通过潟湖沉积物重建南海北部过去 700 年的降水变化

IF 2.6 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Marine Geology Pub Date : 2024-07-26 DOI:10.1016/j.margeo.2024.107364

Tiantai Sun , Wenqing Yang , Huaineng Tang , Yikang Huang , Hongwei Liu , Liang Zhou , Yang Yang , Qibin Xu , Yuesong Gao , Zhouqing Xie

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引用次数: 0

摘要

东亚地区的降水变化与该地区的季风气候和西热带太平洋的热液过程密切相关。然而，重建的过去千年降水记录趋势并不一致，影响因素也存在争议。在此，我们利用潟湖沉积物的粒度重建了南海北部 700 年的降水记录。我们的数据显示，降水量在小冰河时期早期到中期有所增加，可能受到热带气旋和沃克环流的影响。东亚夏季季候风和太平洋十年涛动对南中国海北部的降水变化有主要影响。这项研究为了解南中国海气候变化的过程和内在机制提供了新的视角。

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Precipitation variation in the northern South China Sea of the last 700 years reconstructed by lagoon sediments

Precipitation changes in the East Asia are closely linked to the monsoonal climate in this region and the hydrothermal processes in the western tropical Pacific. However, trends of reconstructed precipitation records for the past millennium are inconsistent and the influencing factors are in dispute. Here we reconstruct a 700-year precipitation record for the northern South China Sea (SCS) using grain size of lagoon sediments. Our data revealed that precipitation increased in the early to middle Little Ice Age, possibly modulated by tropical cyclones and the Walker Circulation. The East Asian Summer Monsoon and Pacific Decadal Oscillation had the major influence on the precipitation changes in the northern SCS. This study provides new insight into the processes and the underlying mechanisms of climate changes in the SCS.

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来源期刊

Marine Geology 地学-地球科学综合

CiteScore

6.10

自引率

6.90%

发文量

175

审稿时长

21.9 weeks

期刊介绍： Marine Geology is the premier international journal on marine geological processes in the broadest sense. We seek papers that are comprehensive, interdisciplinary and synthetic that will be lasting contributions to the field. Although most papers are based on regional studies, they must demonstrate new findings of international significance. We accept papers on subjects as diverse as seafloor hydrothermal systems, beach dynamics, early diagenesis, microbiological studies in sediments, palaeoclimate studies and geophysical studies of the seabed. We encourage papers that address emerging new fields, for example the influence of anthropogenic processes on coastal/marine geology and coastal/marine geoarchaeology. We insist that the papers are concerned with the marine realm and that they deal with geology: with rocks, sediments, and physical and chemical processes affecting them. Papers should address scientific hypotheses: highly descriptive data compilations or papers that deal only with marine management and risk assessment should be submitted to other journals. Papers on laboratory or modelling studies must demonstrate direct relevance to marine processes or deposits. The primary criteria for acceptance of papers is that the science is of high quality, novel, significant, and of broad international interest.