The characteristics of oxygen isotope compositions and distributions of the seawaters inthe Huanghai(Yellow) Sea and the Bohai Sea have been investigated based on δ^(18)O data meas-ured for 608 water samples. By usin...The characteristics of oxygen isotope compositions and distributions of the seawaters inthe Huanghai(Yellow) Sea and the Bohai Sea have been investigated based on δ^(18)O data meas-ured for 608 water samples. By using the property of tracing atoms, the mixing and theinfluencing range of the diluted freshwater of the Huanghe (Yellow) River and the exhibitionof δ^(18)O values in the movements of the Huanghai Sea warm current and its residual flowshave been discussed. Particularly, the regional, vertical, seasonal and tidal changes of the δ^(18)Ovalues of the waters influenced by the Huanghe River have also been studied. A beneficialexploration was thus made for the application of stable isotope to the physical oceanography.展开更多
The surface layer of Ni<sub>68</sub>P<sub>18</sub>Cr<sub>14</sub> amorphous alloy was studied by AES and XPS associated with ion beam sputtering. It was found that great differences...The surface layer of Ni<sub>68</sub>P<sub>18</sub>Cr<sub>14</sub> amorphous alloy was studied by AES and XPS associated with ion beam sputtering. It was found that great differences existed between the surface layer and the bulk both in composition and chemical states. The dominant component elements Ni and P were of lower content in the surface laver, while Cr was enriched. Cr was drastically oxidized in the surface layer, but Ni underwent no oxidation. There was a P enriched region just helow the surface oxide layer, which was supposed to enhance the surface segregation of Cr. Ni underwent no oxidation in Ni<sub>68</sub>P<sub>18</sub>Cr<sub>14</sub> amorphous alloy.展开更多
To study the compositions of stable isotopes and trace elements in ostracode shells is animportant way to reconstruct lacustrine paleoenvironment. In these studies, the "white sys-tem"method, a common way us...To study the compositions of stable isotopes and trace elements in ostracode shells is animportant way to reconstruct lacustrine paleoenvironment. In these studies, the "white sys-tem"method, a common way used in most research work, has its own limitations. First,the relations between the compositions and environmental factors are reduced from limitedexperiments on limited kinds of ostracode shells. So there are still different opinions onthis subject which needs to be identified through more experiments in future studies. Sec-ond, in contrast to the simple close system, most open or semi-open paleobasins are展开更多
基金Science Foundation of State Oceanic Administration.
文摘The characteristics of oxygen isotope compositions and distributions of the seawaters inthe Huanghai(Yellow) Sea and the Bohai Sea have been investigated based on δ^(18)O data meas-ured for 608 water samples. By using the property of tracing atoms, the mixing and theinfluencing range of the diluted freshwater of the Huanghe (Yellow) River and the exhibitionof δ^(18)O values in the movements of the Huanghai Sea warm current and its residual flowshave been discussed. Particularly, the regional, vertical, seasonal and tidal changes of the δ^(18)Ovalues of the waters influenced by the Huanghe River have also been studied. A beneficialexploration was thus made for the application of stable isotope to the physical oceanography.
文摘The surface layer of Ni<sub>68</sub>P<sub>18</sub>Cr<sub>14</sub> amorphous alloy was studied by AES and XPS associated with ion beam sputtering. It was found that great differences existed between the surface layer and the bulk both in composition and chemical states. The dominant component elements Ni and P were of lower content in the surface laver, while Cr was enriched. Cr was drastically oxidized in the surface layer, but Ni underwent no oxidation. There was a P enriched region just helow the surface oxide layer, which was supposed to enhance the surface segregation of Cr. Ni underwent no oxidation in Ni<sub>68</sub>P<sub>18</sub>Cr<sub>14</sub> amorphous alloy.
基金Study supported by International Geological Contrast Plan (IGCP) Project 296.
文摘To study the compositions of stable isotopes and trace elements in ostracode shells is animportant way to reconstruct lacustrine paleoenvironment. In these studies, the "white sys-tem"method, a common way used in most research work, has its own limitations. First,the relations between the compositions and environmental factors are reduced from limitedexperiments on limited kinds of ostracode shells. So there are still different opinions onthis subject which needs to be identified through more experiments in future studies. Sec-ond, in contrast to the simple close system, most open or semi-open paleobasins are
