福建沿海40000年以来的海面变化  

Changes of Sea-level in Fujian Coast During the Past 40000 Years

作　　者：李永飞[1] 徐柳园[2] 许斌[1] LI Yong-fei;XU Bin;XU Liu-yuan(College of Geography & Resources Science, Neijiang normal university, Neijiang,sichuan 641199,china;Shangrao normal university, Shangrao, Jiangxi 334001 , China)

机构地区：[1]内江师范学院地理与资源科学学院,四川内江641199 [2]上饶师范学院,江西上饶334001

出　　处：《内江师范学院学报》2016年第6期46-55,61,共11页Journal of Neijiang Normal University

基　　金：中国地质调查局南京地质调查中心-海峡西岸经济区地质环境调查评价与区划综合研究的子课题(水[2011]01-38-04)

摘　　要：通过分析福建沿海40000年以来85个各类海面标志物的古海面高程，发现40.20kyrBP古海面处于现今海面以下（一25±5)m.末次盛冰期海面大幅度下降，福建沿海为陆相沉积或沉积间断.12kyrBP海面约为一22m,晚冰期以来海面快速上升，6.5kyrBP左右升至现今海面，上升速率为4mm/yr.早全新世海面位于现代海面之下，大约6.5.6.0kyrBP出现第一个高海面，达到+1m左右.6.3kyrBP海面在（0±5)m波动，3kyrBP左右出现第二个高海面，达到+4m左右，此后海面逐渐下降至现今高度.By analyzing relative sea-level of all kinds of 85 indicators in Fujian coast since the past 40 000 years,we have found the ancient sea-level was below modern sea-level,about (-25±5)m in 40~20 kyr BP.Sea level dropped significantly in the LGM,and it was continental deposits or sedimentary interruption in Fujian coast.Sea-level was about-22 m in 12 kyr BP, and sea level rose rapidly to the contemporary sea-level from the late glacial to about 6.5 kyr BP,around 4 mm/yr.It was be-low modern sea level in the Early Holocene,appearing the first higher sea level in about 6.5~6.0 kyr BP,around +1 m.Sea level fluctuated between (0±5)m in 6~3 kyr BP,the second higher sea level appearing around 3 kyr BP,about +4 m,and from then on decreased gradually to the current sea level.

关 键 词：福建沿海 海面变化 潮位校正 沉积压实 构造升降 

分 类 号：P736[天文地球—海洋地质]