中国东部全新世以来海面波动特征探讨

对全新世以来中国东部海面变化的资料数据进行全面搜集,其中包括12条原始曲线和 600多个标志物点的多项信息,通过建立数据库、统计分析等多种方法与手段的运用,拟对全新世以来中国东部海面变化小尺度波动进行对比研究,并得出全新世以来中国东部海面波动的一系列特征。初步建立起中国东部全新世以来海面随时间变化的波动序列,即：大致以 6500aBP为界, 6500aBP之前海面在波动中快速上升;6500aBP之后海面波动频繁,变化幅度减弱,但其变化的总趋势呈现出在波动中微微上升的特点。中国东部全新世以来海面变化从总体上来讲共经历了 9个周期的波动变化。

CHARACTERISTICS OF SEA-LEVEL FLUCTUATIONS SINCE HOLOCENE IN THE REGIONS OF EASTERN CHINA

Sea-level changes have now become one of the hot issues in the current research of international global changes. And it has close relationships with human activities, including living, manufacturing and economic growth. Therefore the problem of sea-level changes, especially sea-level fluctuating during the Holocene is being always attached high importance by the academic circles and all governments. Some experts and investigators have done quite a few researches on the sea-level changes in China for a long time, adopting many means of age menstruating and biometrics, employing a lot of new techniques, and establishing the curves patterns of sea-level changes in the territorial regions or countrywide. They generally suggested that there are many fluctuations in sea-level changes since Holocene in the eastern China, but the general trend is unanimous on the whole. But among the fluctuations, the little ones are quite confusing and controversial. People have not come to an agreement on the frequencies, amounts, times and extents of these little fluctuations, and also some discrepancies still exist in many related problems.
　　To make further study about the sea-level changes trend in the study region aiming to reach a possible agreement, a large amount of data about sea-level changes in the regions of eastern China since Holocene including 12 original sea-level change curves and more than 600 sea-level indicators are collected. Then resettle these original data follow some methods like doing some statistic and digital calculation on a scale of 250 years during the past 10 ka. Rearrangement and systematic statistic analyses are made on the recollected data by Origin software. And comparison study is made on little-scale sea-level fluctuations in the regions of eastern China through building of databank, obtaining a series of fresh characteristics of sea-level fluctuations since Holocene in the regions of eastern China. In so doing, synthetic sea-level curves and temporal sequence with time since Holocene in the regions of eastern China is successfully constructed. 
　　Study results suggest that sea-level takes on the characteristics of persisting rise and fluctuating that is: 6 500 a BP, serves as demarcation of two fluctuation sequences. Sea-level rises quickly before 6 500 a BP, after 6 500 a BP, however, sea-level fluctuates frequently accompanying with small fluctuation ranges, but the general trend is characterized by slight rise in fluctuation. General speaking, sea-level changes in regions of eastern China since Holocene underwent 9 periods of sea-level fluctuations.