Research on characteristic parameter distribution and generation period of internal waves in the Andaman Sea with MODIS

Zhang Hao; Meng Junmin; Sun Li’na

doi:10.3969/j.issn.0253-4193.2020.09.012

Volume 42 Issue 9

Nov. 2020

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Zhang Hao，Meng Junmin，Sun Li’na. Research on characteristic parameter distribution and generation period of internal waves in the Andaman Sea with MODIS[J]. Haiyang Xuebao，2020, 42(9)：110–118 doi: 10.3969/j.issn.0253-4193.2020.09.012

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Research on characteristic parameter distribution and generation period of internal waves in the Andaman Sea with MODIS

doi: 10.3969/j.issn.0253-4193.2020.09.012

First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China

Received Date: 2019-08-23
Rev Recd Date: 2019-10-25

Available Online: 2021-04-21

Publish Date: 2020-09-25

Abstract

Abstract

Based on the 634 MODIS images acquired in 2017, a total of 1 793 internal waves information are extracted. The paper analyzes the spatial distribution of internal waves in three typical regions of the Andaman Sea, quantitatively counts the characteristic parameters such as the length of the leading waves and the area of the wave packets. The potential sources of internal waves are discussed by ray tracing method and estimates the generation period of internal waves. The results show that the internal waves in the northern Andaman Sea have a small spatial scale. The average length of the leading waves is about 107 km, the average wave packet area is about 1 860 km², and the propagation direction is mainly eastward and southwestward. The average length of the leading waves in the central Andaman Sea is about 133 km, and the average wave packet area is about 3503 km². More than 70% of the internal waves propagate in the northeast direction. The average length of the leading waves in the northern part of the Sumatra Island is about 131 km, the average wave packet area is about 2 997 km², and the propagation direction of internal waves is mainly eastward, northeastward and southeastward. There are 7 potential internal wave sources in the Andaman Sea. The internal waves generation period is between 11.5 hours and 13 hours, which has obvious characteristics of half-day period.
- MODIS,
- Andaman Sea,
- internal waves,
- characteristic parameter,
- generation period

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References(21)

References

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