从多尺度超高分辨率海面温度图像中对大西洋伊比利亚海岸上升流和加的斯湾暖水外流的新认识

IF 2.7 3区 地球科学 Q1 ENGINEERING, MARINE
José J. Alonso del Rosario, Elizabeth Blázquez Gómez, Juan Manuel Vidal Pérez, Faustino Martín Rey, Esther L. Silva-Ramírez
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引用次数: 0

摘要

ATLAZUL 项目是伊比利亚大西洋沿岸西班牙和葡萄牙 18 个合作伙伴之间的一项 Interreg 活动。其目标之一是开发海洋信息的新方法和数据处理方法,为私人和公共利益相关者提供有用的产品。这项研究基于近两年的多尺度高分辨率海面温度图像,对阿特拉祖尔地区的海面动态提出了新的见解。利用卡尔胡宁-勒夫变换(经验正交函数)和最大熵谱分析等技术,研究了海面温度图像的长期和短期特征。数学形态学和几何测量理论用于计算中轴变换和豪斯多夫维度。结果可归纳如下(i) 根据 KLT/EOF 分析的第二和第三模式,确定了加利西亚-葡萄牙沿岸的拖网上升流区域,这些区域部分受到风的影响;(ii) 根据 KLT/EOF 分析的第二和第三模式,确定了从加的斯湾到加的斯湾的拖网暖水外流区域,这些区域也受到风的影响;(iii) 上升流和暖水外流的表面特征骨架及其分形维数表明空间分布呈混沌模式, (iv) 谐波预测模式应与风力预测相结合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Insight on the Upwelling along the Atlantic Iberian Coasts and Warm Water Outflow in the Gulf of Cadiz from Multiscale Ultrahigh Resolution Sea Surface Temperature Imagery
The ATLAZUL project is an Interreg effort among 18 partners from Spain and Portugal along the Atlantic Iberian coasts. One of its objectives is the development of new methods and data processing for oceanic information to produce useful products for private and public stakeholders. This study proposes a new insight on the sea surface dynamic of the ATLAZUL area based on almost two years of multiscale high resolution sea surface temperature imagery. The use of techniques such as the Karhunen–Loève transform (Empirical Orthogonal Function) and the Maximum Entropy Spectral Analysis were applied to study long- and short-term features in the sea surface temperature imagery. Mathematical Morphology and the Geometrical Theory of Measure are utilized to compute the Medial Axis Transform and the Hausdorff dimension. The results can be summarized as follows: (i) the tow upwelling areas are identified along the Galician–Portugal coast as indicated in the second and third modes of KLT/EOF analysis, and they are partially affected by wind; (ii) the tow warm water outflows from the Bay of Cádiz to the Gulf of Cádiz are identified as the second and third modes of KLT/EOF analysis, which are also influenced by wind; (iii) the skeletons of the surface signature of the upwelling and of the warmer water outflow, along with their fractal dimensions, indicate a chaotic pattern of spatial distribution and (iv) the harmonic prediction model should be combined with the wind prediction.
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来源期刊
Journal of Marine Science and Engineering
Journal of Marine Science and Engineering Engineering-Ocean Engineering
CiteScore
4.40
自引率
20.70%
发文量
1640
审稿时长
18.09 days
期刊介绍: Journal of Marine Science and Engineering (JMSE; ISSN 2077-1312) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to marine science and engineering. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.
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