Assertion: sediment | /r/HasProperty | source
Facets:
value: periodically
type: TEMPORAL
Source sentences:
text: (Figure 4a) is a source in all seasons, on average, while station RGPT (Figure 4b) transitions from a source to a DOC sink in the late summer, and station PNPT (Figure 4c) is generally a sink in the summer, although there are small‐scale fluctuations when the sediment is periodically a source.