Sources and degradation of organic matter in the surface sediments of the Chukchi Sea: insights from amino acids - Weiwei Li; Zhongqiao Li; Zhuoyi Zhu; Alexander Polukhin; Youcheng Bai; Yang Zhang; Futao Fang; Haiyan Jin; Anatolii S. Astakhov; Xuefa Shi; Jianfang Chen (Acta Oceanologica Sinica, 2023)