| 耗散大气中风场对内重力波传播的影响 |
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| 引用本文： | 丁锋,万卫星,袁洪.耗散大气中风场对内重力波传播的影响[J].空间科学学报,2000,20(2):129-135. |
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| 作者姓名： | 丁锋 万卫星 袁洪 |
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| 作者单位： | 中国科学院武汉物理与数学研究所 430071 |
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| 基金项目： | 国家自然科学基金(49604061),国家杰出青年基金(49525407)资助的课题 |
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| 摘 要： | 使用考虑大气耗散的射线跟踪算法，计算了风场作用下策略波的传播情况。结果表明，风场对快速重力波分量影响较小，但对反射和传播区域的慢速波的影响较大，表现在顺风时使反射区范围缩小，逆风时使反射区范围扩大。在传播区，顺风场使慢速重力波分量的传播距离明显增大，传播高度上升。分析表明，重力波传播的丰富多样性是由风场对波的衰减和反射等滤波作用引起的。
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| 关 键 词： | 射线跟踪 重力波衰减 背景风场 大气重力波传播 |
| 修稿时间： | 1999年11月8日 |
THE INFLUENCE OF BACKGROUND WINDS ON INTERNAL GRAVITY WAVES IN DISSIPATIVEATMOSPHERE |
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| DING Feng,WAN Weixing,YUAN Hong.THE INFLUENCE OF BACKGROUND WINDS ON INTERNAL GRAVITY WAVES IN DISSIPATIVEATMOSPHERE[J].Chinese Journal of Space Science,2000,20(2):129-135. |
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| Authors: | DING Feng WAN Weixing YUAN Hong |
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| Abstract: | By using ray-tracing method, features of propagation of internal gravity wavesunder the influence of winds are calculated- The results indicate that the cut-offregion of gravity waves seems not affected by winds, while reflecting and propagat-ing regions are significantly innuenced. The reflecting region reduces when gravitywaves propagate downwind and expands when against wind. In propagating region,propitions winds shorten the attenuation distance of slow gravity waves and reducetheir propagating height, while converse winds lengthen the attenuation distance ofslow gravity waves and rise the attenuation height. Further analysis shows that thediversity of gravity wave propagation features is caused by the effect of winds onthe processes of gravity wave attenuation and reflection. |
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| Keywords: | Ray tracing gravity wave dissipation |
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