Periglacical and Periglaciation subclass of process

[charlesvardeman]

Hi All, In our cryohackathon series aligning ENVO and SWEET, we noted that SWEET had created Periglacial as a subclass of GlacialProcess and Periglaciation as a subclass of Glaciation. There could also be issues with given the equivalentClass to Glacial. This needs to be discussed further.

https://github.com/ESIPFed/sweet/blob/eb8106314e4df9aae9042b792cfff749290bf8f3/src/phenCryo.ttl#L76-L87

Envo cross reference xref: EnvironmentOntology/envo#810