Assertion: glacier's rate | /r/HasProperty | established by osterkamp
Facets:
value: to be two centuries
type: TEMPORAL
value: to be less
type: MANNER
Source sentences:
text: The potential rates of permafrost thawing have been established by Osterkamp (1984) to be two centuries or less for 25-meter-thick permafrost in the discontinuous zone of interior Alaska, assuming warming from −0.4 to 0 °C in 3–4 years, followed by a further 2.6 °C rise.