| 南海中部海盆海山磁性反演及初步解析 |
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| 引用本文： | 金钟.南海中部海盆海山磁性反演及初步解析[J].海洋学报,2003,25(2):57-66. |
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| 作者姓名： | 金钟 |
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| 作者单位： | 南京大学, 海岸与海岛开发教育部重点实验室, 江苏, 南京, 210093;国家海洋局海底科学重点实验室, 浙江, 杭州, 310012 |
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| 基金项目： | 国家自然科学基金(49176261)，南京大学海岸与海岛开发教育部重点实验室资助项目(SCIEL21101103) |
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| 摘 要： | 南海中部海盆分布着众多海山,从实测磁异常反演海山磁性是南海海盆古地磁研究新的重要课题,它有助于解决南海海盆的运动方向和运动形式等问题.对南海海盆16座海山作磁性反演取得了较高的计算精度.对南海中部海盆海山磁性反演表明,海山均为非均匀磁化体,海山形成经过多期火山喷溢叠加.海山磁性差异清晰地显示了海盆分区特征.南海海盆分东部海盆区和西南部海盐区,海盆地壳运动规律差异较大:东部海盆以逆时针旋转由南往北运移;西南海盆先经历了顺时针旋转,后改为逆时针旋转,由北往南运移.
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| 关 键 词： | 南海 中部海盆 海山 磁性反演 |
| 文章编号： | 0253-4193(2003)02-0057-10 |
| 收稿时间： | 2001/10/10 0:00:00 |
| 修稿时间： | 2001年10月10 |
Inversion magnetic anomalies of seamounts and preliminary analysis in the central basins of the South China Sea |
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| JIN Zhong.Inversion magnetic anomalies of seamounts and preliminary analysis in the central basins of the South China Sea[J].Acta Oceanologica Sinica (in Chinese),2003,25(2):57-66. |
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| Authors: | JIN Zhong |
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| Abstract: | There are lots of seamounts in the central basins of the South China Sea. It is still a new and important project in the research on paleo-geomagnetism in the basin to inversion magnetic anomalies of seamount from the measured data on seamount magnetic anomaly, which is helpful to explain the direction of motion and the modes of transformation of the basin of the South China Sea. The magnetic anomalies of 16 seamounts are inversed and a high precision is got. The results show that these seamounts are heterogeneously magnetized and the seamounts were come into being by beaping rocks during the volcanic activities. Magnetization of these seamounts is different, it im plies the feature of the different subarea in the basin of sea. The sea basins are divided into the eastern basin and I he southwestern basin. There is very exact and different law of motion. The eastern basin is migrating from south to north by way of anticlockwise revolution and the other is migrating from north to south by way of clockwise revolution at first and anticlockwise revolution thereafter. |
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| Keywords: | South China Sea the central sea basin seamount inversion magnetic anomaly |
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