Assertion: glacier's water | /r/CapableOf | reduce pore space
Facets:
value: progressively
type: MANNER
value: from bottom
type: OTHER
Source sentences:
text: Liquid water from melt and rain percolates through the firn column, and is either held as irreducible water or refreezes, progressively reducing pore space from bottom to top layers until the entire firn column turns into ice (900 kg m−3) and no additional water can be stored.