福建沿海全新世海平面变化

本文通过对严格筛选的61个海平面标志物进行研究,建立了福建沿海3个岸段的全新世海平面曲线。结果表明,在全新世海进过程中,海平面有过多次波动并且在6100,3100和1800a,B.P.前左右形成3次海平面高峰,但其高度分别不超过+3m,+2m和+1m;3个岸段海平面波动总趋势一致,但海平面的高度和变动幅度存在差异:闽东北沿海6100a,B.P.前左右的高海面比3100a,B.P.前左右的为高,闽中沿海则相反,其6100a,B.P.前左右的高海面比3100a,B.P.前的为低。

Sea level variation along Fujian Coast in Holocene

Abundant sea level indicators and radiocarbon age dating along the coast of Fujian provide a basis for study of sea level changes during the Holocene. By strictly selecting the data, correcting tidal range and calculating sedimentary compaction, the Holocene relative sea level curves of three coastal regions of Fujian have been set up.The sea level curves show that under the Holocene transgression sea level experienced many osillations and formed three evident higher (than present) sea levels which occurred in about 6100, 3100,and 1800a,B. P. ago with the altitude less than + 3m, +2m and +1m respectively.The sea level curves demonstrate that the general trend of sea level fluctuations of three coastal regions of Fujian has been consistent, but there were differences in height and range of sea level variations, such as the high sea level stands which took place in about 6100a,B. P. ago in the coastal regions of northeastern Fujian and southern Fujian were higher than those in about 3 100a,B. P.; on the contrary, in the middle coastal region of Fujian sea level in about 6100a,B. P. ago was lower than in about 3100a,B.P. ago.The research results in this paper could provide a new train of thought for the contention about the Holocene sea leves variation in Fujian coast.