Isotopic Composition of Precipitation in the Ten’kinskii District, the Magadan Oblast

摘要

Abstract A review of the isotopic composition of precipitation sampled from October 2020 to January 2022 at four locations in the Magadan oblast at a distance to 300 km from the shore of the Sea of Okhotsk is presented. It is shown that the isotopic composition of precipitation on the coast (the city of Magadan) differs significantly from the inland one in both values and documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$delta^{18}mathrm{O}/delta mathrm{D}$$end{document}?and?documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$delta ^{18}mathrm{O}/T$$end{document}?ratios. The air-mass back-trajectory analysis revealed that these differences are primarily caused by varying roles of different moisture sources forming precipitation.