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首页> 外文期刊>測地学会誌 >海底重力計の改造と沿岸域における海底重力測定-陸海域シームレス精密重力調査に向けて-
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海底重力計の改造と沿岸域における海底重力測定-陸海域シームレス精密重力調査に向けて-

机译：沿海地区海底重力仪的改进和海底重力的测量-走向陆海域无缝精密重力测量-

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摘要

An ocean bottom gravimeter was developed in 1996 for gravimetry on the deep seafloor. Althoughthe control and logging units were originally installed in a pressure housing separated from thesensor unit, a few sea trials suggested unifying the system. Then the space for the sensor unitwas enlarged with an additional cylinder, and all the units were installed in the single pressurehousing. Seafloor gravimetry was carried out with the remodeled gravimeter on the shallow bottomoff Shimokita Peninsula, Aomori Prefecture, in order to investigate the distribution of the intrusiverock that has not been exposed to surface. Detailed and seamless gravimetry was performed in thecoastal area combined with the observation on land. As a result, the horizontal extension of theintrusive rock that has not been exposed to surface was confirmed based on gravity mapping with aprecision of 0.05 mgal, and the effectiveness of the seamless gravity investigation became clear.
机译：1996年开发了一种海底重力仪，用于在深海底进行重量分析。尽管控制和测井单元最初安装在与传感器单元分离的压力外壳中，但一些海上试验建议统一该系统。然后用一个额外的圆柱体扩大传感器单元的空间，并将所有单元安装在单个压力外壳中。为了研究未暴露于地表的侵入岩的分布，在青森县下北田浅谷半岛上用改型的重力计进行了海底重量分析。结合沿海地区的观测，在沿海地区进行了详细而无缝的重量分析。结果，基于重力映射以0.05mgal的精度确认了未暴露于表面的侵入性岩石的水平延伸，并且无缝重力研究的有效性变得清楚。

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