, but many different types of varying levels of complexity can be used.