title: A 6.5-year continuous record of sea surface salinity and seawater isotopic composition at Harbour of Ishigaki Island, southwest Japan.
abstract: We produced continuous records of sea surface salinity and isotopic composition from 1998 to 2004 at Ishigaki Island, southwest Japan, and found clear seasonal variations in salinity and oxygen isotopic composition and increasing trends of them after 1999. These increasing trends could be principally due to the decreasing difference between local precipitation (P) and evaporation (E), as a result of the reduction of horizontal vapour transport from adjacent oceans. When samples collected in heavy rainfall events were excluded, the average Deltadelta(18)O/Delta salinity slope was obtained as 0.31, 0.35 in summer and 0.28 in winter. Estimated E/P ratios based on the isotopic box model are in good agreement with the ratios of independently estimated E to observed P.
authors.affiliation: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan. osamu.abe@nagoya-u.jp
authors.forename: Osamu
authors.initials: O
authors.lastname: Abe
authors.forename: Seizen
authors.initials: S
authors.lastname: Agata
authors.forename: Maki
authors.initials: M
authors.lastname: Morimoto
authors.forename: Manabu
authors.initials: M
authors.lastname: Abe
authors.forename: Kei
authors.initials: K
authors.lastname: Yoshimura
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Hiyama
authors.forename: Naohiro
authors.initials: N
authors.lastname: Yoshida
mesh_terms: D003903:Deuterium / Q000032:analysis*; D007564:Japan; D010103:Oxygen Isotopes / Q000032:analysis*; D011891:Rain; D054712:Salinity; D012621:Seasons; D012623:Seawater / Q000032:analysis*; D013696:Temperature
chemical_list: D010103:Oxygen Isotopes; D003903:Deuterium