中文摘要：

我们从水下的 Yangtze 三角洲测量了核心 ZK9 的磁性检验为 Holocene 海水平控制的沉积环境进化使用磁性的代理的机制和可能性。结果证明很磁性的参数的低价值在 c 期间在河口沉积发生了，黄铁矿形成了。10.5-8.4 cal ka BP，当海水平很快升起了时，在 tidaldominated depositional 环境反映占优势的早成岩作用。价值的锋利的增加[ chi ]^潜水艇手臂^( Anhysteresis 残余的 Magnetisation 的危险性)，[ chi ]^潜水艇手臂^/[ chi ]，[ chi ]^潜水艇手臂^ /SIRM (浸透等温的残余 Magnetisation )和 HIRM (努力等温的残余 Magnetisation )从河口在过渡地区上面立即发生了到 c 的三角形的系统。8.4-5.9 cal ka BP，它暗示单个域的磁铁矿和反铁磁性的矿物质的累积。这些磁性自从 c，由于相对稳定的海水平和联系三角洲 progradation 在核心地点显示提高的淡水过程。5.9 cal ka BP。因此，磁性的代理[chi ]^ 潜水艇手臂 ^ 和 HIRM 是有用的识别最大的泛滥表面。另外， c 的 intertidal-subtidal 沉积。13.2-10.5 cal ka BP 有高价值[chi ] ， SIRM 和 HIRM，反映沿海的环境的特征。从 c 的上述参数的锋利的衰落。10.5 cal ka BP 可能显示快速的海水平上升的一个事件[出版摘要]

英文摘要：

We measured the magnetic properties of core ZK9 from the subaqueous Yangtze delta to examine the mechanisms and possibility of using magnetic proxies for the sedimentary environmental evolution controlled by the Holocene sea level. The results showed that low values of most magnetic parameters occurred and pyrite formed in the estuarine sediments during c. 10.5-8.4 cal ka BE reflecting the predominant early diagenesis in a tidaldominated depositional environment when the sea level rose rapidly. Sharp increases in the values of χARM （susceptibility of Anhysteresis Remanent Magnetisation）, χARM/χ, χARM/SIRM （Saturation Isothermal Remnant Magnetisation） and HIRM （Hard Isothermal Remnant Magnetisation） occurred immediately above the transitional zone from estuarine to deltaic system of c. 8.4--5.9 cal ka BP, which imply accumulation of single-domain magnetite and anti-ferromagnetic minerals. These magnetic properties indicate the enhanced freshwater processes at the core site as a result of the relatively stable sea level and the associated delta progradation since c. 5.9 cal ka BP. Therefore, magnetic proxies Of χARM and HIRM are useful to identify the maximum flooding surface. In addition, the intertidal-subtidal sediment of c. 13.2-10.5 cal ka BP had high values of χ, SIRM and HIRM, reflecting the features of a coastal environment. The sharp decline of the above parameters from c. 10.5 cal ka BP indicates possibly an event of rapid sea level rise.