Preliminary firn-densification model with 38-site dataset

Spencer, M. K.; Alley, Richard B.; Creyts, Timothy T.

Firn-densification modeling based on hot isostatic pressing with power-law creep is investigated using depth-density data from 38 sites that collectively have mean annual temperatures ranging from 216 to 256 K and accumulation rates ranging from 0.022 to 1.2 m w. e. a-1. We use an inverse technique to obtain free parameters in a simple physical model for different stages of time-dependent firn densification. Our model works as well as or slightly better than previous models interpolating within the data range, but extrapolating would require additional physics.


Also Published In

Journal of Glaciology

More About This Work

Academic Units
Lamont-Doherty Earth Observatory
Marine Geology and Geophysics
Published Here
June 9, 2014