SPASE - Ontology
Space Physics Archive Search and Extract (SPASE) Consortium
SPASE Schema (overview | details ) from Aaron Roberts.
A high-level view of the SPASE schema generated using XMLSpy.

SPASE Ontology by Steve Hughes.
A "complete" ontology of the SPASE data model using Protege.
This is based on version 1.0.0 of the data model.
The Protoge project files are available in a zip package.

OWL SPASE Ontology by Tom Narock.
An OWL ontology of the SPASE data model based on
version 1.1.0 of the data model.