Ocean wave observation utilizing motion records of seabirds

Ocean wave observation utilizing motion records of seabirds
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利用海鸟运动记录进行海浪观测

DOI:
10.1016/j.pocean.2021.102713
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发表时间:
2021
影响因子:
4.1
通讯作者:
K. Q.
K. Q.
中科院分区:
地球科学1区
文献类型:
--
作者:
Uesaka;L.;Goto;Y.;Yonehara;Y.;Komatsu;K.;Naruoka;M.;Weimerskirch;H.;Sato;K.;Sakamoto;K. Q.

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各种环境海洋因素,如海浪,影响海鸟生态;海浪是重要的,因为大多数飞行的海鸟必须降落在海面上觅食。然而,全球海洋波浪观测网络是时空穷人相比,其他参数,精细尺度的信息,波浪条件是有限的,和波浪条件对海鸟的影响还没有进行定量研究。在这项研究中,开发了一种方法来估计海浪的海鸟漂浮在海面上的精细尺度运动,记录的全球定位系统(单点定位)。根据日本东部海域的条纹剪切水估算的海浪参数与浮标观测结果有很好的一致性,在1.0-2.5 m波高范围内,精度<0.3 m。此外,波高估计条纹剪水和徘徊信天翁在南印度洋显着相关的后抛模型值。鸟基波浪观测方法作为一种现场观测系统,不仅在海鸟生态学研究中有重要价值,而且在海洋学研究中也有重要意义。基于鸟类对波浪的观测结果,进一步研究了信天翁在不同波浪条件下的选择性。轶事研究表明,海鸟更喜欢低波条件下觅食,因为猎物的能见度;然而,流浪信天翁降落在海面随机,即使在非常高的波浪(5-6米),揭示了他们的容忍海洋表面条件。考虑到环境因素对海洋动物的影响,在分析中增加以前被忽视的参数(例如海浪)至关重要。
Various environmental oceanic factors, such as ocean waves, affect seabird ecology; ocean waves are important, as most flying seabirds must land on ocean surfaces for foraging. However, the global ocean wave observation network is spatiotemporally poor compared to other parameters; fine-scale information on wave conditions is limited, and the influence of wave conditions on seabirds has not been quantitatively studied. In this study, a method was developed to estimate ocean waves from the fine-scale motions of seabirds floating on the sea surface, as recorded by a global positioning system (single-point positioning). Ocean wave parameters, estimated from streaked shearwater around the eastern ocean of Japan, strongly corresponded with the observation results of a buoy, with an accuracy of <0.3 m for wave heights of 1.0–2.5 m. Furthermore, wave height estimated from streaked shearwaters and wandering albatrosses around the southern Indian Ocean significantly correlated with hindcast-model values. Bird-based wave observation methods are valuable not only in seabird ecology but also in oceanography as an in-situ observation system. Based on the results of bird-based wave observations, the preferences of wandering albatrosses under various wave conditions were further examined. Anecdotal studies suggest that seabirds prefer low-wave conditions to forage in because of prey visibility; however, wandering albatrosses landed on the sea surface randomly, even on very high waves (5–6 m), revealing their tolerance to ocean surface conditions. Considering the effect of environmental factors on marine animals, increased inclusion of previously ignored parameters in analysis, such as ocean waves, is essential.
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