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| Presentation | 2013-12-02 16:10 Velocity Measurement of Internal Waves in the South China Sea by Multi-Temporal and Multi-Sensor Satellite Images Dan-Bee Hong, Chan-Su Yang (UST), Kazuo Ouchi (KIOST)  SANE2013-85 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Oceanic internal waves are generated at the boundary of stratified water layers of different densities associated with salinity and/or temperature. They are often generated by the interaction between the bottom topography and tidal currents. As internal waves propagate the water particles are pushed upward and pulled downward by the stratified boundary, yielding varying surface currents, and these currents move in phase with the internal waves. The varying surface currents produce rough and smooth zones of sea surface, and these differences in surface roughness can be detected by optical imagers and synthetic aperture radars (SARs). In this study, MODIS/Terra and ENVISAT/ASAR were used to obtain sequential images of internal waves in the South China Sea for estimating the propagation properties of internal waves. Most of internal waves in the South China Sea were propagating westward due to strong currents of the Kuroshio. The phase velocities of these internal waves were measured by two methods using; 1) multi-temporal and multi-sensor images acquired in a very short time interval, 2) several packets of internal waves associated with semidiurnal tidal period in a single image. The internal wave velocities estimated by the method 1 ranged from 0.84 m/s to 1.91 m/s depending on the water depth, while those by the method 2 were from 0.37 m/s to 0.59 m/s. It was found that the velocity difference between two methods is up to 1.40 m/s and the phase velocity decreases with decreasing water depth. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Internal waves / Phase velocity / SAR / MODIS / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 335, SANE2013-85, pp. 81-86, Dec. 2013. | |
| Paper # | SANE2013-85 | |
| Date of Issue | 2013-11-25 (SANE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SANE2013-85 |
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| Conference Information | |
| Committee | SANE |
| Conference Date | 2013-12-02 - 2013-12-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | VAST/VNSC(2nd Dec.) & Melia Hotel (3rd Dec), Hanoi, Vietnam |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ICSANE 2013 (International Conference on Space, Aeronautical and Navigational Electronics) |
| Paper Information | |
| Registration To | SANE |
| Conference Code | 2013-12-SANE |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Velocity Measurement of Internal Waves in the South China Sea by Multi-Temporal and Multi-Sensor Satellite Images |
| Sub Title (in English) | |
| Keyword(1) | Internal waves |
| Keyword(2) | Phase velocity |
| Keyword(3) | SAR |
| Keyword(4) | MODIS |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Dan-Bee Hong |
| 1st Author's Affiliation | University of Science and Technology (UST) |
| 2nd Author's Name | Chan-Su Yang |
| 2nd Author's Affiliation | University of Science and Technology (UST) |
| 3rd Author's Name | Kazuo Ouchi |
| 3rd Author's Affiliation | Korea Institute of Ocean Science and Technology (KIOST) |
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| Speaker | Author-1 |
| Date Time | 2013-12-02 16:10:00 |
| Presentation Time | 20 minutes |
| Registration for | SANE |
| Paper # | SANE2013-85 |
| Volume (vol) | vol.113 |
| Number (no) | no.335 |
| Page | pp.81-86 |
| #Pages | 6 |
| Date of Issue | 2013-11-25 (SANE) |
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