| 东沙群岛海域的折射地震探测 |
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| 引用本文： | 阎贫,刘昭蜀.东沙群岛海域的折射地震探测[J].海洋地质与第四纪地质,1996,16(4):19-24. |
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| 作者姓名： | 阎贫 刘昭蜀 |
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| 作者单位： | 中国科学院南海海洋研究所 |
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| 摘 要： | 综合近十多年以来在东沙群岛海域进行的反射地震资料，声纳浮标资料，双船扩长排列剖面地震测量资料及海底地震仪的折射地震资料，绘制了东沙群岛海域关于沉积层基底与地壳结构的地震地质剖面，揭示了陆架，陆坡至中央海盆之间的地壳从陆壳向洋壳的变化中，过渡睦壳具有断块构造及被拉薄的特点。
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| 关 键 词： | 东沙群岛 海域 油气勘探 地壳结构 折射地震探测 |
REFRACTIVE SEISMIC SURVEY IN DONGSHA ISLANDS REGION |
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| Yan Pin Liu Zhaoshu Jiang Shaoren.REFRACTIVE SEISMIC SURVEY IN DONGSHA ISLANDS REGION[J].Marine Geology & Quaternary Geology,1996,16(4):19-24. |
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| Authors: | Yan Pin Liu Zhaoshu Jiang Shaoren |
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| Abstract: | Based on reflective seismic data,sonobuoy survey,expanded spreading pronfile(ESP)survey and ocean-bottom seismometer survey(OBS)carried out in Dongsha Islands re-gion in the past ten years,seismic geologic profiles of sedimentary basement and crustalstructure are worked out.These profiles show the change of crust from continental typein the shelf to oceanic type in the central basin, and show the faulted block and thinnedcrust structure of the transitional area in the continental slope. |
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| Keywords: | sonobuoy survey crustal structure faulted block structure |
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