| 改进的重力模拟退火反演研究 |
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| 引用本文： | 陈华根,吴健生,王家林.改进的重力模拟退火反演研究[J].吉林大学学报(地球科学版),2002,32(3):294-298,303. |
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| 作者姓名： | 陈华根 吴健生 王家林 |
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| 作者单位： | 同济大学,教育部海洋地质重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金;49894190; |
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| 摘 要： | 通过对模拟退火方法中常用的VFSA算法的分析，针对其在模型扰动及退火计划上存在的缺陷，针对性地作了更合理的改进VFSA算法，提高了VFSA算法的计算速度与稳健性，并结合重力反演过程中对模型的修正，克服了常规重力反演方法所存在的等值效应。研究中还把重力正演计算的单元体改为垂直侧边梯形单元，并合单同一层位的垂直侧边梯形单元成为一大单元再作计算，加快了正反演计算速度并提高了正反演精度。通过模型试验及实际资料的处理，验证了作者所提出的改进的模拟退火重力反演方法的有效性。
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| 关 键 词： | 重力反演 模拟退火 等值效应 VFSA算法 地球物理勘探 |
| 文章编号： | 1671-5888(2002)03-0294-05 |
RESEARCH IN MODIFIED SIMULATED-ANNEALING GRAVITY INVERSION |
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| CHEN Hua gen,WU Jian sheng,WANG Jia lin.RESEARCH IN MODIFIED SIMULATED-ANNEALING GRAVITY INVERSION[J].Journal of Jilin Unviersity:Earth Science Edition,2002,32(3):294-298,303. |
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| Authors: | CHEN Hua gen WU Jian sheng WANG Jia lin |
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| Abstract: | Base on analysis of the drawback probably existed in VFSA(vary fast simulated annealing) algorithm, a modified one(MVFSA) is put forward. With model modification during gravity inversion iteration, the new one not only overcomes the gravity equivalence effect, but also improves the precision and the efficiency. The echelon unit with two vertical sides is given and the units in same layer are combined to a big unit in gravity forward calculation, so the precision and velocity for forward calculation are improved much more.The result of model test and field data procession, shows that the modified simulated annealing gravity inversion is effective. |
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| Keywords: | gravity inversion simulated annealing model disturbance equivalence effect |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
