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| 題名: | Airborne lidar measurements of wave energy dissipation in a coral reef lagoon system |
| 作者: | 黃志誠;Huang, Zhi-Cheng;Reineman, Benjamin D.;Lenain, Luc;Melville, W. Kendall;Middleton, Jason H. |
| 貢獻者: | 地球科學學院水文與海洋科學研究所 |
| 關鍵詞: | coral reef;Coral reefs;Earth sciences;Earth, ocean, space;Energy dissipation;Exact sciences and technology;Geophysics;In situ measurement;Kinetic energy;Lagoons;Lidar;Marine;Nutrient uptake;Physical oceanography;Scientific apparatus & instruments;Water column;wave breaking;wave dissipation;Wave energy |
| 日期: | 2012-01-01 |
| 上傳時間: | 2026-04-23 11:07:34 (UTC+8) |
| 出版者: | Wiley-Blackwell;Washington, DC: Blackwell Publishing Ltd |
| 摘要: | 摘要： Quantification of the turbulent kinetic energy dissipation rate in the water column, ε, is very important for assessing nutrient uptake rates of corals and therefore the health of coral reef lagoon systems. However, the availability of such data is limited. Recently, at Lady Elliot Island (LEI), Australia, we showed that there was a strong correlation between in situ measurements of surface‐wave energy dissipation and ε. Previously, Reineman et al. (2009), we showed that a small airborne scanning lidar system could measure the surface wavefield remotely. Here we present measurements demonstrating the use of the same airborne lidar to remotely measure surface wave energy fluxes and dissipation and thereby estimate ε in the LEI reef‐lagoon system. The wave energy flux and wave dissipation rate across the fore reef and into the lagoon are determined from the airborne measurements of the wavefield. Using these techniques, observed spatial profiles of energy flux and wave energy dissipation rates over the LEI reef‐lagoon system are presented. The results show that the high lidar backscatter intensity and point density coming from the high reflectivity of the foam from depth‐limited breaking waves coincides with the high wave‐energy dissipation rates. Good correlations between the airborne measurements and in situ observations demonstrate that it is feasible to apply airborne lidar systems for large‐scale, long‐term studies in monitoring important physical processes in coral reef environments. When added to other airborne techniques, the opportunities for efficient monitoring of large reef systems may be expanded significantly. Key Points Wave energy flux measured by airborne lidar Flux gradients give wave energy dissipation Wave energy dissipation may infer turbulent dissipation
其他題名： J. Geophys. Res
出版者： Washington, DC: Blackwell Publishing Ltd
出版日期： 2012-03
出處： Journal of Geophysical Research: Oceans, 2012-03, Vol.117 (C3), p.n/a
資源來源： Wiley Online Library - AutoHoldings Journals
版權： Copyright 2012 by the American Geophysical Union
版權： 2015 INIST-CNRS
識別號： ISSN: 0148-0227
識別號： ISSN: 2169-9275
識別號： EISSN: 2156-2202
識別號： EISSN: 2169-9291
識別號： DOI: 10.1029/2011JC007203 |
| 顯示於類別: | [水文與海洋科學研究所] 期刊論文
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