| 重力异常分层分离方法改进及应用:以安徽五河地区为例 |
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| 引用本文： | 葛粲,任升莲,李永东,石永红,张金会,李加好,尤淼,李龙明,张妍.重力异常分层分离方法改进及应用:以安徽五河地区为例[J].地球物理学报,2017,60(12):4826-4839. |
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| 作者姓名： | 葛粲 任升莲 李永东 石永红 张金会 李加好 尤淼 李龙明 张妍 |
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| 作者单位： | 1. 合肥工业大学资源与环境工程学院, 合肥 230009;2. 中国地质大学地球物理与空间信息学院, 武汉 430074;3. 安徽省勘查技术院, 合肥 230031 |
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| 基金项目： | 安徽省国土资源科技项目（2015-K-8），国家自然科学基金项目（41504042），大地测量与地球动力学国家重点实验室开放基金（SKLGED2015-4-3-E），合肥工业大学校博士专项科研资助基金（J2014HGBZ0174）联合资助. |
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| 摘 要： | 本文在原有位场分层分离技术的基础上,提出了动态改进型插值切割算子.通过理想模型实验和谱分析,证明了改进算子对异常源产生的重力场有更好的分离效果.使用新方法对安徽省五河地区布格重力异常进行了分离和分析,分离后的浅部地球物理特征与地表地质调查结果的吻合度高,从而验证了改进算子的有效性和准确性.在结合基础地质资料和分离后的地球物理特征的基础上,进一步分析了五河地区构造格架、区域岩浆岩及红层盆地的空间分布和形态特征,并获取了对研究区内郯庐断裂系各条断裂的延伸、形态和相互关系的新认识.
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| 关 键 词： | 插值切割算子 重力场分离 三维重力异常 郯庐断裂带 深部结构 |
| 收稿时间： | 2016-09-27 |
Improvement and application of the layered separation method for gravity anomalies:An example of the Wuhe area,Anhui Province |
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| GE Can,REN Sheng-Lian,LI Yong-Dong,SHI Yong-Hong,ZHANG Jin-Hui,LI Jia-Hao,YOU Miao,LI Long-Ming,ZHANG Yan.Improvement and application of the layered separation method for gravity anomalies:An example of the Wuhe area,Anhui Province[J].Chinese Journal of Geophysics,2017,60(12):4826-4839. |
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| Authors: | GE Can REN Sheng-Lian LI Yong-Dong SHI Yong-Hong ZHANG Jin-Hui LI Jia-Hao YOU Miao LI Long-Ming ZHANG Yan |
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| Institution: | 1. School of Resources and Environmental Engineer, Hefei University of Technology, Hefei 230009, China;2. Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China;3. Institute of Geological Exploration Technology of Anhui Province, Hefei 230031, China |
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| Abstract: | Based on original layered separation technology for potential fields, this paper proposes a dynamic improved interpolating cut operator for deeply layered separation. Model experiments and power spectral analysis have demonstrated that this operator has better separating effect to different abnormal sources than the previous operator. The improved operator has been applied to separation analysis of Bouguer gravity anomalies of the Wuhe area, Anhui Province. A good consistency between the characteristics of the separated geophysical field and the surface geology further indicates the effectiveness and accuracy of the improved operator. Combining geological data and the geophysical characteristics after separation permits to reveal the spatial distribution and morphological characteristics of the tectonic framework, regional magmatic rocks and red beds in the Wuhe area. New insights into the extension, shape and relationship of faults in the Tan-Lu fault system of the study area have been obtained. |
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| Keywords: | Interpolating cut operation Gravity separation Three dimensional gravity anomaly Tanlu fault Deep structure |
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