Premium
Controls on 231 Pa and 230 Th in the Arctic Ocean
Author(s) -
Luo Yiming,
Lippold Jörg
Publication year - 2015
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2015gl064671
Subject(s) - arctic , sedimentary rock , geology , structural basin , canada basin , oceanography , scavenging , glacial period , the arctic , water column , sedimentary basin , paleontology , chemistry , biochemistry , antioxidant
The distributions of 230 Th and 231 Pa in the Arctic Ocean are not well understood. In order to examine the Arctic 231 Pa/ 230 Th system and therefore to shed light on the future use of Arctic sedimentary 231 Pa/ 230 Th, we developed a 2‐D scavenging model modified from an Atlantic model. Tuned with reasonable parameters that are consistent with Eurasian Basin geographic settings, the model can reproduce most of the features of the 230 Th and 231 Pa water column profiles as well as the sedimentary 231 Pa/ 230 Th distribution patterns and suggests that the sedimentary 231 Pa/ 230 Th in the Eurasian Basin is mainly controlled by the deep water circulation. In our attempt to reproduce the sedimentary 231 Pa/ 230 Th patterns during the last glacial, we found that circulation strength in the Eurasian Basin at shallower depths may have been stronger than today.