渤海湾西侧泥质海岸带全新世岸线的变化与海洋的影响(英文)

Holocene shoreline changes and marine impacts on the muddy coast, western Bohai Bay, China

以渤海湾泥质海岸带为例,从形态和地层证据2个方面总结了全新世岸线变化与海洋作用对该地区海岸带发育的影响。中全新世以来千年级别的岸线变迁至少以6次停顿(形成贝壳堤和泥质岭地)和岸进的交替为特征。过去130年间10年级别的岸线变化分为4个阶段,显示了"小冰期"结束后随气温上升而发生的岸线自然蚀退是如何逐渐被人类活动(特别是2000年以来的围海造陆)所取代的。全新世海相沉积中发现的9个峰值期和晚全新世的7次风暴驱动事件,表明了研究区泥质海岸带增强的海洋影响。这些结果提供了一条经由地质背景认识现代泥质海岸带过程的途径。

Taking the muddy coast of Bohai Bay as an example, this paper summarizes the Holocene shoreline migrations and marine impacts from morphological and stratigraphical evidence onto the local coastal evolution. The shoreline migrations of the millennial scale since the middle Holocene were characterized by at least six times of alternation between standstills （forming shelly cheniers and earthy mounds） and progradations. The decadal changes for the last 130 years are separated into 4 phases, which reveal how the natural recession following the post-LIA temperature rise was gradually replaced by the human activities, esp. the accelerating reclamation since 2000. Nine peaks found in a Holocene marine sedimentary record and seven storm -drawn events, esp. found in the late Holocene, indicate strengthened marine influences in the local muddy coast. A good use of these results represents a logic way of un- derstanding the modern muddy coastal process with geological background.