Estimation of the physical release of organic matter from ice using observational data and a coupled ice-water box model

• Main Authors: Nishi,Yoshiki, Tabeta,Shigeru
• Format: Report
• Language: English
• Published: Research Institute for Applied Mechanics, Kyushu University/Graduate School of Frontier Sciences, The University of Tokyo 2006
• Subjects: ice algae; release; box model; production; Saroma; ice core; Polar bioscience; Sea ice
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6235; http://id.nii.ac.jp/1291/00006235/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6235&item_no=1&attribute_id=18&file_no=1

In order to estimate the physical release of organic matter from sea ice and biological production in the ice, we conducted a series of field observations (samplings of water beneath the ice and of an ice core, and deployment of sediment traps) on the ice on Saroma Ko lagoon, Hokkaido, Japan in 2004 and developed a coupled ice-water box model. The observations documented the accumulation of organic matter in the ice. The box model estimates biological production in the ice at 208mgCm^<-2>day^<-1> (Mar. 1-2) and 60mgCm^<-2>day^<-1> (Mar. 2-11), and estimates the fluxes of the physical release at 142mgCm^<-2>day^<-1> (Mar. 1-2) and 68mgCm^<-2>day^<-1> (Mar. 2-11), which account for more than 70% of biological production in the ice. The physical release efficiently transports organic matter from sea ices to water column.