%0 Journal Article
%T The characteristics of the environmental magnetism in sediment from the river mouths of the Changjiang River and the Huanghe River and their comparison study<br>长江与黄河河口沉积物环境磁学特征及其对比研究
%A NIU Jun-li
%A LI Yun-hai
%A NIU Jun-li
%A YANG Zuo-sheng
%A LI Yun-hai
%A QIAO Shu-qing
%A <br>牛军利
%A 杨作升
%A 李云海
%A 乔淑卿
%J 海洋科学
%D 2008
%I 
%X Based on the environmental magnetism measurements on the sediment samples from the Changjiang River and the Huanghe River mouths,the basic characteristics of the environmental magnetism for the sediment from the Changjiang River mouth and the Huanghe River mouth are analyzed respectively and compared with each other.The results indicated that ferrimagnetic minerals are the main magnetism carriers for both the Changjiang River and the Huanghe River sediment.Additionally the ferrimagnetic minerals are mostly composed of psudo-single domain and multi-domain grains together with a little superparamagnetic grain.The magnetic intensity in the sediment from the Changjiang River mouth is obviously higher than that from the Huanghe River mouth,especially in terms of magnetic susceptibility,anhysteretic remanent magnetization and saturation isothermal remanent magnetization.For the samples from the Changjiang River mouth there is no significant discrepancy of susceptibility detected between the coarser-grain part and the total samples,while it is high up to 34% for the samples from the Huanghe River mouth,indicating that such difference of susceptibility between the samples from the two river mouths is derived from the dissimilar existence of the minerals;The difference in the environmental magnetism between the sediment samples from the two river mouths is corresponding with the different distribution patterns of grain size.The different environmental magnetism characteristics of the sediments reflect the different source rocks and the climate for the sediment generation.Therefore the parameters of the environmental magnetism can be regard as an effective tracer for identifying the sediment provenances of the Changjiang River and the Huanghe River.
%K the Changjiang River and the Huanghe River
%K sediment in the river mouth
%K the characteristic of environmental magnetism
%K comparison study
%K provenance identification<br>长江与黄河
%K 河口沉积物
%K 环境磁学特征
%K 对比研究
%K 物源示踪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=DFE7B94EB76B8F26135C9890832CEF6A&aid=394E53ECA22F8019377BE8BA6878130C&yid=67289AFF6305E306&vid=9971A5E270697F23&iid=E158A972A605785F&sid=B91E8C6D6FE990DB&eid=340AC2BF8E7AB4FD&journal_id=1000-3096&journal_name=海洋科学&referenced_num=0&reference_num=36