Study on the amplitude inversion of internal waves at Wenchang area of the South China Sea

ZHANG Xudong; WANG Jing; SUN Lina; MENG Junmin

doi:10.1007/s13131-016-0902-1

南海文昌地区内波振幅反演研究

doi: 10.1007/s13131-016-0902-1

1.
中国海洋大学, 信息科学与工程学院, 青岛, 266100
2.
国家海洋局第一海洋研究所, 青岛, 266061

基金项目: The National Natural Science Foundation of China under contract Nos 61171161 and 61471136; the National High Technology Research and Development Program (863 Program) of China under contract No. 2013AA09A502.

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出版历程
- 收稿日期: 2015-08-04
- 修回日期: 2016-01-22

Study on the amplitude inversion of internal waves at Wenchang area of the South China Sea

1.
College of Information and Engineering, Ocean University of China, Qingdao 266100, China
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

摘要

摘要: 2005年4月16到7月20在海南岛的文昌海域（112°E，19°35’N）进行了内波实测实验，根据温度链数据几乎每天都可以探测到内波出现。从同期的遥感图像也对内波进行了观测，2005年6月19号的SAR图像中探测到了活跃的内波波包，实验期间从多景MODIS图像上也探测到内波出现在实测点附近。根据内波遥感成像机理，结合非线性薛定谔模型获得了内波振幅反演的新方法。在不同频散和非线性条件下，得到了遥感影像中亮暗条纹灰度峰谷间距和内波特征波长的两种关系。文中分别采用了非线性薛定谔模型和KdV模型对内波的振幅进行反演，反演结果表明非线性薛定谔模型的反演结果与内波的实测结果比较接近，这说明非线性薛定谔模型适用于文昌海域的内波振幅反演研究。
- 内波 /
- 振幅反演 /
- 非线性薛定谔模型 /
- 遥感图像 /
- 文昌海域
Abstract: The field experiment is conducted from April 16, 2005 to July 20, 2005 at Wenchang area east of Hainan Island (19°35'N, 112°E) of China. Internal wave packets are observed frequently with thermistor chains during the experiment. Meanwhile, internal waves are also detected from a synthetic aperture radar (SAR) image on June 19, 2005 and several other moderate-resolution imaging spectroradiometer (MODIS) images near a mooring position. The distance between the positive and negative peaks induced by the internal wave can be obtained from satellite images. Combined with remote sensing images and in situ data, a new method to inverse the amplitude of the internal wave is proposed based on a corrected nonlinear Schrödinger (NLS) equation. Two relationships are given between the peak-to-peak distance and the characteristic wavelength of the internal wave for different nonlinear and dispersion coefficients. Based on the satellite images, the amplitude inversion of the internal waves are carried out with the NLS equation as well as the KdV equation. The calculated amplitudes of the NLS equation are close to the observation amplitude which promise the NLS equation a reliable method.
- internal wave /
- amplitude inversion /
- nonlinear Schrödinger equation /
- remote sensing image /
- Wenchang area

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参考文献(19)

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文章访问数: 3344
HTML全文浏览量: 70
PDF下载量: 615
被引次数: 0

南海文昌地区内波振幅反演研究

doi: 10.1007/s13131-016-0902-1

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Study on the amplitude inversion of internal waves at Wenchang area of the South China Sea

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