Sea-ice monitoring by ship-based visual observation during JARE ―Simplification of observation method based on the ASPeCt protocol―

• Main Authors: Kay I. Ohshima, Shuki Ushio, Akihisa S. Otsuki
• Format: Article in Journal/Newspaper
• Language: English; Japanese
• Published: National Institute of Polar Research 2006
• Subjects: Geography (General); G1-922; Antarctic; Antarc*; Sea ice
• Online Access: https://doi.org/10.15094/00009378; https://doaj.org/article/32725386159d4fed8ee7c2f3599c0bcc

A protocol for ship-based visual observation of sea ice is proposed for the Japanese Antarctic Research Expedition (JARE). The protocol is a simplified version of the ASPeCt protocol, used for extracting quantitative information on sea ice. The ship-based visual observations started from JARE-46. In the pack ice region, ice thickness, ratio of deformed ice, and total ice volume increased toward the coast. Continuous monitoring of sea ice, particularly its thickness, by ship-based observation is effective for obtaining information on climatology and interannual variation of sea ice in the coastal pack ice region.