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您的检索式：作者名="Mrinal K. Sen"
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| 1 | 平面波域反数据处理压制多次波方法研究显示文摘在地震勘探领域,尤其是海洋地震勘探中,多次波一直是影响地震处理与解释的主要因素之一.本文基于x-t 域的反馈模型及多次波衰减的理论,详尽推导了 x-t 域反数据处理的方法;基于平面波域多次波的产生机制,借鉴 x-t 域反数据处理的方法,推导出在平面波域进行反数据处理的原理.文中给出一个有限差分的模拟数据进行测试.处理结果表明,本方法可以有效地衰减表层相关多次波,提高地震数据分析的精确性,在保护了一次波能量的同时,可以更加有效快捷地去除多次波. | 马继涛 Mrinal K. Sen 陈小宏 | 2009 | 地球物理学报2009，52，3： | 21 |
| 2 | Numerical modeling of wave equation by a truncated high-order finite-difference method显示文摘Finite-difference methods with high-order accuracy have been utilized to improve the precision of numerical solution for partial differential equations.However, the computation cost generally increases linearly with increased order of accuracy.Upon examination of the finite-difference formulas for the first-order and second-order derivatives, and the staggered finite-difference formulas for the first-order derivative, we examine the variation of finite-difference coefficients with accuracy order and note that there exist some very small coefficients.With the order increasing, the number of these small coefficients increases, however, the values decrease sharply.An error analysis demonstrates that omitting these small coefficients not only maintain approximately the same level of accuracy of finite difference but also reduce computational cost significantly.Moreover, it is easier to truncate for the high-order finite-difference formulas than for the pseudospectral formulas.Thus this study proposes a truncated high-order finite-difference method, and then demonstrates the efficiency and applicability of the method with some numerical examples. | Yang Liu Mrinal K. Sen | 2009 | Earthquake Science2009，22，2： | 4 |
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