Bulletin of Glaciological Research
Online ISSN : 1884-8044
Print ISSN : 1345-3807
ISSN-L : 1345-3807
Saroma-ko Lagoon Observations for sea ice Physico-chemistry and Ecosystems 2019 (SLOPE2019)(サロマ湖における海氷の物理・化学・生物学研究)
Daiki NOMURA(野村大樹)Pat WONGPANTakenobu TOYOTA(豊田威信)Tomonori TANIKAWA(谷川朋範)Yusuke KAWAGUCHI(川口悠介)Takashi ONO(小野貴司)Tomomi ISHINO(石野朋実)Manami TOZAWA(戸澤愛美)Tetsuya P. TAMURA(田村哲也)Itsuka S. YABE(矢部いつか)Eun Yae SONFrederic VIVIERAntonio LOURENCOMarion LEBRUNYuichi NOSAKA(野坂裕一)Toru HIRAWAKE(平譯享)Atsushi OOKI(大木淳之)Shigeru AOKI(青木茂)Brent ELSEFrancois FRIPIATJun INOUE(猪上淳)Martin VANCOPPENOLLE
ジャーナル フリー

2020 年 38 巻 p. 1-12


Saroma-ko Lagoon, located on the Okhotsk Sea coast of Hokkaido, is seasonally covered by flat, homogeneous, easily accessible and safe sea ice. As such, it proves a very useful experimental site for the study of sea ice processes, the inter-comparison of methods, the testing of equipment, and the training of researchers new to the Polar regions. In this contribution, we describe a physical, chemical, and ecosystem survey at Saroma-ko Lagoon, conducted over February 23-28, 2019 under the auspices of the SLOPE2019 (Saroma-ko Lagoon Observations for sea ice Physico-chemistry and Ecosystems 2019) program. Sea ice cores were collected to examine temperature, salinity, oxygen isotopic ratio, thin sections, and chemical and biological parameters such as carbonate chemistry, CH4, nutrients, chlorophyll a concentrations, and ice algae community assemblage. Broadband and spectral irradiance measurements were carried out above/under the sea ice, and different sensors were inter-compared at close positions and environments. Equipment such as spectrometers, air-sea ice CO2/CH4 flux chamber, and under-ice turbulent heat flux systems were tested for future Arctic and Antarctic expeditions. Finally, an artificial pool was dug into the sea ice to understand the effect of snow particles on ice growth and to compare the gas exchange process over sea ice with an ice-free water surface. Our SLOPE2019 field campaign activities provided useful information for inter-comparison work and future sea ice research in the polar oceans.

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